
Smartling
5 months ago
engineermachine learningpythonremote europe
Smartling is hiring a remote Machine Learning Engineer. This is a full-time position that can be done remotely anywhere in Europe.
Smartling - Translation management platform to localize your content across devices and platforms.

defiengineerethereumevmfull-time
Aragon is a team of 24 people that spans a broad range of backgrounds, interests, and geographies. We’re entrepreneurs, technologists and skeptics, troublemakers and problem solvers, who are building unstoppable tooling for the creation and management of Onchain Organizations. Our mission is to enable any organization to experiment with governance at the speed of software and we envision a world where humans can coordinate by the rule of code, reducing the need for enforcement by trusted systems, often through the use of violence.
Aragon launched the first DAO framework in 2017, securing over $40 billion in assets for the likes of Lido and Curve. We are currently building Aragon OSx & App, a new and improved tech-stack supporting projects such as Polygon and Taiko.
As a Smart Contract Developer at Aragon, you will be joining the solutions team, where you’ll be directly involved in designing and building custom integrations for clients on top of the Aragon OSx protocol.
💪 What do we expect from the Smart Contract Developer?
- Transform client needs into technical designs and production-ready code, always considering the user.
- Lead projects from inception to live maintenance, emphasizing secure and high-quality delivery at every phase.
- Exhibit deep expertise in Solidity, having not just deployed smart contracts but designed intricate contract architectures addressing real-world business challenges.
- Have an understanding of Decentralized Finance (DeFi) and the workings of major DeFi protocols. Foster enthusiastic collaboration with other product and engineering squads, further deepening everyone’s knowledge of the ever-expanding technologies of web3.
- Engage in daily stand-ups, knowing when your expertise is critical, and step up to proactively solve your teammate’s challenges.
- Build solutions with a strong grasp of software architecture best practices and common standards across the Ethereum ecosystem and in the Decentralized Finance space.
⚠️ Minimum requisites
- 3+ years delivering software to real users, ideally in a fast-paced startup environment
- Expert-level Solidity experience, including the design and optimization of advanced smart contract systems
- Strong foundation in smart contract security, with a history of successful audits and knowledge of common vulnerabilities
- Strong working proficiency in foundry and hardhat
- Familiarity with or contributions to Ethereum EIPs
- Significant technical contributions to DeFi protocols with at least 8 figures in TVL
- Fluency in typescript, and popular libraries such as Ethers (v5, v6) and viem.
- Experience working across multiple EVM networks - sidechains, OP rollups and Zk rollups
- Proven contributions to open-source projects within blockchain, cryptography, decentralized systems, or the broader web3 ecosystem
- Understanding of how to work in an agile environment, using git, and tools like Linear and Github
- Passionate about the possibilities of decentralized autonomous organizations and the impacts they may have on how humans work together to solve problems
- Excellent English and technical communication - both written and oral
- You are able to attend quarterly offsites - usually located in or around Europe - to work in person with your team
💡 Bonus skills
- Experience or certification in formal verification of smart contracts
- Knowledge or hands on experience working with other parts of our stack, like NextJS, Turborepo, Envio, IPFS
- Interest in the use of LLMs to enhance developer productivity
- Working knowledge of advanced security tools such as HEVM, Slither, Echidna, foundry Invariant tests.
- Demonstrated experience using Vyper, Go or Rust
- Proven mentoring skills, fostering a culture of growth and learning within teams
- Power user of DeFi and/or Web3 applications
We value freedom and responsibility among our contributors. In practice, this means that we’re a remotely distributed organization that’s flexible but pragmatic. The team gets together for quarterly in-person offsites where we strengthen our alignment, drive projects forward, and have fun in different locations across Europe. We will trust you to accommodate and support your team, and communicate if you ever feel stretched thin. You will get all of the resources needed to be effective, whether it’s for setting up your remote work environment or a personal development budget. You will be a part-owner of Aragon X and you are expected to work with this mentality.
This role reports to Aragon X, a Swiss AG dedicated to advancing the Aragon Project. We are an Equal Opportunity Employer supporting a community of DAO creators, developers, and users experimenting with new forms of social coordination and governance.

engineerfull-timegolangremoterust
About the role:
Injective is seeking a Security Engineer to help strengthen and future-proof the security of our blockchain ecosystem and core infrastructure. This role blends hands-on security engineering with proactive research — you’ll identify and mitigate vulnerabilities, run offensive security campaigns, and help shape Injective’s reputation as one of the most secure ecosystems in Web3.
Responsibilities:
- Perform regular security reviews, penetration tests, and code audits across our chain modules, smart contracts, validator infrastructure, and supporting services.
- Hunt for new vulnerabilities through fuzzing, adversarial testing, and exploit development — at the protocol, network, and application layers.
- Develop internal tools to detect misconfigurations, suspicious activity, and chain-level edge-case exploits.
- Analyze emerging threats in other blockchains, rollups, bridges, or validator networks — assess Injective’s exposure, propose mitigations, and publish findings internally.
- Manage vulnerability scanning pipelines, patch management, and incident response processes.
- Audit internal systems and services (cloud accounts, access control, VPN, GitHub, secrets, endpoints, MDM, etc.) for best practice alignment
- Collaborate with core developers, validators, and external auditors to test, validate, and deploy security fixes.
- Contribute to our bug bounty program and coordinate with the security research community for responsible disclosure.
- Help define and enforce internal security policies, tooling, and education to raise baseline awareness
Who You Are
- 5+ years of experience in security engineering, offensive security, or protocol-level system audits
- Strong experience in security engineering for cloud-native or blockchain-based systems.
- Solid understanding of offensive security: vulnerability discovery, fuzzing, static/dynamic analysis.
- Strong pen-testing experience
- Experience working with or auditing blockchain protocols, validator setups, or smart contracts
- Hands-on experience securing distributed infrastructure (Linux, containers, Kubernetes, cloud networks).
- Familiarity with blockchain architectures (Cosmos SDK, Tendermint, IBC, EVM, CosmWasm, or cross-chain bridges).
- Proficiency in Go or Rust (protocols) is a must.
- Experience with Solidity/CosmWasm (smart contracts) is a plus
- Comfortable writing PoCs, threat models, or simple fuzzers to validate real-world risk.
- Self-driven, curious, and motivated to think like an attacker and design like a defender.
Bonus Points:
- Experience with Cosmos SDK, IBC, or Injective chain tooling
- Involvement in open-source security research, bug bounties, or CTFs
Why Work With Us:
- Work on high-impact security challenges at the forefront of decentralized finance
- Collaborate with a global team of protocol engineers, devops engineers, and Web3 pioneers
- Competitive compensation, generous token incentives, and flexible remote work
We need a Senior Backend Engineer with a strong focus on Go who can architect scalable systems, ship production-ready code, and own the entire deployment pipeline — from local development to cloud infrastructure.
What You'll Do
Design and implement high-performance backend services in Go
Build and maintain cloud infrastructure across AWS, GCP, and Azure
Own the DevOps pipeline — from CI/CD to monitoring and alerting
Lead our SOC 2 compliance efforts, implementing security best practices
Create robust APIs that power our AI-driven supply chain platform
Optimize for performance, reliability, and cost across cloud providers
Automate infrastructure provisioning and deployment processes
Collaborate with frontend engineers to design efficient data flows
Make architectural decisions that balance speed of delivery with long-term maintainability
You Should Have
5-10 years of backend development experience
Strong Go programming skills (minimum 2+ years preferred)
Proven experience with AWS, GCP, and Azure — not just one cloud provider
Deep understanding of cloud-native architectures and microservices
Hands-on DevOps experience (Docker, Kubernetes, Pulumi, etc.)
Security-first mindset with understanding of compliance frameworks
Self-driven approach with ability to own projects end-to-end
Experience shipping production systems that scale
Bonus Points
SOC 2 compliance experience — you've been through the audit process
Built AI/ML infrastructure or data pipelines at scale
Experience with multi-cloud deployments and cost optimization
Track record of improving developer velocity through tooling and automation
Background in supply chain, logistics, or enterprise software
Why Join Us?
You'll have direct impact — this isn't a cog-in-the-machine role
Own the entire backend architecture and infrastructure decisions
Work with a lean team where your decisions shape the product and culture
Build fast, experiment often, and learn from real users
High ownership with the flexibility to work where and when you're most productive
Join early, grow with the company, and help define engineering excellence
To Apply
Tell us about a backend system you built that balanced rapid development with production reliability. We'd love to hear about a time you improved deployment speed, reduced cloud costs, or implemented security controls without slowing down the team. Bonus if you can share architecture diagrams or performance metrics.
Empower the voices of the world @ Zencastr. If you want to push the world of podcasting into the future, come join a team who loves to live on the edge! We are a fully distributed team of smart people who are passionate about changing the world one voice at a time.
You should join us if you:
Have significant experience with Node.js and good knowledge of JS fundamentals
Have a good understanding of computer science fundamentals. You might not have gone to school for it, but you know the difference between heap and stack, different time complexities, and which patterns to use and when.
You are ambitious. You might want to build your own company one day or have tried to tackle the toughest tech problems just for fun.
You enjoy writing Javascript or Typescript
You have an eye for performance. Whether thinking about the latest client side bundling techniques, or the proper way to shard a mongo database, you want things to be fast.
You are a team player
You have good communication skills
What sets you apart:
You have a passion for high performance applications
You have significant open source contributions
You want to work in a fast growing startup. Which comes with the blood, sweat and tears of working to disrupt an established industry
You have empathy for the end user. A spec is a conversation starter, as an advocate for the end user you always are thinking about how to best serve their needs
You have an eye for code quality and you strive to uphold best practices in engineering, security, and design
Why you should choose us:
You’ll be working with world class engineers, Phd’s, and designers in a fully distributed team
Work in an agile and fast changing environment
Equity commensurate to your contribution in a profitable company
Health insurance
Unique challenges and the support and talent to solve them
4 weeks PTO
Freedom to work where you please
What we’re looking for:
5+ years of Typescript, Node.js development
Strong document / key-value store knowledge (Redis, MongoDB)
Strong SQL knowledge
Demonstrable knowledge of building scaleable consumer based apps
Strong experience with unit, integration, and load testing
Experience building APIs
Experience with cloud APIs (Google Cloud, Digital Ocean)
Bonus points if you have:
Experiencing working in high traffic, low latency applications
Good dev ops experience
Digital Signal Processing experience
Strong SQL knowledge
AI experience
How to apply:
Apply at https://jobs.ashbyhq.com/zencastr/e5897c7a-4622-495b-a892-81763a2ef112
We are flexible! For the right candidate we ask: What do you need to do your best work?
The Role:
We are looking for a Senior Python Developer for one of our clients. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products.
What we are looking for:
5+ years of experience building products with Python and Django.
High proficiency in SQL with experience using databases like PostgreSQL.
Experience scaling cloud infrastructures with Docker or Kubernetes is a plus.
Experience managing cloud infrastructures, specifically AWS or GCP.
You follow the best practices and conventions.
Relevant experience in CI/CD and related tools.
Ability to work with minimal supervision.
Intermediate-advanced English level.
You can communicate well with both technical and non-technical clients.
Nice-to-have:
- Time zone: CET (+/- 3 hours).
Responsibilities:
Ability to build libraries and frameworks of reusable efficient code.
Competence in designing and implementing low-latency, stable and performing applications.
Capacity to effectively collaborate with other team members and stakeholders remotely.
Ability to implement data protection systems.
Competence in data storage solutions.
What we offer:
Get paid, not played
No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options.
Predictable project hours
Enjoy a harmonious work-life balance with consistent 8-hour working days with clients.
Flex days, so you can recharge
Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify.
Career-accelerating positions at cutting-edge companies
Discover exclusive long-term remote positions at the world's most exciting companies.
Hand-picked opportunities, just for you
Skip the typical recruitment roadblocks and biases with personally matched positions.
One seamless process, multiple opportunities
A one-time contracting process for endless opportunities, with no extra assessments.
Compensation
Enjoy the same pay, every month with positions landed through Proxify.
Original job post link below:
Senior Elixir EngineerWe are hiring a contract-based Senior Elixir Engineer for the garden3d creative collective
About garden3d
We are worker-owned creative collective, innovating on everything from brands and IRL communities to IoT devices and cross-platform apps. We share profit, open source everything, spin out new businesses, and invest in exciting ideas through financial and/or in-kind contributions.
Our client roster includes Google, Stripe, Figma, Hinge, Black Socialists in America, ACLU, Pratt, Parsons, Mozilla, The Nobel Prize, MIT, Gnosis, Etsy & Gagosian. We’re the software team behind innovative products like The Light Phone & Mill, and we a global, decentralized community space collective called Index Space.
We think of our garden3d as a collective for creative people, prioritizing a happy, talented, and erse studio culture. We work on projects that bring value to our world, and we balance deep care for the work we do with a genuine curiosity about life outside of our jobs.
Who we’re looking for:
Right now, we’re looking for a Senior Elixir Engineer with expertise in web, backend and/or native app development, and interest in systems architecture and IoT.
In this role, you’ll work on a variety of client projects to find cost-effective, high-quality, pragmatic solutions to complex problems. You would work on full-stack apps across many industries, from e-commerce to connected hardware products. Responsibilities will include:
- Crafting technical architecture plans through interfacing with clients to understand product requirements
- Developing and optimizing technical solutions while keeping in mind performance, scalability, maintainability, and cost-effectiveness
- Participating in code reviews, providing constructive feedback to teammates and ensuring adherence to best practices
- Contributing to project success by keeping a close eye on team velocity, project scope, budget, and timeline
- Negotiating with clients to align project scope with budget and timeline, if needed
The person we’re looking for is happy, relaxed and easy to get along with. They’re flexible on anything except conceits that will lower their usually outstanding work quality. They work “smart”, by carefully managing their workflow and staggering features that have dependencies intelligently — they prefer deep work but are OK coming up to the surface now and then for top level / strategic conversations.
We believe people with backgrounds or interests in design, art, music, food or fashion tend to have a well rounded sense of design & quality — so a variety of hobbies or side projects is a big nice to have!
Must Have Competencies:
- Fluency in Elixir, and production experience maintaining Elixir Phoenix apps
- 8+ years general experience in backend (Ruby on Rails, Elixir Phoenix, Python Django, or Node Express) and/or native app development (React Native, Flutter, Android, AOSP, Kotlin/Java).
- Comfort with building performant and polished frontend applications (React, CSS, Accessibility, etc)
- Extensive experience with API Design and knowledge of REST and GraphQL, as well as authentication strategies with JWTs and OAuth 2.0.
- Fluency in SQL & database operations, and extensive experience with one of PostgreSQL, MongoDB, MySQL or SQLite.
- Fluency in HTTP, Caching, Status Codes, Security Standards and other Web protocols & patterns.
- Experience with AWS, GCP, or Azure and a core understanding of best practices such as IAM & credential management.
- Production experience with PaaS providers such as Heroku, Render, Cloud66, Vercel, Elastic Beanstalk, EC2, Docker, or Gigalixir.
Nice to Have Competencies:
We’re always pitching for new and exciting technology niches. Some of the areas below are relevant to us!
- Fluency in Elixir LiveView or experience with Rails Hotwire
- Experience working with LLMs, Vector Databases, and other generalist AI-enabled application patterns
- Product management experience, including defining product roadmaps and working closely with stakeholders.
- Hands-on experience with Zenhub, Trello, Jira or similar.
- Client-facing experience, working directly with customers to gather requirements and provide technical solutions.
- Engineering management experience, including leading teams, setting technical direction, and mentoring developers.
- Experience in Hardware, Firmware, or Internet of Things (IoT).
- Native IDEs (Xcode, Android Studio), Languages & Low Level experience (Swift, Rust, C & C++, Clang & LLVM), Electron, V8 & NAN.
Compensation
Our pay scale ranges from $85 p/hr
to $130 p/hr
pending seniority (& team leadership experience), and our projects are rarely less than 8 full-time weeks at 40 hours per week. Additionally, we pay discretionary bonuses for going over and above — like training & coaching others, winning new business, speaking at conferences, etc.
We prefer long standing relationships with highly accountable and communicative team members, so we encourage candidates to expect longer term engagements. A senior engineer working 40 — 45 full time weeks may take home $150k — $225k USD.
How we interview:
Our interview process starts with a call where you get to meet a few members of our team. From there we’ll ask appropriate candidates to take part in a technical exercise which helps illustrate skill level and comfort.
→ It’s also a great way to see what it’s like to work with us and help support folks who may not have the ‘right title’ but have the experience and technical know-how for the role.
How we work:
We believe that there’s a better balance between the poles of freelancing & full time, and for that reason Sanctuary works differently to most shops:
- Transparency & Ownership: We release out Profit & Loss statements to the community each year, open source our best ideas, and talk business & money with everyone in the company. We’re proud to run our business with integrity, and for that reason we share everything with our team & community.
- **150% Carbon Negative:** Our studio offsets 150% of the carbon we use to do business each year, dated back to our founding in 2015. We turn down work that is not in-line with our morals, and we encourage our peers to do the same. We were certified climate neutral earlier this year.
- **Strong Morals:** Since our founding, we've turned down somewhere between $1mm - $2mm of work that didn't meet our moral standards. (Most of that was DTC brands that can't show a valid sustainability initiative).
- Async & Decentralized: We use tools optimized for calm, thoughtful communication, and opt for async whenever possible. We fight hard to maintain our focus time.
- Remote Friendly: Our company is fluent in remote work, making our workplace more decentralized, and democratized in the process.
- Ideas & Products: In our spare studio time, we work to build our own open source or internal products to ersify & bolster our income. We create amazing technology products for our clients, so why not for the studio?
→ Read more on our Substack, over here, or our Medium, over there.
We’re excited to hear from you! ❤
You can also apply via this form →The garden3d Creative Network
Help us build the future of supply chain intelligence.
We're a small, fast-moving team building a next-generation supply chain AI platform. As a startup, we prioritize development speed and iteration. Creating solid and clean building blocks while delivering meaningful features is top of mind right now. We're well-funded and backed by prominent investors, founded by serial entrepreneurs who've previously raised hundreds of millions and built category-defining companies.
We need a Senior Frontend Engineer with a focus on Svelte who thrives in ambiguous environments, takes ownership, and can translate ideas into working interfaces, even when designs or specs are still in flux.
What You’ll Do:
- Work on frontend architecture and implementation
- Build dynamic, responsive UIs using Svelte (or React, if needed)
- Rapidly prototype features — sometimes before designs are finalized
- Collaborate closely with our designer and backend engineers
- Start with mock data or no data, then wire in backend integrations
- Improve development speed through smart tooling, CI, and test coverage
- Bring a product-minded approach to usability and interaction design
- Contribute to core architecture decisions for a system that works hand-in-hand with AI workflows
You Should Have:
- 5+ years of frontend development experience (ideally in start-up or fast-paced teams)
- Deep experience with Svelte or React (we’re leaning toward Svelte)
- Strong knowledge of component design, performance, and modern frontend practices
- Ability to move quickly from idea to prototype to production
- Self-driven, focused, and capable of working independently with minimal oversight
- Comfortable communicating and making decisions in a distributed team
Bonus Points:
- Built or worked on AI-integrated, data-heavy, or real-time applications
- Experience setting up frontend CI/testing pipelines or using tools like Storybook
- Skilled in UI prototyping and fast idea validation
Why Join Us?
- You’ll have direct impact — this isn’t a cog-in-the-machine role
- Work with a lean team where your decisions shape the product and culture
- Build fast, experiment often, and learn from real users
- High ownership with the flexibility to work where and when you’re most productive
- Join early, grow with the company, and help define what great looks like

