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ClassDojo - Build wonderful classroom communities with parents and students.

About Us

Winna.com is an innovative crypto casino, pushing the boundaries of online gaming with cutting-edge technology and a seamless user experience. We are building a high-performance, scalable, and secure platform to serve a growing number of players worldwide. As we scale, we are looking for talented iniduals who want to shape the future of crypto gaming with us.

The Role

We are seeking a Back-End Developer to build and optimize the foundation of our gaming platform. You will work on API development, database management, and performance optimization while ensuring security and scalability. This role is ideal for someone who enjoys working on high-load systems, solving complex challenges, and driving innovation in a dynamic, fast-paced environment.

What We Are Looking For

• We need a developer with a strong technical background who is passionate about creating scalable and efficient backend systems.
• Experience in the iGaming industry is important—you should be familiar with the mechanics and challenges of online casinos, player transactions, and gaming operations.
• A strong understanding of mathematical logic and calculations is valuable, as you will be working with gaming logic and odds calculations.
• You should be comfortable working with real-time applications and high-load environments.

Key Responsibilities

• Design, develop, and maintain APIs for our casino platform
• Manage and optimize databases for scalability and efficiency
• Ensure high performance and low latency in a high-load environment
• Implement robust security measures to protect user data and transactions
• Develop and integrate new functionalities into our platform
• Work closely with the front-end, DevOps, and external teams to ensure seamless system integration
• Optimize and fine-tune gaming logic, mathematical models, and calculations to ensure accurate gameplay mechanics, as well as support real-time dashboard KPIs and data visualizations

Skills & Attributes

• Tech stack: Strong experience with Node.js, plus expertise in SQL, Redis, Web3, AWS is a plus
• Understanding of high-load systems and real-time data processing
• Experience designing and optimizing database structures
• Knowledge of cryptographic principles and security best practices
• Strong problem-solving skills and a passion for mathematical logic and calculations
• Familiarity with iGaming industry mechanics is a must—understanding game engines, odds calculations, and player transaction flows
• Ability to work independently and collaboratively with a distributed team
• Experience integrating blockchain/Web3 technologies is beneficial

Why Winna?

• Work on an innovative crypto gaming platform with cutting-edge technology
• The opportunity to shape the core architecture of a fast-growing casino platform
• A dynamic, agile work environment with direct impact on the product
• Flexible work options: Remote, Hybrid, or On-site in Berlin
• A talented, passionate team with a startup mindset and flat hierarchies
• Competitive compensation based on experience and expertise

How to Apply

If you’re excited about this opportunity, we’d love to hear from you!

Send us your GitHub, CV, or a short intro about your experience.

We look forward to meeting you!

"

As an AI Engineer at Eloquent AI, you will be at the forefront of building, deploying, and optimizing enterprise-grade AI agents that handle high-stakes conversations. You’ll work directly with software engineers, deep learning experts and AI researchers to design intelligent agents that understand, take action, and deliver real business impact.

This role requires a mix of software development, AI integration, and problem-solving skills, with the ability to customize, optimize, and scale AI models for real-world enterprise applications. If you're passionate about LLMs, conversational AI, and solving last-mile AI adoption challenges, this role is for you.

You will:

* Build, deploy, and optimize AI agents that engage in enterprise-grade conversations.

Requirements:

* 3+ years of experience in software development or AI engineering in a production environment.

Bonus Points If…

* You have experience with prompt engineering, parameter-efficient fine-tuning (PEFT), retrieval-augmented generation (RAG), reinforcement learning for LLMs.

",

"

The Role

We’re looking for a Founding Engineer to help us architect and scale the future of healthcare automation. You'll be an early technical leader, working closely with the founders to ship products end-to-end, from AI voice agents to insurance verification and EHR integrations.

This is not just a job, it’s a chance to build something meaningful from the ground up.

What You'll Do

* Own large parts of the stack: AI-driven frontend, backend infrastructure, EHR integrations

We’d Love If You Have

* 2+ years of experience at a fast-paced startup

Why Join Us

* Meaningful equity and early ownership

Sound like you? Let’s talk!!!!

",

The Opportunity

As a Frontend Engineer on the Nascent engineering team, you will play a critical role in designing and building the user interfaces that power our trading platform. From creating elegant, high-performance UI in React to collaborating across the stack, you’ll help shape products that enable our team to move fast and operate at their best. You’ll contribute to a lean, agile development team—owning components end to end, bringing clarity to ambiguous problems, and pushing the boundaries of what’s possible through creative solutions and sharp execution.

You will thrive in this role if you’re a resourceful builder who loves solving complex challenges and turning ideas into intuitive, high-impact interfaces. You enjoy connecting the dots between teams, and you move fluidly between starting bold new projects and refining existing ones. You’re excited by the future of crypto and trading, supercharge your workflows with LLM tools, and care deeply about both speed and quality. If you’re curious, adaptable, and ready to help shape the next phase of our platform, we’d love to work with you.

Responsibilities

• Design and build world-class UI for the next phase of our trading platform, enabling our team to do their best work
• Ensure resilience and stability through quality code reviews, unit, regression and user acceptance testing
• Be an integral contributor to a lean agile development team, fostering a culture of continuous improvement.
• Take full ownership of multiple components including design, implementation, and maintenance
• Operate independently and in unison with a team to deliver code updates
• Contribute creative ideas and novel approaches to product and engineering challenges, pushing the boundaries of what’s possible.
• Bring clarity and structure to ambiguous problems, identifying key requirements and proposing actionable solutions.

About you

• You crave autonomy and agency to deliver against a shared vision and find real joy in providing solutions to complex problems.
• You enjoy connecting the dots between teams, valuing strong communication and collaboration.
• You are curious about the future of crypto, trading and the financial world as a whole.
• You love using LLM tools in your daily workflows.
• You are as excited by starting a project as completing, maintaining, and continually optimizing it.
• You are resourceful and can toe the line between moving fast and breaking things and moving methodically to get things right the first time.
• You are extremely agile and have a strong ability to adapt quickly to evolving requirements.
• You are an avid learner and always keeping on top of the latest technologies.

Preferred experience

• 2-5 years of experience in Front-end development, ideally using React, Angular or VueJS. Bonus if you have experience with and/or interest in learning Rust.
• Previous experience in creating visually appealing and intuitive user interfaces, ideally for complex financial applications.
• UX Design Skills with experience in tooling such as InVision, Figma, Balsamiq.
• Have built trading and/or financial applications in the past (through experience, hobby or project work).

About Nascent…

Founded in 2020, Nascent exists to build, expand, and capture opportunity, in open markets and permissionless technologies. Building from a base of permanent capital, we deploy assets across a range of both liquid and long-term strategies that ensure we are among the most active users of the open financial system we are helping to build. We’ve made venture investments in 100+ early-stage teams that we believe have the potential to create substantive change, expand boundaries, and find new horizons. We are consistently on the hunt for the most competitive and curious minds exploring the edges of the crypto ecosystem and leverage our hyper flexible structure to accelerate ideas into fully deployed strategies.

Our Team & Culture

At Nascent, we are an interdisciplinary team of investors, builders & creators, capable of achieving more together than we can as iniduals. We offer the opportunity to contribute to building the future global economic system with a world-class team and culture that pairs the freedom to explore, experiment & play with a competitive drive to win. We invest in our people by providing the autonomy to build, coupled with accountability & honest feedback to help learn, grow, perform & win. Our distributed team understands the value of in-person time—we host two team retreats per year and encourage team members to come together for more frequent in-person work.

Principles that drive our team & work

• Compete to win
• Explore, experiment, play
• Always be building
• Seek and speak truth
• Own your shit.

What We Offer

At Nascent, we offer a competitive total compensation package heavily weighted toward bonus, ensuring that when we perform at our best and the firm wins we all win.