anywhere in the worldfull-timetop 100
The Role:
We are looking for a Senior Vue.js Developer for one of our clients. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products and growth features.
What we are looking for:
- +5 years experience with Vue.js and object-oriented programming.
Proficiency in JavaScript, including its syntax and features.
Strong understanding of the Vue.js framework and its core principles, and ecosystem.
Working experience with HTML5 and CSS3.
Knowledge of server-side rendering.
Ability to write efficient, secure, clean, and scalable code.
Experience in consuming and designing RESTful APIs.
Intermediate-advanced English level.
Ability to communicate well with both technical and non-technical clients.
Nice-to-have:
- Time zone: CET (+/- 3 hours).
Familiarity with automated JavaScript testing.
Knowledge of modern development tools, like Git.
Angular, React,Typescript knowledge.
Responsibilities:
Design and develop innovative web applications that draw the user’s attention.
Write reusable, effective, and scalable code.
Build modular and reusable components and libraries.
Implement frontend components with Vue.js framework.
Test, update and optimize the application for performance and security.
- Collaborate with other team members and stakeholders.
What we offer:
Get paid, not played
No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options.
Predictable project hours
Enjoy a harmonious work-life balance with consistent 8-hour working days with clients.
Flex days, so you can recharge
Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify.
Career-accelerating positions at cutting-edge companies
Discover exclusive long-term remote positions at the world's most exciting companies.
Hand-picked opportunities, just for you
Skip the typical recruitment roadblocks and biases with personally matched positions.
One seamless process, multiple opportunities
A one-time contracting process for endless opportunities, with no extra assessments.
Compensation
Enjoy the same pay, every month with positions landed through Proxify.