• The opportunity to learn, experiment and build in an entrepreneurial environment
• Remote and distributed working environment
• Comprehensive health benefits package including dental, vision, and life
• 16 weeks fully paid parental leave & supported return to work
• Home office setup and stipend or coworking space and wellness stipend
• Retirement plan matching contributions
• Open vacation policy as well as flexible work hours and location
• Team activities and bi-annual in-person team retreats

We are an equal opportunity employer and celebrate ersity and differences of perspectives. We do not discriminate on the basis of any status, inclusive of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

👋 GM

We are OpenCover — our mission is to keep the world safe onchain.

OpenCover operates at the intersection of blockchain security and insurance. Working in tandem with leading industry players, we protect iniduals, businesses and institutions against onchain risks such as malicious transactions, smart contract exploits and depegs.

Founded by Y Combinator alums, our team is backed by Tier 1 investors including Lloyd’s of London Lab.

Want to join a high-performance, high-integrity team taking onchain safety to the next level? Read on.

🚀 Your role

You would join the founding team to develop core backend infrastructure working closely with our CTO. Your role would focus on expanding the first transaction security layer to insure billions in value. The work involves collaborating with top protocols and industry players to prevent incidents like the ByBit hack from ever happening again.

Areas you’ll work on

• Soft auditing and semantic modelling of leading protocol designs and functions.
• Designing, implementing and backtesting transaction validation checks.
• Developing asset pricing and transaction risk models.
• Tracking exposure and other insurance metrics in real-time.
• Iterating and expanding our API based on customer feedback.
• Staying up to date with industry trends including EIPs and security incidents.

You’d be a great fit if

• You’re a generalist who quickly embraces new technologies and challenges with a passion for building products from the ground up in a collaborative, tight-knit team.
• You go all out to use your knowledge and work well autonomously but know when to reach out for support.
• You have 5+ years of full-time experience developing and shipping backend services with Node.js and TypeScript.
• You’ve designed, implemented and/or audited smart contracts on EVM-compatible chains and have hands-on experience using DeFi.
• You’re familiar with PostgreSQL, messaging brokers, AWS/GCP, Docker, Bash and Linux.
• You are constantly improving your tech stack and use AI tools to accelerate development.

🙌 Our offer

• Put your dent in the universe: build products for and with some of the largest players across Web3 and TradFi.
• Directly impact company trajectory and play a key role in driving onchain adoption.
• Work IRL with the team at Lloyd’s of London 1–5 days a week— your choice!
• Flexible hours with 28 days of paid holiday plus company closure days.
• Competitive compensation based on experience + 0.1–0.5% equity.
• The equipment you need to do your best work + $1,000 for well-being and personal development each year.
• Company-paid travel to events and conferences, if that’s your thing!

Ready to apply?

Head to opencover.com/apply/bbe and get shortlisted in 10 minutes or less.

"

At Oway, we're redefining how businesses move freight by pioneering a rideshare model for shipping pallets. We’re looking for exceptional engineering interns who thrive on autonomy, speed, and impact. You’ll have direct involvement in building and scaling key systems—like real-time pricing models, intelligent vehicle routing, user engagement tools, and high-volume payment infrastructure.

This isn’t a checkbox internship. We want people who build fast, think creatively, and are excited to help shape a product that’s transforming commerce in America. If you're a strong inidual contributor who can run with complex tasks and you love shipping code that impacts how physical businesses work with each other—come work with us.

Even if you don’t match every bullet on a traditional job description, we still want to hear from you.

",

Clearpool is the leading decentralized finance credit marketplace, preparing to launch Ozean — the blockchain for RWA yield. Clearpool’s permissionless protocol enables institutions to raise unsecured liquidity directly from DeFi markets, while a separate fully permissioned platform, Clearpool Prime, further meets the compliance needs for wholesale borrowing and lending of digital assets by institutional market participants.