anywhere in the worldfull-time
Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.
What we offer:
- The rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers.
- No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
- We'll manually find the best project for you according to your skills and preferences.
- Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
- We respect your seniority so you can expect no micromanagement or screen trackers.
- Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
- We will support you from the time you submit the application throughout all cooperation stages.
- Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
- Through our community, we will connect you with the best developers from more than 50 countries.
We have several Senior React Full-Stack positions available. Here are the general requirements for these roles.
Senior React Native & Node.js Position - Mobile Developer:
- 4+ years of software development experience.
- 3+ years of commercial experience with React Native and Node.js.
- Experience with TypeScript is required.
- Experience with Firebase or AI is a strong plus.
Senior Node & React Position - Full-stack Developer:
- 5+ years of software development experience.
- 5+ years of commercial experience with React.js and Node.js.
- Experience with Next.js, TypeScript, AWS, and Supabase is required.
Other requirements:
- Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
- Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
- Strong self-organizational skills — ability to work full-time remotely with no supervision.
- Reliability — we want to trust you and expect that you won’t let us and the client down.
- Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.
Sounds good for you? Apply now and join the Lemon.io community!
NOT YOUR TECH STACK?
We have multiple projects available for Senior Developers. If you have 4+ years of commercial software development experience and are proficient in any of the following areas — AI Engineering, React & Python, Data Engineering, Python & LLM, Blockchain, Game Development, WordPress & Figma, Svelte & TypeScript, Svelte & Node, Svelte & Python, or Shopify & JavaScript — we’d be happy to connect and match you with a suitable project.
If your experience matches our requirements, be ready for the next steps:
- VideoAsk — watch a short video about our startup, up to 10 minutes
- Complete your profile on our website
- 30-minute screening call
- Technical interview
- Feedback
- Magic Box (we are looking for the best project for you).
We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.
P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, the U.S (if you are an owner of W-9 ben form), Canada, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), and the the UK. However, we have some exceptions.
At the moment, we don’t have a legal basis to accept applicants from the following countries:
- European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.
- Latin America: Cuba and Nicaragua
- Most Asian countries and Africa.
We expand and shorten the list of exemptions regularly.
We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.
Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.
We’re looking for a Senior iOS Engineer with a strong background in Information Security to join our Mobile team. This is a high-impact role at the intersection of mobile engineering and security, where you’ll help shape the future of mobile device intelligence and fraud prevention.
You’ll be a key contributor to our iOS SDKs—building cutting-edge detection signals, optimizing performance, and delivering an exceptional developer experience. You'll also collaborate closely with product managers, backend engineers, and data analysts to drive innovation through new methodologies and data-informed decisions.
What You’ll Do:
- Lead the development and evolution of our iOS products:
Fingerprint iOS PRO SDK – Design and implement detection signals; improve performance, stability, and reliability.
Fingerprint iOS OSS SDK & Showcase App – Maintain and advance our open-source offerings.
Fingerprint Device Intelligence Demo App – Build new features and implement UI screens from Figma designs using SwiftUI.
Research and prototype new methodologies that enhance our fraud prevention capabilities, efficiency, and technical edge.
Conduct post-deployment analysis on collected data and collaborate on improving server-side logic and detection systems.
Work cross-functionally with backend engineers, PMs, and security researchers to deliver impactful features end-to-end.
What We’re Looking For:
5+ years of hands-on iOS development experience in a senior-level capacity.
Located in EMEA
Strong foundation in Information Security, with prior experience as an iOS engineer in a security-focused organization or on a security-centric product.
Demonstrated ability to build native iOS applications and SDKs from the ground up.
Proficiency in Swift and the iOS SDK; hands-on experience with SwiftUI for UI development.
Experience building tools for other developers is a strong plus.
Data-savvy mindset with a comfort level working with product and data teams.
Excellent written and verbal communication skills; thrive in a remote-first, async team environment.
Nice to Have:
Experience with GitHub Actions
Familiarity with obfuscation techniques
Open-source contributions—share your GitHub profile if applicable.
Interest in expanding into backend development, such as writing backend detection logic.
Engagement in the InfoSec community through conference speaking, writing, or active participation.
Software Engineer- Javascript Frameworks - FS Poly Required - 7+ yrs of Experience (Partial Telework) Halogen Engineering is looking for a Software Engineer who has skills and technical experience with Javascript frameworks. Location: Annapolis Junction, MD/Hybrid Travel Required: No Shift: Day Remote Type: Hybrid (Up to 16 hours of telework per week, however telework hours will depend on tasking) Security Clearance: Current TS/SCI Polygraph: Required Salary Range The projected compensation range for this position is 172K to 206K (annualized USD). Salary is determined by various factors, including but not limited to location, the inidual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. Required Skills Developing applications using AngularJS / React / Vue (other JS frameworks)
Developing Java Web or NodeJS applicationsExperience using and implementing CSSDeveloping or integrating with RESTful Services Desired Skills Experience working with querying or building relational or non-relational databases (i.e., MongoDB, ElasticSearch, PostgreSQL).Experience building user-facing web applications in JavaScript frameworks using React, Vite, ReduxExperience with DockerExperience using and implementing SCSS and Tailwind CSSExperience using web socketsExperience with AWSExperience with generating technical documentationExperience working in an Agile software development environmentDeveloping applications that are 508 compliantExperience managing software code using GitLab (specifically GitLab CI/CD)Experience with Jira and Confluence Qualifications A Master's degree with five (5) years of system engineering experience OR a Bachelor's degree with seven (7) years of systems engineering experience in a Qualified Engineering Field (Aeronautics, Biomedical, Chemical, Civil, Computer, Electrical, Environmental, Mechanical, Nuclear, Software, Systems, and Engineering Management) or a related discipline (Chemistry, Computer Science, Information Systems, Mathematics, and Physics) from an accredited college or university OR a High School Diploma or GED with nine (9) years of systems engineering experience. CareFirst Insurance Medical Plans Three available medical plans-2 Platinum PPO Plans ($0 Deductible) and 1 HSA Plan ($1500 deductible) Halogen pays 100% Medical Premium Costs up to $25,000 CareFirst Wellness Rewards Program Dental Plan Halogen pays 50% of the plan costs Vision Plan Halogen pays 100% of the plan costs 401K Retirement Plan 10% contribution paid by the company, automatically vested and paid in each pay period. Life Insurance, AD&D, Short and Long Term Disability Coverage Paid Time Off 20 Paid Time Off Days6 Federal Holidays5 Floating Holidays Bonuses Based on performance and billable hours Halogen Engineering Group does not discriminate in employment on the basis of race, color, religion, sex (including pregnancy and gender identity), national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, military service, or other non-merit factor.Job Description Software Engineer - Back End - 20+ yrs of Experience (PARTIAL TELEWORK) - TS/SCI w/Poly clearance is required Halogen Engineering Group is looking for a Software Engineer with back end experience. Location: Annapolis Junction, MD/Hybrid Travel Required: No
Shift: DayRemote Type: Hybrid (Telework hours will depend on tasking)Security Clearance: Current TS/SCIPolygraph: Required Salary Range The projected compensation range for this position is 241K to 289K (annualized USD). Salary is determined by various factors, including but not limited to location, the inidual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. Requirements Qualifications REQUIRED QUALIFICATIONS:JPA / Hibernate Database Development ExperienceRESTful ServicesJava Message Service (JMS)Mongo DBRelational databases such as PostgreSQL or CockRoachDBData modeling using relational databases for SpringSpring BootSwagger to create RESTful APIsLinux CLI toolsParse and transform JSON DESIRED QUALIFICATIONS:Full Stack experienceAWS and KubernetesGitlab CI/CD and DockerElasticsearch A Master's degree with eighteen (18) years of system engineering experience OR a Bachelor's degree with twenty (20) years of systems engineering experience in a Qualified Engineering Field (Aeronautics, Biomedical, Chemical, Civil, Computer, Electrical, Environmental, Mechanical, Nuclear, Software, Systems, and Engineering Management) or a related discipline (Chemistry, Computer Science, Information Systems, Mathematics, and Physics) from an accredited college or university OR a High School Diploma or GED with twenty four (24) years of systems engineering experience. Benefits CareFirst InsuranceMedical Plans Three available medical plans-2 Platinum PPO Plans ($0 Deductible) and 1 HSA Plan ($1500 deductible)
Halogen pays 100% Medical Premium Costs up to $25,000CareFirst Wellness Rewards ProgramDental Plan Halogen pays 50% of the plan costsVision Plan Halogen pays 100% of the plan costs401K Retirement Plan 10% contribution paid by the company, automatically vested and paid in each pay period. Life Insurance, AD&D, Short and Long Term Disability Coverage Paid Time Off 20 Paid Time Off Days 6 Federal Holidays 5 Floating Holidays Bonuses Based on performance and billable hours Halogen Engineering Group does not discriminate in employment on the basis of race, color, religion, sex (including pregnancy and gender identity), national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, military service, or other non-merit factor.Software Engineer - UI Developer - 20+ yrs of Experience - PARTAIL REMORE - TS/SCI w/Poly Required Halogen Engineering Group is looking for a Software Engineer that is an experienced UI Developer. Location: Columbia, MD Travel Required: No Shift: Day Remote Type: Onsite Security Clearance: Current TS/SCI Polygraph: Required Salary Range The projected compensation range for this position is 241K to 289K (annualized USD). Salary is determined by various factors, including but not limited to location, the inidual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. Requirements Analyze user requirements to derive software design and performance requirements Debug existing software and correct defects Provide recommendations for improving documentation and software development process standard Design and code new software or modify existing software to add new features Integrate existing software into new or modified system or operating environment Develop simple data queries for existing or proposed databases or data repositories Write or review software and system documentation Serve as team lead at the level appropriate to the software development process being used on any particular project Capabilities • Analyze user requirements to derive software design and performance requirements • Debug existing software and correct defects • Provide recommendations for improving documentation and software development process standard • Design and code new software or modify existing software to add new features • Integrate existing software into new or modified system or operating environment • Develop simple data queries for existing or proposed databases or data repositories • Write or review software and system documentation • Serve as team lead at the level appropriate to the software development process being used on any particular project • Design or implement complex database or data repository interfaces/queries • Develop or implement algorithms to meet or exceed system performance and functional standards • Assist with developing and executing test procedures for software component • Develop software solutions by analyzing system performance standards, confer with users or system engineers; analyze systems flow, data usage and work processes; and investigate problem areas • Modify existing software to correct errors, to adapt to new hardware, or to improve its performance • Design, develop and modify software systems, using scientific analysis and mathematical models to predict and measure outcomes and consequences of design • Design or implement complex algorithms requiring adherence to strict timing, system resource, or interface constraints; Perform quality control on team products • Implement recommendations for improving documentation and software development process standards • Oversee one or more software development teams and ensure the work is completed in accordance with the constraint of the software development process being used on any particular project • Confer with system engineers and hardware engineers to derive software requirements and to obtain information on project limitations and capabilities, performance requirements and interfaces • Coordinate software system installation and monitor equipment functioning to ensure operational specifications are met • Recommend new technologies and processes for complex software projects • Serve as the technical lead of multiple software development teams • Select the software development process in coordination with the customer and system engineering • Ensure quality control of all developed and modified software • Delegate programming and testing responsibilities to one or more team and monitor their performance Qualifications A Bachelor's degree in computer science or related discipline from an accredited college or university, plus twenty (20) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity OR
Twenty four (24) years of experience as a SWE, in programs and contracts of similar scope, type, and complexity. Benefits CareFirst Insurance Medical Plans Three available medical plans-2 Platinum PPO Plans ($0 Deductible) and 1 HSA Plan ($1500 deductible)Halogen pays 100% Medical Premium Costs up to $25,000CareFirst Wellness Rewards ProgramDental Plan Halogen pays 50% of the plan costsVision Plan Halogen pays 100% of the plan costs401K Retirement Plan 10% contribution paid by the company, automatically vested and paid in each pay period. Life Insurance, AD&D, Short and Long Term Disability Coverage Paid Time Off 20 Paid Time Off Days 6 Federal Holidays 5 Floating Holidays Bonuses Based on performance and billable hours Halogen Engineering Group does not discriminate in employment on the basis of race, color, religion, sex (including pregnancy and gender identity), national origin, political affiliation, sexual orientation, marital status, disability, genetic information, age, membership in an employee organization, retaliation, parental status, military service, or other non-merit factor.Job Title : Xpedition ECAD Layout Designer - Remote Location: Remote - USA Wage Range: 60-65 Job Number: 25-02954 Job Description: Our client, a large defense contractor, has an immediate opening for a Xpedition ECAD Layout Designer to work remote from the USA. The Senior Advanced Electrical Computer-aided Design (ECAD) Designer opening provides an opportunity to develop the cutting-edge technology that supports some of our nation's fundamental defense services. GDMS employees work closely with esteemed clients to develop solutions that allow them to carry out high-stakes national security missions. The selected candidate will work with collaborative teams to design, develop and manage CAD software solutions for our client. In addition to receiving a competitive salary and generous health and personal benefits, the Senior Computer-aided Design Software Engineer will enhance their skill set by working among a talented and technically accomplished group of colleagues. The employee will also enjoy a flexible work environment where contributions are recognized and rewarded. The Senior Electrical Computer-aided Design Engineer will possess a thorough understanding of the design and documentation requirements for Printed Circuit boards. In addition, the qualified candidate must be experienced in generating printed board designs for digital signal processing, hi-frequency radio frequency designs, and understand routing principles relating to hi-speed routing and interference design. Candidate must have: Experience Xpedition VX2.13 or higher Multi-layer experience up to 20 layers Knowledge of PCB design and fabrication details Experience working in an Integrated Product Team environment Extensive experience in design, drafting, detailing and packaging of PCB board layout designs that include, but are not limited to symbol, cell and footprint generation, PCB layout, PCB electronic packaging, PCB drawing generation Experience troubleshoot design data and configuration problems with outside vendors Ability to multi-task and handle numerous jobs simultaneously. Qualifications: Bachelor's degree in a related specialized area or field or equivalent is required plus a minimum of 8 years of relevant experience; or Master's degree plus a minimum of 6 years of relevant experience. Due to the nature of work performed within our facilities, U.S. citizenship is required. Additional Responsibilities Deliver innovative, flexible, integrated solutions to meet changing business needs in PCB design. Support and engage in programs, projects and practices behind the our client's culture and strategy, and comply with all policies and procedures. Follow industry and department trends and developments to ensure our client's services are consistent with, and/or superior to, industry best practices. Candidates should demonstrate sophisticated problem solving skills, as well as an ability to design, develop and implement innovative client solutions. Equal opportunity employer as to all protected groups, including protected veterans and iniduals with disabilities While an hourly range is posted for this position, an eventual hourly rate is determined by a comprehensive salary analysis which considers multiple factors including but not limited to: job-related knowledge, skills and qualifications, education and experience as compared to others in the organization doing substantially similar work, if applicable, and market and business considerations. Benefits offered include medical, dental and vision benefits; dependent care flexible spending account; 401(k) plan; voluntary life/short term disability/whole life/term life/accident and critical illness coverage; employee assistance program; sick leave in accordance with regulation. Benefits may be subject to generally applicable eligibility, waiting period, contribution, and other requirements and conditions.
About the Role
This role will focus on driving the design and implementation of general software that empowers our operations teams to better serve our healthcare providers, thus giving them more time to focus on patients and deliver better services. We are looking for someone with a minimum of two years of software engineering experience.
What You’ll Do
Build end-to-end products to to scale and empower our operations teams
Be a part of a tremendously fast-paced team that celebrates fast execution and decision
Work across the entire software stack
Work with a stack that includes Python, Vue, React Native, Flask, and other frameworks
What You Have
At least five years of production software engineering experience
Expert in Python
Able to work on both frontend (JavaScript, TypeScript, React) and backend (Python) in general and deliver product end-to-end
Basic understanding of cloud solutions (GCP, Docker, Kubernetes)
Familiarity with modern software development methodologies and cycles
Understand standard web-based technologies, such as restful standards and relational databases (eg, PostgreSQL)
Have a strong product engineering sense with a can-do builder attitude
Able to identify opportunities to improve the current process
Strong proficiency in the English language, including the ability to articulate ideas clearly and concisely in both verbal and written formats.
Bonus Points If You Have
Having worked on greenfield projects before, build and ship products from scratch
Worked in the healthcare industry before
Experience working in a fast pace environment (we ship fast)
Remote work experience
Familiarity with BI software
The first stage will be a basic take-home assessment. Once we review the submission and the feedback is positive, we will contact you to schedule the first interview.
Note: You will not be eligible for benefits as an international contractor at this time.
Why you’ll love working at Commure + Athelas:
Highly Driven Team: We work hard and fast for exceptional results, knowing we’re doing mission-driven work to transform the country’s largest sector.
Strong Backing: We are backed by top investors including General Catalyst, Sequoia, Y Combinator, Lux, Human Capital, 8VC, Greenoaks Capital and Elad Gil.
Incredible Growth: Prior to our merger, Commure and Athelas had independently grown more than 500% YoY for three consecutive years. We’ve achieved Series D funding, have an industry-leading runway, and continue to scale rapidly.
Synertex LLC is seeking a Software Engineer to support a U.S. Federal Government Agency in McLean, VA / Pentagon. We are expanding work on a current contract and need a Software Engineer with experience in both front and back-end development to provide innovative solutions to the client's most pressing requirements. Additionally, the Software Developer will have a keen understanding of open-source data development tools and processes. This is a hybrid remote position with some on-site requirements that require a candidate to be within reasonable commutable distance to McLean, VA and/or the Pentagon. Join our team of data visualization experts to focus on delivering practical and efficient solutions in support of our client's incredibly important mission. Benefits include competitive PTO, 11 Paid Government Holidays, a 401k with 6% match, and a comprehensive list of health care options. Clearance required: US citizen willing to obtain a TS/SCI Clearance and pass a polygraph. RESPONSIBILITIES: Work within a team environment to develop a software-based platform that will facilitate rapid decision making and increased situational awareness across a variety of users, disciplines, and geographic locations. Build robust, maintainable, well documented, and well tested enterprise-level applications. Communicate effectively both verbally and in writing with the customer and other team members. Including managers, data scientists, DevOps engineers, and other senior and junior/midlevel developers. Work on developing / integrating / operationalizing full-stack advanced analytic web applications through the Authority to Operate (ATO) process on classified networks. REQUIREMENTS: 6-10 years of experience. Experience and knowledge of web application development using Python and Django. Experience using Docker / Docker Compose. Knowledge and experience of classified government networks and Amazon Web Services (AWS) including RDS Aurora, and ECS / EKS, VPC, ALB Linux / UNIX Familiarity with Government ATO application compliance, approval, and deployment.
Test Engineer Sr Advisor Department of Corrections OSSD ASD has an opportunity for a dynamic and collaborative senior test engineer to join our team that is working on highly visible web application for a government client. We are looking for energetic iniduals who want to enhance their professional career in a fast-paced federal environment at doing cutting edge work. The main responsibilities include but not limited to: Design, develop, and execute comprehensive test plans and test cases for web application features Identify, document, and track bugs and issues using bug tracking systems Verify bug fixes and perform regression testing to ensure stability
Test Automation Develop and maintain automated test scripts using Python-based testing frameworks (pytest, unittest) Build React component testing using Jest and React Testing Library Build and enhance automated test suites for CI/CD pipelines running on AWS infrastructure Perform API testing for Python backend services using tools like pytest and requests Implement performance and load testing scenarios for cloud-deployed applications Test CDN performance and caching behavior with Cloudflare integrationCollaboration & Communication - Provide clear and actionable feedback on product quality and user experience Technical Skills• 10+ years of experience in software quality assurance, preferably with Python backend and React frontend applications• Strong knowledge of React components, hooks, and frontend testing patterns• Experience with Python testing frameworks (pytest, unittest, requests for API testing)• Proficiency in JavaScript/TypeScript for React component testing and end-to-end testing• Experience with testing frameworks: Jest, React Testing Library, Cypress, Selenium• Understanding of RESTful APIs and Python web frameworks (Django, Flask, FastAPI)• Knowledge of AWS services and cloud testing strategies (EC2, S3, Lambda, RDS, CloudFormation)• Experience with CDN testing and performance optimization (Cloudflare experience preferred)• Understanding of SQL and database testing concepts• Experience with version control systems (Git)Testing Expertise• Solid understanding of software testing methodologies and best practices• Experience with both black-box and white-box testing techniques• Knowledge of different testing types (functional, regression, integration, performance)• Familiarity with browser developer tools and debugging techniques• Experience with mobile and responsive web testingSoft Skills• Strong analytical and problem-solving abilities• Effective written and verbal communication skills• Ability to work independently and manage multiple priorities Preferred Qualifications• Bachelor's degree in Computer Science, Engineering, or related field• Experience with AWS cloud services (EC2, S3, Lambda, RDS, CloudWatch, API Gateway)• Knowledge of Cloudflare features and CDN performance testing• Experience with Infrastructure as Code (CloudFormation, Terraform)• Familiarity with containerization technologies (Docker, Kubernetes on AWS EKS)• Knowledge of Python web frameworks (Django, Flask, FastAPI)• Experience with React state management (Redux, Context API)• Understanding of Agile/Scrum methodologies• Previous experience in a startup or fast-paced environmentTools & Technologies We Use• Frontend: React, TypeScript/JavaScript, Jest, React Testing Library• Backend: Python, pytest, unittest, requests• End-to-End Testing: Cypress, Selenium• Cloud Infrastructure: AWS (EC2, S3, Lambda, RDS, CloudWatch, API Gateway)• CDN & Performance: Cloudflare• CI/CD: AWS CodePipeline, GitHub Actions, or Jenkins• Bug tracking: Jira, Linear, or similar• API testing: Postman, pytest, requests• Performance testing: JMeter, LoadRunner, AWS Load Testing• Databases: PostgreSQL, MySQL, DynamoDB• Version Control: Git, GitHub/GitLab Location: Remote with some travelWe are looking for expert RoR and React developers who are quick learners and passionate about their work.
Why Join Us?
- Stable and self-funded: Founded in 2008, OTGS is proudly profitable and not dependent on external investments.
- Fully remote global team: Collaborate with talented colleagues worldwide.
- Industry leaders: Creators of WPML, the №1 multilingual plugin for WordPress, powering over 1.5 million sites.
- Innovative projects: Currently building PTC (Private Translation Cloud), our next-generation SaaS platform for seamless software localization.
- Professional growth: Structured mentorship programs for new team members.
- Excellent benefits: Designed to support your well-being both inside and outside of work.
- Positive culture: Genuinely kind, collaborative, and professional work environment.
- Career advancement: Real opportunities for internal promotion and professional development.
Indicators You're a Great Fit
- You have strong experience with Ruby on Rails and at least one modern JavaScript framework.
- You're passionate about writing clean, maintainable, and high-quality code.
- You have proven experience building and scaling robust systems.
- You thrive on solving complex challenges independently within a collaborative team environment.
What You'll Do
As a valued developer on our team, you’ll participate in:
- Feature planning and implementation
- Maintenance and optimization
- Test automation
Learn more about our PTC project, its current status, technology stack, and upcoming milestones.
Ready to make a meaningful impact at a company that values innovation and teamwork? Apply today and join our global team!
We're looking for Senior PHP and JS developers who are passionate about quality, love solving challenging problems, and enjoy building products used by millions.
Why Join Us?
Trusted & Profitable: Since 2007, OTGS has grown into a self-funded and stable company supporting over 1.5 million websites worldwide.
Remote-first: Join a erse team of smart and friendly people working from all corners of the world.
Creators of WPML: You'll contribute to the #1 multilingual plugin for WordPress, used by hundreds of thousands of happy clients every day.
Real Impact: Your work will directly improve the experience of users around the globe.
Growth-friendly: We support your personal and professional development through mentorship, learning tools, and internal opportunities.
Wellbeing focused: We offer great benefits to help you thrive both in and out of work.
Indicators You're a Great Fit
Strong experience with PHP, and JS
Deep understanding of databases, code architecture, and design patterns
Passion for writing automated tests (PHPUnit, E2E, etc.)
What You'll Do
As a key player on the team, you will:
Analyze and fix compatibility issues with third-party plugins and themes.
Collaborate with external developers to ensure smooth WPML integration.
Build internal tools and test cases to streamline workflows.
Take ownership of your code – from writing to testing and delivery.
Ready to make a meaningful impact at a company that values innovation and teamwork? Apply today and join our global team!