Launched in March 2022, Clearpool has originated over US$620 million in loans with a growing user base spanning both crypto and TradFi institutions such as Wintermute, Jane Street, Fasanara Digital, CoinShares, and others. The protocol launched on the Ethereum mainnet in March 2022, followed by the expansions to Polygon PoS, Polygon zkEVM, Optimism, Mantle Network, Flare Network, Base and Arbitrum. Clearpool is currently building Ozean, the first blockchain for RWA yield built on and supported by Optimism.

More info

Job Overview:

We are seeking a highly skilled and experienced Senior Smart contract / Rollup Engineering Lead to join our dynamic team. The ideal candidate will have a strong background in Solidity/EVM Smart contracts with a keen interest in the evolving Web3 and RWA landscape for DeFi. This role primarily involves creating, designing, and implementing smart contracts, leading and managing the rollup infrastructure (Layerzero OFT, Hyperlane, Optimism L2 stack).

Key Responsibilities:

• Must be open to working
• Has contracts on the Ethereum/EVM that have handled non-trivial amounts of funds
• Develop libraries and code to interact with smart contracts and Node backends via NodeJS
• Writing, testing, and enhancing Solidity/EVM smart contracts
• Experience with foundry and testing with Tenderly
• Proven experience with Solidity security audits & working with auditors

Qualifications:

• Fluent in English communication
• Crypto Native
• Comfortable working in the fast pace and volatility of early-stage startups
• Strong understanding of the L2 Rollups and its ecosystem, upcoming technology, and application-specific blockchains
• Excellent problem-solving skills and attention to detail
• Strong communication and teamwork skills
• 4-5+ years of hands-on experience in backend and smart contract development
• Experience with building different DeFi products is ideal

Extras:

• Past experience in contributing to or maintaining open-source projects

Pay/Tokens:

• Salary Range $100,000-$120,000 USD annually
• Competitive token incentives plan
• Paid in USD stables. Payment and tokens are to be discussed based on qualifications, experience.

Role

• Setup, maintain and monitor fleets of blockchain nodes for Nirvana’s global customer base.
• Build and maintain scaleable and flexible automations for running blockchain nodes and internal monitoring services.
• Set and maintain the best-in-class infrastructure practices.
• Collaborate with cross-functional teams to align technical solutions with business goals and client needs.

Requirements

• Fluent in English
• In a time zone between PT to ET (UTC-8 to UTC-5)
• Proficient in scripting (i.e. Bash) and automation frameworks (e.g. Ansible, Terraform, Puppet, Chef)
• 4+ years of proven experience in DevOps or Site Reliability Engineering roles.
• Experience managing and optimizing bare-metal servers.
• At least 1 year of professional experience in creating and maintaining blockchain RPC nodes (e.g. Ethereum, Arbitrum, Solana etc.)
• Knowledgeable in deploying services reliably using tools like GitHub Actions, CircleCI, TravisCI, or Jenkins.
• Proficient with monitoring and logging tools (e.g, Prometheus, Grafana etc).
• Experience with Git-based systems for code and configuration management.
• Knowledge of various blockchain protocols and standards.
• Awareness of cybersecurity practices relevant to blockchain and distributed systems.

Nice to have

• Experience in creating automation tasks and internal tooling using Golang.
• Active contributions to relevant open source blockchain projects.
• Certifications for cloud providers, Kubernetes, or security certifications.
• Familiarity with a variety of blockchain environments.
• 1 year of experience in a technical leadership role.

At Edge & Node, we’re focused on building The Graph, a decentralized protocol for accessing and organizing the world’s knowledge and information. Subgraphs, a core technology developed by Edge & Node to access blockchain data, are widely used across web3 to power decentralized applications.

We’re a tight-knit, efficient team with a bias for action and a strong sense of ownership. Our teams have autonomy, low ego, and are trusted to drive projects end to end. We care deeply about building infrastructure for web3 use cases and collaborate across disciplines to make that happen. If you’re passionate about infrastructure that has a real impact on our users, enjoy solving hard problems, and thrive in a fast-paced environment, you’ll feel right at home.