anywhere in the worldfull-time
Empower the voices of the world @ Zencastr. If you want to push the world of podcasting into the future, come join a team who loves to live on the edge! We are a fully distributed team of smart people who are passionate about changing the world one voice at a time.
You should join us if you:
Have significant experience with Node.js and good knowledge of JS fundamentals
Have a good understanding of computer science fundamentals. You might not have gone to school for it, but you know the difference between heap and stack, different time complexities, and which patterns to use and when.
You are ambitious. You might want to build your own company one day or have tried to tackle the toughest tech problems just for fun.
You enjoy writing Javascript or Typescript
You have an eye for performance. Whether thinking about the latest client side bundling techniques, or the proper way to shard a mongo database, you want things to be fast.
You are just as comfortable working in a browser context or a node.js runtime
You are a team player
You have good communication skills
What sets you apart:
You have a passion for high performance applications
You have significant open source contributions
You want to work in a fast growing startup. Which comes with the blood, sweat and tears of working to disrupt an established industry
You have empathy for the end user. A spec is a conversation starter, as an advocate for the end user you always are thinking about how to best serve their needs
You have an eye for code quality and you strive to uphold best practices in engineering, security, and design
Why you should choose us:
You’ll be working with world class engineers, Phd’s, and designers in a fully distributed team
Work in an agile and fast changing environment
Equity commensurate to your contribution in a profitable company
Health insurance
Unique challenges and the support and talent to solve them
4 weeks PTO
Freedom to work where you please
What we’re looking for:
5+ years of Typescript, React, Node.js development
Strong document / key-value store knowledge (Redis, MongoDB)
Strong SQL knowledge
Strong HTML / CSS / React knowledge
Demonstrable knowledge of building scaleable consumer based apps
Strong experience with unit, integration, and load testing
Experience building APIs
Experience with cloud APIs (Google Cloud, Digital Ocean)
Bonus points if you have:
Experiencing working in high traffic, low latency applications
Good dev ops experience
Digital Signal Processing experience
Strong SQL knowledge
How to apply:
Apply at https://jobs.ashbyhq.com/zencastr/c4c91cc0-c5f9-4773-ab04-d239f9455aee
We are flexible! For the right candidate we ask: What do you need to do your best work?
Overview:
Ready to be pushed beyond what you think you’re capable of?
At Coinbase, our mission is to increase economic freedom in the world. It’s a massive, ambitious opportunity that demands the best of us, every day, as we build the emerging onchain platform — and with it, the future global financial system.To achieve our mission, we’re seeking a very specific candidate. We want someone who is passionate about our mission and who believes in the power of crypto and blockchain technology to update the financial system. We want someone who is eager to leave their mark on the world, who relishes the pressure and privilege of working with high caliber colleagues, and who actively seeks feedback to keep leveling up. We want someone who will run towards, not away from, solving the company’s hardest problems.
While many roles at Coinbase are remote-first, we are not remote-only. In-person participation is required throughout the year. Team and company-wide offsites are held multiple times annually to foster collaboration, connection, and alignment. Attendance is expected and fully supported.
The Coinbase Developer Platform APIs are the easiest way for developers to get started with building crypto applications. Conceived by Coinbase CEO Brian Armstrong, these APIs enable those with no prior knowledge of crypto to begin sending and receiving crypto in as little as 30 seconds. A top priority of the Coinbase Developer Platform (CDP), the CDP APIs encapsulate some of the most cutting-edge technologies in crypto by externalizing Coinbase’s internal services, built over more than a decade of experience. The CDP APIs combine custodial and non-custodial wallets into one clean abstraction, making interactions with the blockchain simple and painless.
The CDP API team owns both server-side APIs and client-side libraries across different languages. The team seeks a full-stack engineer who is passionate about all aspects of excellent developer experiences: authoring clear and informative documentation, building compelling sample applications, interacting directly with customers to incorporate feedback, architecting delightfully simple SDKs, etc. The engineer must be comfortable operating in both frontend and backend codebases, fluent across a variety of programming languages, and demonstrate both high code velocity and quality simultaneously. The CDP API team consists of some of the most prolific and tenured software engineers at Coinbase, and is excited to ship a game-changing set of APIs and SDKs at breakneck speed.
What you’ll be doing (ie. job duties):
⦁ Design, develop, and maintain scalable, secure, and high-performance backend systems for the CDP APIs using Go and Javascript
⦁ Define and maintain clean and conformant HTTP REST API definitions using OpenAPI specifications⦁ Design, develop, and maintain ergonomic, open-source SDKs to interact with the CDP APIs using Ruby, Typescript, Go, Python, and Java ⦁ Author, publish, and maintain clear and concise documentation, including quickstart and how-to guides, to increase adoption of the Platform APIs and SDKs⦁ Develop secure and scalable key management systems, packaged as Docker images, to enable crypto wallet functionality across a range of custodial configurations (e.g. self-custodial MPC)⦁ Work closely with many different teams at Coinbase to externalize their backend services through the Platform APIs, ensuring consistency of concepts, style, and design⦁ Interface directly with customers to collect their feedback and iteratively improve the CDP APIs and SDKs⦁ Build compelling sample applications end-to-end using the CDP APIs and SDKs to demonstrate their value and pressure-test the developer experience⦁ Troubleshoot and debug complex fullstack issues, ensuring stability, reliability, and security⦁ Participate in code reviews and provide constructive feedback to maintain high code quality standardsWhat we look for in you (ie. job requirements):
⦁ 5+ years of experience in both backend and frontend software development
⦁ Mastery of JavaScript and Python; experience with TypeScript, Ruby, Go, and Java is a plus⦁ Excellent verbal and written communication skills, with an eye for detail and a passion for clear, comprehensive developer documentation⦁ Strong understanding of crypto wallets, including key management, cryptography, and blockchain protocols (e.g. EVM)⦁ Proven track record of designing, developing, and shipping high-quality, ergonomic client-side libraries and SDKs⦁ Strong understanding of distributed systems, microservices architecture, and event-driven architectures⦁ Experience with databases (PostgreSQL, MySQL, MongoDB) and caching systems (Redis, Memcached)⦁ Solid knowledge of RESTful API design principles and experience with API development and integration⦁ Familiarity with AWS and containerization technologies like Kubernetes⦁ Understanding of security best practices and experience with implementing secure coding practices for financial systems⦁ Crypto-forward experience, including familiarity with onchain activity such as interacting with Ethereum addresses, using ENS, and engaging with dApps or blockchain-based services.
anywhere in the worldfull-timetop 100
Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.
What we offer:
- The rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers.
- No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
- We'll manually find the best project for you according to your skills and preferences.
- Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
- We respect your seniority so you can expect no micromanagement or screen trackers.
- Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
- We will support you from the time you submit the application throughout all cooperation stages.
- Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
- Through our community, we will connect you with the best developers from more than 50 countries.
We have several Senior React Full-Stack positions available. Here are the general requirements for these roles.
Senior React & Python Position
- 4+ years of software development experience.
- 3+ years of commercial experience with React.js and Python.
- Experience with AWS, GCP, or Azure is required.
- Experience with Next.js, Node.js, Django, TypeScript, or AI is a strong plus.
Other requirements:
- Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
- Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
- Strong self-organizational skills — ability to work full-time remotely with no supervision.
- Reliability — we want to trust you and expect that you won’t let us and the client down.
- Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.
Sounds good for you? Apply now and join the Lemon.io community!
NOT YOUR TECH STACK?
We have multiple projects available for Senior Developers. If you have 4+ years of commercial software development experience and are proficient in any of the following areas — AI Engineering, React & Node, Golang, Python & LLM, React Native & Node, Blockchain, WordPress & Figma, Svelte & TypeScript, Svelte & Node, Svelte & Python, or Shopify & JavaScript — we’d be happy to connect and match you with a suitable project.
If your experience matches our requirements, be ready for the next steps:
- VideoAsk — watch a short video about our startup, up to 10 minutes
- Complete your profile on our website
- 30-minute screening call
- Technical interview
- Feedback
- Magic Box (we are looking for the best project for you).
We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.
P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, the U.S (if you are an owner of W-9 ben form), Canada, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), and the the UK. However, we have some exceptions.
At the moment, we don’t have a legal basis to accept applicants from the following countries:
- European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.
- Latin America: Cuba and Nicaragua
- Most Asian countries and Africa.
We expand and shorten the list of exemptions regularly.
We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.
Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.

$170k – $185kdataengineer
Peerspace is hiring a remote Staff Data Engineer. This is a full-time position that can be done remotely anywhere in the United States.
Peerspace - Unique venues for meetings, events, photo & film shoots.

$130k – $160kengineerfull stack engineergolangpostgresql
Mattermost is hiring a remote Full Stack Engineer. This is a full-time position that can be done remotely anywhere in the United States.
Mattermost - A flexible, open source messaging platform.

engineerfull stack engineerremote ussoftware engineer
Bitwarden is hiring a remote Full Stack Software Engineer (Tools). This is a full-time position that can be done remotely anywhere in the United States.
Bitwarden - Open source password management solutions for iniduals, teams, and businesses.

backenddjangoexecutivefull stackjavascript
Original job post link:
Senior Elixir Engineer Original Job Post Link
🌎 About garden3d
We are a worker-owned creative collective, innovating on everything from brands and IRL communities to IoT devices and cross-platform apps. We share profit, open source everything, spin out new businesses, and invest in exciting ideas through financial and/or in-kind contributions.
Our client roster includes Google, Stripe, Figma, Hinge, Black Socialists in America, ACLU, Pratt, Parsons, Mozilla, The Nobel Prize, MIT, Gnosis, Etsy & Gagosian. We’re the software team behind innovative products like The Light Phone & Mill, and we a global, decentralized community space collective called Index Space.
We think of our garden3d as collective for creative people, prioritizing a happy, talented, and erse studio culture. We work on projects that bring value to our world, and we balance deep care for the work we do with a genuine curiosity about life outside of our jobs.
🔮 Who we’re looking for:
Right now, we’re looking for a Senior Elixir Engineer with expertise in web, backend and/or native app development, and interest in systems architecture and IoT.
In this role, you’ll work on a variety of client projects to find cost-effective, high-quality, pragmatic solutions to complex problems. You would work on full-stack apps across many industries, from e-commerce to connected hardware products. Responsibilities will include:
- Crafting technical architecture plans through interfacing with clients to understand product requirements
- Developing and optimizing technical solutions while keeping in mind performance, scalability, maintainability, and cost-effectiveness
- Participating in code reviews, providing constructive feedback to teammates and ensuring adherence to best practices
- Contributing to project success by keeping a close eye on team velocity, project scope, budget, and timeline
- Negotiating with clients to align project scope with budget and timeline, if needed
The person we’re looking for is happy, relaxed and easy to get along with. They’re flexible on anything except conceits that will lower their usually outstanding work quality. They work “smart”, by carefully managing their workflow and staggering features that have dependencies intelligently — they prefer deep work but are OK coming up to the surface now and then for top level / strategic conversations.
We believe people with backgrounds or interests in design, art, music, food or fashion tend to have a well rounded sense of design & quality — so a variety of hobbies or side projects is a big nice to have!
💸 Compensation
Our pay scale ranges from $85 p/hr
to $130 p/hr
pending seniority (& team leadership experience), and our projects are rarely less than 8 full time weeks at 40 hours per week. Additionally, we pay discretionary bonuses for going over and above — like training & coaching others, winning new business, speaking at conferences, etc.
We prefer long standing relationships with highly accountable and communicative team members, so we encourage candidates to expect longer term engagements. A senior engineer working 40 — 45 full time weeks may take home $150k — $225k USD.
🔑 Must Have Competencies:
- Fluency in Elixir, and production experience maintaining Elixir Phoenix apps
- 8+ years general experience in backend (Ruby on Rails, Elixir Phoenix, Python Django, or Node Express) and/or native app development (React Native, Flutter, Android, AOSP, Kotlin/Java).
- Comfort with building performant and polished frontend applications (React, CSS, Accessibility, etc)
- Extensive experience with API Design and knowledge of REST and GraphQL, as well as authentication strategies with JWTs and OAuth 2.0.
- Fluency in SQL & database operations, and extensive experience with one of PostgreSQL, MongoDB, MySQL or SQLite.
- Fluency in HTTP, Caching, Status Codes, Security Standards and other Web protocols & patterns.
- Experience with AWS, GCP, or Azure and a core understanding of best practices such as IAM & credential management.
- Production experience with PaaS providers such as Heroku, Render, Cloud66, Vercel, Elastic Beanstalk, EC2, Docker, or Gigalixir.
💪 Nice to Have Competencies:
We’re always pitching for new and exciting technology niches. Some of the areas below are relevant to us!
- Fluency in Elixir LiveView or experience with Rails Hotwire
- Experience working with LLMs, Vector Databases, and other generalist AI-enabled application patterns
- Product management experience, including defining product roadmaps and working closely with stakeholders.
- Hands-on experience with Zenhub, Trello, Jira or similar.
- Client-facing experience, working directly with customers to gather requirements and provide technical solutions.
- Engineering management experience, including leading teams, setting technical direction, and mentoring developers.
- Experience in Hardware, Firmware, or Internet of Things (IoT).
- Native IDEs (Xcode, Android Studio), Languages & Low Level experience (Swift, Rust, C & C++, Clang & LLVM), Electron, V8 & NAN.
🎤 How we interview:
Our interview process starts with a call where you get to meet a few members of our team. From there we’ll ask appropriate candidates to take part in a technical exercise which helps illustrate skill level and comfort.
→ It’s also a great way to see what it’s like to work with us and help support folks who may not have the ‘right title’ but have the experience and technical know-how for the role.
👩🏭 How we work:
We believe that there’s a better balance between the poles of freelancing & full time, and for that reason Sanctuary works differently to most shops:
- Transparency & Ownership: We release out Profit & Loss statements to the community each year, open source our best ideas, and talk business & money with everyone in the company. We’re proud to run our business with integrity, and for that reason we share everything with our team & community.
- **150% Carbon Negative:** Our studio offsets 150% of the carbon we use to do business each year, dated back to our founding in 2015. We turn down work that is not in-line with our morals, and we encourage our peers to do the same. We were certified climate neutral earlier this year.
- **Strong Morals:** Since our founding, we've turned down somewhere between $1mm - $2mm of work that didn't meet our moral standards. (Most of that was DTC brands that can't show a valid sustainability initiative).
- Async & Decentralized: We use tools optimized for calm, thoughtful communication, and opt for async whenever possible. We fight hard to maintain our focus time.
- Remote Friendly: Our company is fluent in remote work, making our workplace more decentralized, and democratized in the process.
- Ideas & Products: In our spare studio time, we work to build our own open source or internal products to ersify & bolster our income. We create amazing technology products for our clients, so why not for the studio?
→ Read more on our Substack, over here, or our Medium, over there.
Please click this Important link below or copy the URL (Same as the apply button) to proceed with your application by telling us a bit more about your interest in the role:
Please mention the word DISTINCTIVE when applying to show you read the job post completely (#RMzQuMzAuMTUwLjE0OA==). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.Salary and compensation
$150,000 — $220,000/yearBenefits
🌎 Distributed team
⏰ Async
About Us
We are a dynamic hedge fund specializing in cryptocurrency arbitrage strategies. Our proprietary platform aggregates order books from centralized exchanges (CEXs) like Binance and decentralized exchanges (DEXs) like Uniswap to identify and execute high-frequency trading opportunities. We’re building a robust, scalable infrastructure to support our growing operations in the fast-paced crypto markets. If you’re passionate about low-latency systems, real-time data processing, and fintech innovation, join us to help shape the backbone of our trading engine.
Role Overview
As a Senior Software Engineer focused on Crypto Trading Infrastructure, you will be responsible for designing, building, and maintaining the core systems that power our arbitrage & market making framework. This role emphasizes infrastructure development, including data pipelines, integrations with exchanges, and scalable architectures. You’ll work closely with the fund’s leadership to implement reliable, high-performance solutions while ensuring security and efficiency. Note: Strategy development will be handled internally, so your focus will be on engineering excellence to support predefined trading logic.
This is a full-time position, remote-friendly, with competitive compensation including base salary, performance bonuses tied to fund success.
Key Responsibilities
- Design and implement scalable infrastructure for real-time data aggregation from CEXs and DEXs, including WebSocket clients, API integrations, and order book processing.
- Build and optimize data storage and caching systems using technologies like Redis for high-speed access and SQL databases for trade logging and analytics.
- Develop messaging and communication layers (e.g., using ZMQ) to ensure seamless interaction between services in our Python-based framework.
- Enhance system reliability with fault-tolerant designs, error handling, monitoring, and alerting to minimize downtime in live trading environments.
- Scale the platform for increased volume, incorporating cloud infrastructure (e.g., AWS, GCP) for deployment, containerization (Docker/Kubernetes), and CI/CD pipelines.
- Collaborate on integrating new exchanges, protocols, or tools while maintaining code quality through unit testing, code reviews, and best practices.
- Troubleshoot and optimize for low-latency performance, security (e.g., API key management, encryption), and compliance in a regulated financial context.
- Contribute to documentation and knowledge sharing to support team growth.
- Build and maintain real-time portfolio performance monitoring dashboards using robust database infrastructure (eg. Google Studio, Grafana, others)
Required Qualifications
- Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
- 5+ years of experience as a software engineer, with a focus on backend development in high-stakes environments like fintech, trading platforms, or real-time systems.
- Strong proficiency in Python, including experience with libraries for data handling (e.g., Pandas, NumPy) and asynchronous programming (e.g., asyncio).
- Hands-on experience with databases and caching (e.g., Redis, SQL/PostgreSQL) and messaging queues (e.g., ZMQ, Kafka, or RabbitMQ).
- Familiarity with API integrations, WebSockets, and real-time data streams, ideally in crypto or financial markets.
- Knowledge of cloud platforms (AWS/GCP/Azure) and DevOps tools (e.g., Docker, Kubernetes, Terraform) for building scalable infrastructure.
- Understanding of performance optimization, concurrency, and security best practices in distributed systems.
- Excellent problem-solving skills and the ability to work independently in a fast-paced, startup-like environment.
Preferred Qualifications
- Experience in cryptocurrency or DeFi ecosystems, such as building trading bots, DEX integrations (e.g., Web3.py, Uniswap APIs), or handling blockchain data.
- Background in low-latency trading systems, high-frequency trading (HFT), or arbitrage platforms.
- Familiarity with our tech stack elements (e.g., Redis-based clients, ZMQ messaging) or similar frameworks.
- Contributions to open-source projects or experience in regulated finance (e.g., SEC compliance basics).
- Strong English reading and writing communication skills
What We Offer
- Competitive salary and bonuses based on inidual and fund performance.
- 20% of trading profits.
- Flexible remote work with occasional team meetups.
- Opportunities for professional development, including conferences and training in crypto/fintech.
- A collaborative culture where your infrastructure expertise directly impacts trading success.
To apply, please send your resume to [email protected]. We look forward to building the future of crypto arbitrage with you!

backendcloudcodecssdesign
We are seeking a versatile Full Stack Developer with hands-on experience across both frontend and backend technologies to design, develop, and maintain dynamic web and mobile applications. The ideal candidate has a strong understanding of modern development practices, is comfortable working with cloud environments (AWS), and is skilled in creating seamless user experiences and robust backend systems. This is an exciting opportunity to contribute to impactful client-facing applications in a collaborative and fast-paced environment.Key Responsibilities* Design, develop, test, and deploy responsive web and mobile applications.* Build and maintain APIs and backend services using .NET (C#) or Python* Develop visually appealing and user-friendly frontends using JavaScript frameworks like React and React Native.* Implement clean, maintainable code with best practices in UI/UX, accessibility, and performance.* Collaborate with cross-functional teams using tools like GitHub, Jira, Confluence, and Visual Studio.* Work with SQL-based databases (Postgres, MSSQL, Snowflake) and develop data components including queries and reports using SSIS/SSRS.* Support infrastructure and deployment via DevOps practices and tools like Terraform.* Troubleshoot issues, optimize performance (application, server, and database), and advocate for technical solutions.* Leverage cloud technologies (AWS) for scalable application development and deployment.* Participate in the design of proofs-of-concept, wireframes, and prototypes to illustrate new functionality or workflows.* Provide technical support and ongoing enhancements for platforms such as Salesforce, Workday, ARGO, and ServiceNow.Requirements* 2–5 years of experience developing component-based web, mobile, or desktop applications.* Proficiency in frontend technologies: HTML, CSS (including preprocessors), JavaScript, Node.js, React, React Native, and related build tools.* Strong backend development experience with .NET (C#), Python, and VB.NET.* Solid understanding of SQL databases (Postgres, MSSQL, Snowflake) and reporting tools (SSIS/SSRS).* Experience working with AWS cloud services.* Familiarity with DevOps workflows and infrastructure-as-code tools like Terraform.* Knowledge of software development tools including Visual Studio, GitHub, Jira, and Confluence.* Ability to troubleshoot, self-advocate, and communicate effectively in a collaborative team environment.* Exposure to enterprise platforms like Salesforce, Workday, ARGO, and ServiceNow is a plus.* Strong grasp of user-centered design principles and best practices in performance and usability.If you're passionate about building high-quality applications, enjoy working across the full technology stack, and thrive in collaborative environments, we’d love to hear from you. This is a great opportunity to grow your skills, contribute to impactful projects, and be part of a forward-thinking team.Apply today and help us shape the future of digital solutions. #Salary and compensation
No salary data published by company so we estimated salary based on similar jobs related to Developer, Design, React, DevOps, JavaScript, CSS, Mobile, Engineer and Backend jobs that are similar: $60,000 — $125,000/year #Benefits 💰 401(k)🌎 Distributed team⏰ Async🤓 Vision insurance🦷 Dental insurance🚑 Medical insurance🏖 Unlimited vacation🏖 Paid time off📆 4 day workweek💰 401k matching🏔 Company retreats🏬 Coworking budget📚 Learning budget💪 Free gym membership🧘 Mental wellness budget🖥 Home office budget🥧 Pay in crypto🥸 Pseudonymous💰 Profit sharing💰 Equity compensation⬜️ No whiteboard interview👀 No monitoring system🚫 No politics at work🎅 We hire old (and young) #LocationLatin America
$210k – $260kengineermlproduct
Rocket Money is hiring a remote Staff ML Engineer, Product. This is a full-time position that can be done remotely anywhere in the United States.
Rocket Money - The money app that works for you.

$156.5k – $202.3kengineerfrontend engineerproduct
Buffer is hiring a remote Senior Product Engineer (Frontend). This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.
Buffer - Simpler social media tools for authentic engagement.

backend engineercontractengineerremoterust
About CoW DAO
CoW DAO is on a mission to protect Ethereum users from MEV and optimize trade execution across DeFi. We achieve this through the CoW Protocol, CoW Swap (a leading intent-based DEX aggregator), and the innovative MEV Blocker, which together help secure, aggregate, and route trades for optimal outcomes. We also fund values-aligned projects via the CoW Grants Program.
CoW Protocol is consistently ranked among the top DEX aggregators by monthly volume and is the largest intent-based exchange. Our MEV Blocker protects trades from harmful MEV extraction and is integrated across the Ethereum ecosystem. The CoW AMM is the only live AMM designed to protect liquidity providers from LVR (loss-versus-rebalancing).
With over 100 open-source repositories on Dune Analytics dashboard showcases billions in cumulative trading volume and a rapidly growing user base. As we continue to scale, CoW DAO remains at the forefront of DeFi innovation, prioritizing security, efficiency, and decentralization.
Learn more
About the role
Location: We are a fully remote team, and although we hire almost globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time
Please note we’re not hiring from the US, Australia, or New Zealand
Position: Full-time contractor
We’re looking for a motivated Junior Backend Engineer to support the deployment of CoW Protocol on new blockchain networks, troubleshoot and debug issues, support our on-call rotation, and contribute to our engineering backlog. This role offers a unique opportunity to grow within the position and become a highly skilled Rust Engineer in a production-level Web3 environment.
This is a great fit if you’re someone early in your career who’s excited about learning Rust, solving complex problems, and taking initiative
What You’ll Do
- Help deploy and maintain CoW Protocol across new and existing blockchain networks
- Investigate and debug issues in production environments
- Participate in our on-call rotation (with additional compensation)
- Contribute to the engineering backlog and assist with feature development
- Collaborate with experienced engineers and gradually take on more ownership of Rust-based services
Who You Are
- Recently graduated or have around 3 years of backend experience
- Hands-on experience with Rust, either through personal projects, open-source contributions, or commercial work
- Solid understanding of blockchain and Web3 — you’re familiar with the space, its core concepts, and have prior exposure through work, projects, hackathons or contributions
- Strong problem-solving skills and the ability to work independently
- Proactive mindset, you take initiative and figure things out
- Comfortable working remotely in a highly autonomous, async environment
What we can offer you
- Flexible work environment: Join our hub in Lisbon or work remotely
- Token plan: Have a stake in our mission and shape the future of CoW DAO
- Periodic gatherings: Enjoy opportunities to connect with the rest of the team through regular trips
- Conference allocation: Stay up-to-date with ecosystem advancements using our conference budget
- Learning budget: Use our learning budget to support your higher ambitions
- Hardware budget: Take advantage of a hardware budget for acquiring necessary equipment
- Make an impact: You are joining a startup where you can make a huge difference. Your work matters!
- Flat hierarchies mean fewer processes and bureaucracy - see more of your ideas come to life!
- Flexible work and vacation times: Prioritize work-life balance through our robust flexible work policy and vacation allowance
- Growth: If you’re someone who loves taking the initiative and getting things done, CoW offers lots of opportunities for your inidual growth
Referral Program
Earn 3.000 USDC or USD with the refer-to-earn program. More details here.
Culture
Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!
At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our erse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.