The Engineering Operations team, including Site Reliability, works closely with engineering teams across Edge & Node to ensure the services we operate are reliable, performant, predictable, and secure. We are on a mission to take our service delivery to the next level.

About the Role

We’re looking for a Tech Lead, Site Reliability Engineering (SRE) to help guide the future of infrastructure and reliability at Edge & Node within The Graph ecosystem. In this role, you’ll be both a technical leader and hands-on contributor, driving industry best practices in reliability, infrastructure, observability, and operational excellence while collaborating cross-functionally to optimize and secure our systems.

You’ll play a critical role in setting the technical direction for the team—shaping how we build, scale, and support our services—while also staying actively involved in the day-to-day work. This is a role for someone who’s passionate about infrastructure and security, has stellar interpersonal skills, and is excited to lead us toward a more scalable, observable, and resilient future. You will partner closely with the team’s manager as well as stakeholders across the engineering organization.

What You’ll Do

• Lead by example as a hands-on technical contributor, participating in on-call rotations, incident response, and the day-to-day work of the SRE team
• Partner with engineering and product leadership to shape roadmaps, define team priorities, and plan work that improves reliability, performance, and scalability across the stack
• Team with and support other SREs, leveraging your leadership and soft skills to foster a culture of continuous learning, blameless retrospectives, and technical excellence
• Own the incident lifecycle, including root cause analysis and follow-up remediation, and work to make our systems increasingly self-healing
• Drive SRE team strategy, advocating for industry best practices, standardization, and secure and optimized infrastructure
• Architect and improve core infrastructure services, with an eye toward high availability, fault tolerance, performance, and end-to-end observability
• Work across teams to challenge assumptions, fundamentally overhaul our systems, and improve documentation
• Collaborate with external partners and vendors as needed to ensure the health of critical services

What We’re Looking For

• Proven experience as a senior or lead SRE or devops engineer, ideally having led large-scale reliability initiatives or infrastructure transformation projects
• Strong project or technical leadership skills, with a track record of guiding teammates and setting technical direction while still remaining hands-on
• Deep knowledge of the SRE/devops domain, including incident response, security awareness, maintaining SLAs and uptime guarantees, observability, supporting internal development teams, project and capacity planning, and/or system architecture
• Experience with both cloud and on-prem core infrastructure, ideally with Google Cloud Platform (GCP), bare metal infra, and kubernetes (or similar orchestration tools)
• Fluency in infrastructure as code, Terraform, automation tooling, CI/CD pipelines, and system monitoring solutions such as Grafana
• Excellent interpersonal, leadership, and communication skills, with the ability to align stakeholders and motivate and unblock team members
• Experience in web3, crypto, or blockchain is a plus (but not required)

About The Graph

The Graph is the indexing and query layer of the decentralized internet. As the first open data marketplace to introduce and standardize subgraphs, The Graph is a flagship solution for accessing blockchain data across web3.

Since launching in 2018, tens of thousands of developers have built subgraphs to power dapps across 90+ blockchains. As demand for web3 data grows, The Graph is evolving to support a broader range of data services and query languages, expanding what’s possible with decentralized infrastructure—now and in the future.

Discover more about how The Graph is shaping the future of decentralized physical infrastructure networks (DePIN) by following The Graph on Discord.

As a Protocol Research Specialist at Raiku, you will be at the forefront of protocol research and development, bridging the gap between technical innovation and market implementation. You’ll be crucial in monitoring and influencing protocol developments while translating complex technical capabilities into compelling use cases for our target markets. This position requires a unique blend of technical expertise, market understanding, and communication skills.

About Us

We believe Raiku is reimagining Solana’s consensus ecosystem by developing software that directly connects validators with purpose-built execution environments. We’re building institutional-grade infrastructure that delivers unprecedented performance, guaranteed transaction inclusion, and deterministic settlement for the next generation of internet-native applications. We unlock radical bandwidth and latency improvements by shifting Solana’s focus to state verification.