clouddefiengineerfull-timeremote
Who We Are:
Ethena Labs is at the forefront of the next wave of DeFi, dedicated to building products for modern finance. Ethena is a synthetic dollar protocol built on Ethereum that provides a crypto-native solution for money, USDe, alongside a globally accessible dollar savings asset, sUSDe.
Our core mission is to provide truly crypto-native financial solutions that are globally accessible and bridge the gap between TradFi and the digital asset economy. We believe in transparency, efficiency, and empowering both iniduals and institutions with greater control over their assets.
What we are Doing:
Ethena Labs is actively building and deploying a suite of groundbreaking products designed to address key challenges and unlock new opportunities within the digital finance landscape.
Our flagship product, USDe, is a synthetic dollar backed by digital assets, and takes the novel approach of using a delta-neutral hedging strategy to maintain its peg. This provides a truly scalable and censorship-resistant digital dollar.
Building upon USDe, we offer sUSDe. sUSDe provides crypto-native rewards generated from funding rates in derivatives markets, offering an alternative to existing products tethered to the traditional financial system.
Furthermore, we are actively developing solutions to facilitate institutional adoption of digital assets. In partnership with Securitize and Blackrocks BUIDL fund, USDtb provides a more traditional, asset-backed stablecoin option, leveraging established financial infrastructure to appeal to institutional clients. Expanding on this, iUSDe is designed specifically for traditional financial institutions, incorporating necessary compliance features to enable them to access the crypto-native rewards our protocol generates, in an institutional-friendly manner.
Finally, our most ambitious undertaking to date is Converge, our joint blockchain initiative with Securitize. This hybrid blockchain is designed to be the nexus where DeFi meets the needs of CeFi and TradFi. Converge aims to be a primary issuance layer for tokenised assets, integrating seamlessly with existing DeFi protocols to provide institutions with an environment to participate in the decentralised economy.
Through these offerings, Ethena Labs is not just creating new financial products; we are building the foundational infrastructure for a more open, efficient, and interconnected global financial system.
Join us!
We are looking for a Senior/Staff Security Engineer to join us on this exciting journey, ensuring the security and resilience of our platform as we continue to grow.
Location: Outside of the USA and within 5+ hours of GMT
The Role
As a Senior/Staff Security Engineer, you will be at the forefront of securing the next generation of decentralized financial technology. You will take ownership of building and maintaining our platform’s security infrastructure, working across both on-chain and off-chain components. Your work will protect our users and ensure the integrity of our systems in the rapidly evolving crypto and DeFi landscape.
This is an opportunity to make a meaningful impact by contributing to a key part of our platform. You will be involved in every layer of security, from threat modeling and incident response to developing automation tools that streamline our operations. You’ll work closely with our development, DevOps, and product teams, embedding security into the DNA of our products while staying ahead of emerging threats.
What You’ll Do
- Design, develop, and implement security architectures and features for both on-chain and off-chain components of the platform, ensuring defense against vulnerabilities and attacks.
- Identify and mitigate risks by performing threat modeling, security hardening, and vulnerability assessments across the full tech stack.
- Lead incident response efforts, acting as the primary point of contact for security incidents and coordinating with internal and external teams to resolve issues.
- Conduct regular penetration testing and forensic investigations, ensuring identified security weaknesses are addressed swiftly.
- Develop security tools and automation scripts to enhance the efficiency and effectiveness of our security operations.
- Work closely with application development and DevOps teams to integrate security best practices into every stage of the software development lifecycle.
- Stay on top of emerging security trends, threats, and technologies, contributing innovative solutions to continuously improve our security posture.
What We’re Looking For
- 5+ years of hands-on experience in a security engineering or DevSecOps role, with demonstrated expertise in full-stack software security (back-end, front-end, and DevOps).
- Proficiency in designing and implementing robust security architectures for cloud-based systems, and strong experience in securing CI/CD pipelines.
- Experience in intrusion detection, forensic investigation, and leading security incident response.
- Strong understanding of security frameworks, principles, and best practices, with a proactive approach to risk management.
- Ability to effectively communicate security requirements and concepts to both technical and non-technical stakeholders.
- Expertise in Threat Detection and Response, and Endpoint Security is highly desirable
- Experience with crypto/web3 technologies, including smart contract audits, is highly desirable.
- Bachelor’s or Master’s degree in Computer Science, Information Security, or a related field.
- Industry certifications such as CISSP, OSCP, Sec+, or similar are a plus.
$150,000 - $200,000 a year
Why Ethena Labs?
- Join a forward-thinking, crypto-native company with a mission to revolutionize decentralized finance.
- Work alongside a passionate and innovative team that values collaboration and creativity.
- Enjoy a flexible, remote-friendly work environment with opportunities for growth and learning.
- If you subscribe to the mission of separating the dollar from the state, then we want to hear from you!
- We look forward to receiving your application and will be in touch after having a chance to review.
In the meantime, here are some links to more information about Ethena Labs to help you check us out:
- Website

$150k – $250kengineersoftware engineer
WorkOS is hiring a remote Software Engineer - Productivity. This is a full-time position that can be done remotely anywhere in US Timezones.
WorkOS - Building the next platform for workplace tools.

engineerremote bulgariatechnical support
HashiCorp is hiring a remote Sr. Support Engineer. This is a full-time position that can be done remotely anywhere in BUlgaria.
HashiCorp - Cloud infrastructure automation.

engineermobiledevreact native
About Us
We’re an exciting early-stage startup dedicated to empowering small business owners through innovative AI-driven tools. Our flagship product, a simple but useful mobile app for on-the-go professionals, helps turn daily chaos into organized, actionable clarity.
As we build our MVP, a mobile-first app with powerful AI-backed organization features, you’ll have the unique opportunity to directly shape both the product and the company from the ground up. If you’re passionate about delivering high-quality mobile experiences, eager to solve real-world problems, and excited by the challenge of building something meaningful, we’d love to hear from you.
What You’ll Do
End-to-End Mobile Development: Build and maintain our React Native app from the ground up using TypeScript.
Feature Implementation: Deliver the core capture → organize → act workflows with offline-first reliability and smooth, responsive UI.
UI Integration: Translate Figma designs into polished, accessible, cross-platform components.
Animations & Interactions: Create fluid, battery-friendly interactions with React Native Reanimated and Gesture Handler.
API Integration: Connect the mobile app to our backend and AI services (RESTful APIs, Google Calendar API).
Security & Storage: Implement secure storage and sensitive data handling for features like our high-security Vault.
Push & Deep Linking: Set up and manage push notifications and deep link flows.
Release Management: Handle app store submissions, TestFlight/Play testing, and OTA updates.
Collaboration: Work closely with our designer, backend engineer, and founders to bring the vision to life.
What We’re Looking For
Competencies
Strong proficiency in mobile development (minimum 3 years of professional experience), including knowledge of Kotlin/Java and Swift/Objective C.
Strong proficiency in React Native and React.
Proficient in TypeScript.
Skilled in animations & gestures using React Native Reanimated and Gesture Handler.
Solid understanding of cross-platform development for iOS and Android.
Proven ability to translate UI/UX designs from Figma into responsive, accessible interfaces.
Experience integrating RESTful APIs and third-party services (Google APIs, OAuth2).
Familiarity with secure storage, permissions handling, and basic encryption best practices.
Comfort with push notifications, deep linking, and app navigation patterns.
Proficient with Git for source control.
Familiarity with AI coding and productivity tools.
Experience
Shipped at least one production app to both the Apple App Store and Google Play Store.
Hands-on experience with mobile CI/CD tools (Expo EAS, Fastlane, or similar).
Comfortable working in an Agile development environment.
Experience building offline-first apps with local storage, queued actions, and retry logic.
Culture & Soft Skills
Excellent communication in English (written and spoken).
Proactive and solutions-oriented, able to work independently while collaborating effectively across time zones.
Committed to delivering high-quality work on time.
Excited by the idea of working in a fast-paced startup environment.
Love learning new things.
Why Join Us?
Impact: Be a key contributor in shipping our MVP and shaping a product that will directly help people succeed.
Growth: Join at an early stage with the opportunity to grow alongside the company and play a key role.
Flexibility: Remote-first culture with flexible working hours and at least 4 hours of overlap with our core team.
Who should not apply:
If you don't fit our core values of:
- Honesty and Integrity
- The Best Idea Wins
- The Users Come First
- Excellence in All You Do
Salary and compensation
$20,000 — $40,000/year
$190k – $230kengineerproduct
Runway is hiring a remote Senior Product Engineer. This is a full-time position that can be done remotely anywhere in North America.
Runway - A consumer-grade social product that reinvents how business financials are presented.
Squarespace is hiring a remote Senior Technical Writer, Developer Experience - Engineering. This is a full-time position that can be done remotely anywhere in Ireland.
Squarespace - The all-in-one solution for anyone looking to create a beautiful website.

entry-levelinternshipnon-techremote - us
Binance is looking to hire an IT Support Intern to join their team. This is an internship position that can be done remotely anywhere in the United States.
Coinbase is looking to hire a Software Engineer, Emerging Talent (USA) to join their team. This is a full-time position that can be done remotely anywhere in the United States.

$140.8k – $184kandroidengineerkotlinsoftware engineer
Omada Health is hiring a remote Software Engineer, Android. This is a full-time position that can be done remotely anywhere in the United States.
Omada Health - Inspiring and engaging people in lifelong health, one step at a time.
Ethereum Foundation is looking to hire a Data Engineer, AI and Automation to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.
Anchorage Digital is looking to hire a Masters Software Engineering Internship (AI Engineer) to join their team. This is a full-time position that can be done remotely anywhere in Portugal.

backendelasticsearchengineerfront endfull stack
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At FetLife we're looking for a Senior Full Stack Engineer to help us better serve the community.
< class="story__copy">The Job
As a Full Stack Engineer, you'll be focusing on improving our codebase to make it more performant and easier to maintain.
Currently, our platform is built as a majestic Rails monolith, using Vue.js with Typescript on the front-end, and enhanced by Rust for select services and gems.
More details about our tech stack:
- Testing is done with RSpec & Capybara
- Continuous integration and deployment are done with CircleCI & GitHub Actions
- MySQL and PostgreSQL for our main databases
- ScyllaDB for our activity feeds
- Redis for session storage, queue management, and caching
- ElasticSearch for full-text search
- DevOps using Containers orchestrated with Kubernetes and Helm
- Monitoring and alerting is done with DataDog, New Relic, and Sentry
- Infrastructure managed with Terraform
- Hosting on Google Cloud (planning to move towards bare metal)
- CDN and endpoint protection using Cloudflare and Fastly
About you
We're looking for someone who has proven experience building and maintaining large production-level Ruby on Rails applications in the past.
Ideally, you have experience:
- Working with a modern front-end framework (ideally Vue)
- Writing semantic JavaScript and (or) Typescript
- Working with Redis, MySQL or PostgreSQL
- Writing unit and integration tests using RSpec and Capybara
Additionally, since we're 100% remote, we:
- Highly value strong written communicators
- Require three hours overlap any time between 10 AM and 6 PM CET
About Us
FetLife is the largest kinky social network on this side of the Milky Way. We:
- Have over 10 million members and growing
- Grew 100% by word-of-mouth
- Serve over 3 billion requests a day
You can find our team and core values here.
Pay & Benefits
We use a standardised salary calculator for each position to ensure we are competitive, fair, and consistent. For this specific role, the rate is between $115k - $170k USD / year.
Additionally, we offer:
- Paid time off:
- 2 weeks vacation
- 5 statutory holidays (e.g. Easter & Thanksgiving)
- 2 weeks during Christmas
- 4-day workweeks during the summer months (July & August)
- Annual company retreat (e.g. Malaga, Miami, Vancouver, and Montreal)
- Annual anniversary gift (200$ USD for every year with us, e.g. 4th anniversary is $800)
- Monthly streaming music subscription reimbursement
- Fully paid maternity and paternity leave
Salary and compensation
$110,000 — $170,000/yearBenefits
🌎 Distributed team
⏰ Async
🤓 Vision insurance
🦷 Dental insurance
🚑 Medical insurance
🏖 Paid time off
📆 4 day workweek
🏔 Company retreats
🖥 Home office budget
⬜️ No whiteboard interview
👀 No monitoring system
🎅 We hire old (and young)

engineerfrontend engineerfull-timegraphqlnext.js
Morpho Labs is looking to hire a Senior Frontend Engineer to join their team. This is a full-time position that can be done remotely anywhere in GMT+0 to GMT+2 or on-site in Paris.