Core Responsibilities

Protocol Research & Development

• Monitor and analyse Solana protocol changes (SIMDs) and their impact on Raiku’s infrastructure
• Drive Raiku’s protocol development by drafting and advocating for strategic SIMDs
• Host technical workshops with the team on relevant SIMDs and architectural changes to the network.

Product & Commercial

• Create technical use cases and system diagrams showcasing Raiku’s infrastructure capabilities.
• Support commercial discussions with partners and clients
• Transform technical capabilities into clear value propositions for target sectors
• Bridge the gap between technical capabilities and commercial opportunities

Technical Communication & Writing

• Produce technically accurate content for marketing and educational purposes.
• Represent Raiku in technical discussions across public forums
• Collaborate with the team on technical documentation and presentations
• Contribute to the company’s thought leadership in the Solana ecosystem

What You’ll Bring

• Bachelor’s degree or higher in Computer Science, Engineering, or related technical field
• Proven track record of writing in-depth technical articles mainly focused on blockchain protocol architecture and improvement proposals
• Ability to effectively bridge business requirements with technical specifications
• Deep understanding of blockchain protocols, particularly Solana’s architecture and ecosystem
• Experience with protocol development and improvement proposals
• Outstanding technical writing and documentation skills
• Proven ability to translate complex technical concepts into clear, business-focused use cases
• Excellent communication skills for both technical and non-technical audiences
• Track record of working independently while collaborating effectively with cross-functional teams

Preferred Qualifications

• Strong stakeholder management skills with experience in client-facing roles
• Familiarity with Solana’s governance and improvement proposal process
• Experience in product development or technical sales
• Active participation in blockchain technical communities

Benefits

• Opportunity to shape the future of Solana’s infrastructure
• Competitive compensation package, including token allocation
• Remote-first work environment
• A one-off allowance upon joining to set up a home office
• Professional development opportunities
• Chance to work with cutting-edge technology and world-class engineers

Webflow is hiring a remote Senior Software Engineer, Webflow Labs. This is a full-time position that can be done remotely anywhere in Canada or the United States.

Webflow - Responsive web design tool, CMS, and hosting platform.

Gremlin is hiring a remote Senior Backend Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Gremlin - Helps engineers build resilient systems using our control plane & API.

Nimbus is a research team that focuses on developing an Ethereum client and library. We believe that the largest deployment of Ethereum will potentially be on embedded systems and Nimbus is designed to perform well on embedded, mobile and generally resource-restricted devices.

Building the stack from the ground up, we’re translating the latest Ethereum research into practical, performant and reusable libraries to provide a fertile exploration ground for further R&D.

Check out our latest update!

The role:

We’re looking for an experienced Ethereum Validator Operations Lead to help us run our staking operations smoothly and efficiently. This role involves working with Ethereum node operations, staking mechanisms, and DeFi analytics to drive growth and profitability.

Responsibilities:

Prepare for upcoming updates:

• Stay on top of important updates to the Ethereum network, such as the Pectra update.
• Assess how these updates will affect our operations and make any necessary changes.

Node operations and DeFi:

• Oversee the technical aspects of our Ethereum node operations to ensure they’re running smoothly and efficiently.
• Use your knowledge of DeFi protocols, particularly Lido, to optimise our staking strategies.

Expand and grow staking operations:

• Explore opportunities to expand our staking operations beyond Lido, including working with other protocols and institutional partners.
• Balance growth with the continued support and improvement of our existing Lido operations.

Asset and portfolio management:

• Strategically manage the assets we’ve earned from staking operations, looking for ways to grow and ersify them.
• Analyze the market to inform our portfolio decisions.

Optimize operations and monitoring:

• Work with our Insights group to set up monitoring tools to track our staking operations’ performance and profitability.
• Continuously look for ways to improve our infrastructure and operations to reduce costs and increase profitability.