$166k – $227.85kengineersoftware engineer
Pulumi is hiring a remote Software Engineer - Secrets. This is a full-time position that can be done remotely anywhere in the United States.
Pulumi - Modern infrastructure as code.

full timeremote
Lucky is a next-generation crypto casino on a mission to deliver a fast, fair, and fun experience for players around the world. We’re building a modern gaming platform powered by cutting-edge backend technology and a commitment to innovation in the iGaming space.
We are a lean, product-driven team that moves fast, experiments boldly, and focuses on high-impact outcomes. If you’re excited about shaping the foundation of a global crypto product, we’d love to meet you.
Job Summary
We are looking for a highly motivated and experienced Backend Tech Lead to guide the development and scaling of our backend systems. You’ll lead a team of engineers while actively contributing to architecture decisions, writing production-grade code, and setting best practices for backend development.This role blends leadership with deep technical execution. You’ll work closely with the CTO, engineers, and product managers to build reliable, performant services that support real-time gaming at scale.
Key Responsibilities:
- Technical Leadership
- Lead and mentor backend engineers through code reviews, pair programming, and coaching- Own architecture decisions and ensure scalability, performance, and security- Establish and enforce coding standards and engineering best practices- Stay current with backend technologies and help guide our tech strategyHands-On Development:
- Write clean, efficient, and maintainable code using Node.js, TypeScript, and NestJS
- Design and build microservices, APIs, and real-time features- Debug, test, and troubleshoot complex backend issues- Conduct thorough code reviews and enforce quality standardsProject Delivery:
- Work with product managers to scope and prioritize backend work- Estimate timelines and manage sprint execution- Track technical progress, flag risks, and ensure timely deliveryDevOps Collaboration:
- Maintain and improve CI/CD pipelines
- Contribute to system reliability and observability- Participate in on-call rotations and incident responseWhat We’re Looking:
- 8+ years in backend development, preferably with experience in high-performance or iGaming systems
- Proven ability to build and scale real-time backend platforms- Strong experience working in agile environmentsTechnical Skills:
- Proficient in Node.js with TypeScript
- Deep understanding of NestJS (modular DI, WebSockets, CQRS, microservices)- Strong with Prisma ORM, BullMQ, Redis, and RabbitMQ- Skilled in designing RESTful APIs and building secure authentication flows using Passport (JWT/OAuth/local)- Comfortable with AWS services like EC2, Lambda, SQS, RDS, and S3- Hands-on experience with Docker and CI/CD pipelines (GitLab CI, Jenkins, CircleCI)- Familiar with SQL and NoSQL databasesBonus: Familiarity with tools like MaxMind GeoIP, SendGrid, Google Cloud Storage, Helmet, EJS, Winston, and Sentry
Soft Skills:
- Excellent communication and collaboration abilities
- Strong leadership and mentoring mindset- Self-driven and organized- Detail-oriented with a product-thinking mindsetEducation:
- Bachelor’s degree in Computer Science or related field (or equivalent experience)
Bonus Points:
- Experience with microservices or distributed systems
- Performance tuning and system optimization- Contributions to open-source projects- AWS Certifications- Crypto-savvy or previous experience working in the blockchain or crypto industryJoin us and help build the engine that powers the future of crypto gaming.
Apply now to be part of a product-led, fast-growing startup with global ambitions.

$176k – $220kengineergolangpythonsoftware engineer
Splice is hiring a remote Senior Software Engineer II. This is a full-time position that can be done remotely anywhere in the United States.
Splice - Building a creative ecosystem for music producers.

$156k – $168kengineerphp
Help Scout is hiring a remote Sr. PHP Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.
Help Scout - Simple customer service software and education.
Software Development Engineer (Full-stack) While this role can be 100% REMOTE, you MUST live within commuting distance to the
DMV metro area. The work is in San Antonio, TX but you will not need to travel there. Codescratch is currently seeking a self-motivated and talented Full-stack Software Developerwith database experience to join our growing and dynamic team. The ideal candidate willpossess a subset of the following skills, with a willingness to learn and grow in other areas. Thisrole involves collaborating with team members to develop and maintain high-quality softwaresolutions, ensuring comprehensive testing, and providing support in ticket creation anddocumentation. Key Responsibilities: Contribute to the development and maintenance of software applications Collaborate with team members to design, develop, and deploy high-quality software Solutions Participate in code reviews and provide constructive feedback Troubleshoot and resolve software issues Contribute to continuous improvement of development and deployment processes. Create and manage tickets in Jira Document processes and projects in Confluence Why Codescratch? Codescratch, is a leading software services company that specializes in developing innovativesolutions, driving improvements, and optimizing operations in the public and private sectors.Proven track record of success in tackling complex, large-scale challenges that demandout-of-the-box thinking and innovative approaches. Our focus is on delivering maximum value toour customers, mitigating risks and ensuring the highest quality and efficiency. We provideunprecedented mission successes through software innovations, and could not do it without ouramazing employees! As a group of software engineers that have worked together over a decade in the defenseindustry, we set out to create an organization that chose the best and left off the worst of ouremployment experiences. We decided to form a company that would focus on people and thework while setting aside bureaucracy and egos. We are a small company that focuses on ouremployees first. We are committed to reducing operational expenditures and optimizingadministrative procedures, prioritizing employee compensation over corporate infrastructureinvestment. Highlights of our benefits package: We are proud to offer a stellar 401(k) plan on day one. Codescratch contributes 15% of your earnings each pay period, on top of any contribution you choose to make. No vesting schedule, no lump sum, no gotchas! Our team members stick around because they love the company, not because of gimmicks. Contributes 12% of your rate towards your premium for healthcare, vision and dental. Flexibility - get paid for every hour that you work, even if it's over 40! Education/training allowances. We invest in you and cover the cost of certifications relevant to your job. We also reimburse some of the cost for books, audiobooks and online video courses. Basic Qualifications: Bachelors of Science in Computer Science, Computer Engineering, or a related discipline in the technical field 5+ years of related professional experience as a developer working with databases Experience with agile development methodologies Familiarity with CI/CD pipelines Familiarity with Git, Docker, ORMs, RESTful APIs, JDBC, Junit Strong problem-solving skills and attention to detail Excellent communication and collaboration abilities U.S. citizenship required Active DoD Secret Clearance Must be local or willing to relocate to the DMV Metropolitan area Preferred Skills and Experience: Proficiency in front-end development with VueJS, React, AngularJS, and NextJS Proficiency in TypeScript or JavaScript Proficiency in an OO language such as Java or Python Experience with PostgreSQL Experience with Amazon Web Services (AWS) Experience with Docker and Kubernetes for containerization Familiarity with unit testing and automated testing frameworks Proficiency in ticket creation and management using Jira Ability to create and maintain documentation in Confluence Salary Range Pay range $120,000 - $165,000 The pay range for this job level is a general estimated guideline only and not a guarantee ofcompensation or salary. Additional factors considered in extending an offer include (but are notlimited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, aswell as internal equity, alignment with market data, applicable bargaining agreement (if any), orother law.
$50000 - $74999 usdanywhere in the worldfull-time
About This Role
We are looking for a Senior Full Stack Developer with deep expertise in the Shopify ecosystem, a strong grasp of headless architecture, and experience leading enterprise-scale development initiatives. You’ll be responsible for building scalable, high-performance eCommerce solutions using Shopify (including Hydrogen/Storefront API), Gadget.dev, and headless CMS platforms like Contentful, Sanity, or Strapi.
You’ll work in close collaboration with cross-functional teams—design, product, DevOps, and QA—to architect, develop, and deploy robust eCommerce applications that push performance and scalability to new heights.
Core Responsibilities
Architecture & Development
Architect full-stack applications with Shopify as the backend and modern front-end frameworks (Next.js, Remix, React, etc.) in a headless configuration.
Lead the development of scalable, modular, and high-performance Shopify applications, with a focus on maintainability.
Develop and optimize Gadget.dev-based applications, integrating them with Shopify APIs and third-party services.
Design system architecture that can handle enterprise traffic, catalog sizes, and multi-region deployment requirements.
⚙️ Integration & Infrastructure
Implement integrations with payment gateways, ERPs, CRMs, and third-party logistics providers.
Build performant API layers using GraphQL, REST, or custom middleware, handling Shopify storefront and admin APIs.
Utilize CI/CD pipelines, Git workflows, and automated deployment tools (e.g., GitHub Actions, Vercel, or Netlify) for streamlined releases.
Collaboration & Strategy
Work closely with product managers, designers, and technical leads to define technical requirements and timelines.
Serve as a senior technical advisor to junior developers and contribute to code reviews, architecture documentation, and best practices.
Assist in conducting performance audits, A/B tests, and code optimizations for ongoing projects.
✅ Required Skills & Experience
Shopify Ecosystem
5+ years of experience developing with Shopify, including Shopify Plus, Storefront API, Admin API, and Checkout customization.
Strong understanding of Hydrogen, Oxygen, Liquid, Shopify Functions, and Shopify theme development.
Full Stack Proficiency
Front-end: React, Next.js/Remix, Tailwind CSS, TypeScript
Backend: Node.js, Express.js, serverless functions
Database: PostgreSQL, MongoDB, or Shopify-native metafields & customer objects
Experience designing GraphQL schemas and working with Apollo or Relay.
Gadget.dev & Headless CMS
Strong experience working with Gadget.dev, especially in building Shopify-integrated apps and workflow automations.
Hands-on with headless CMS platforms like Contentful, Sanity or AEM.
Experience modeling content architecture for flexibility and localization.
️ Systems Thinking & Enterprise Expertise
Ability to lead large-scale Shopify implementations across multiple brands, currencies, and localized storefronts.
Comfortable designing multi-tenant architectures, CDN caching strategies, and edge function deployments.
Soft Skills & Culture Fit
Proven track record of leadership in development teams.
Clear, proactive communicator who values documentation and async collaboration.
Comfortable mentoring other engineers and leading by example.
Passionate about eCommerce innovation and delivering elegant, user-centered solutions.
Success Metrics
On-time delivery of milestone features with high test coverage.
Achieving performance targets for Core Web Vitals and Shopify storefront speed.
Stability and scalability of deployed architecture under enterprise-grade traffic.
Developer productivity improvements through tooling, automation, and documentation.
Creative mindset with the ability to collaborate effectively with creative teams.
Why Join Us?
Dynamic Growth Opportunities: Be part of a fast-growing company where your contributions directly impact our success and your professional growth.
Innovative Culture: Work in an environment that encourages creativity, experimentation, and innovation in digital marketing.
Competitive Compensation: Enjoy a competitive salary, performance bonuses, and a comprehensive benefits package.
Remote Flexibility: Benefit from the flexibility to work from anywhere, fostering a healthy work-life balance.
Updated about 7 hours ago
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