Maximize revenue:

• Find ways to capture private order flows and develop solutions to increase revenue.
• Identify and capitalise on other opportunities to enhance our revenue streams.

Reduce costs:

• Lead efforts to minimise operational costs, focusing on efficient resource allocation, hardware, and personnel.

Requirements:

• Required professional experience in a similar role within the Ethereum/DeFi ecosystem, with a focus on staking operations and growth strategies.
• Strong understanding of Ethereum, node operations, and staking mechanisms.
• Proven experience in DevOps practices, infrastructure optimisation, and monitoring solutions.
• Background in DeFi, particularly with Lido, and the ability to work with other staking protocols.

Hiring Process:

• Interview with our People Ops team;
• Two or three interviews with Nimbus team members & the venture studio, the Institute of Free Technology.

[The steps may change along the way if we see it makes sense to adapt the interview stages, so please consider the above as a guideline. We’re looking for you to join our team as soon as possible].

Bonus Points:

• Experience with MEV capture solutions.
• Familiarity with institutional staking operations and partnerships.
• Knowledge of portfolio management principles and asset ersification strategies in the crypto space.

Compensation:

We are happy to pay in any mix of fiat/crypto.

Matter Labs is looking to hire a Staff Engineer (Cryptography) to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Wikimedia Foundation is hiring a remote Director of Engineering, MediaWiki. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Wikimedia Foundation - The non-profit that operates Wikipedia.

Twilio is hiring a remote Developer Evangelist. This is a full-time position that can be done remotely anywhere in Australia.

Twilio - Build the future of communications.

Apollo is hiring a remote Senior Data Engineer. This is a full-time position that can be done remotely anywhere in Poland.

Apollo - Apollo is the all-in-one sales intelligence platform.

Discord is hiring a remote Senior Data Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Discord - The easiest way to talk over voice, video, and text.

* This is an opportunity to join our team of top-notch software engineers working closely together on interesting projects for our clients. This position is fully remote (indefinitely). **Emergent Software is looking for a senior software engineer who is a smart, passionate, and curious problem solver with experience using the Microsoft stack to solve business problems. A qualified candidate is a full stack software developer with advanced knowledge of C# and .NET and experience leading software development projects. This 100% remote position is for self-starters with good communication skills, work ethic, and the ability to participate in all aspects of the agile software development life cycle.Highlights & Benefits of working at Emergent Software Work closely with other talented engineers and team members. Our vetting process means you can count on your team members to know what they are talking about.* Work from home or work remotely from anywhere you want* Flexible work schedule meaning you can work regular hours or choose weekends and evenings* Work-life balance is essential and highly valued at Emergent Software. If you choose to work more than 40 hours, you’ll be compensated for the extra work!* Work on interesting projects solving complex business problems with custom software.* 100 hours per year to focus on your professional development. We invest in your growth!* Profit sharing bonus means as we’re successful, you’re successful* Excellent benefits package including medical insurance, dental, vision, 401(k) matching, FSA, disability, life insurance, and paid parental leaveTypical Tech Stack* C# and .NET (latest versions)* Blazor or React (JS or TypeScript)* Azure SQL* Azure PaaS (App Services, Blob Storage, Service Bus, etc.)* Azure DevOps for CI/CD* Umbraco, Sitecore, or Contentful (when CMS is required)Primary Duties* Solve client needs by building new custom software, enhancements, bug fixes, or consulting.* Work on a full scrum team contributing new code and reviewing pull requests on a large enterprise scale software project.* Or lead mid-sized software development projects from start to finish balancing work from multiple projects simultaneously.* Participate in technical requirements gathering, technology selection, data modeling, Azure infrastructure design, and DevOps & CI/CD process design with guidance from other technical and architecture experts.* Architect & develop new applications and features using industry standard best practices.* Meet with clients to craft technology solutions that meet their business needs and estimate the effort required to deliver.* Collaborate with other software developers on an agile development team.* Provide code feedback to other developers through pull request reviews.* Share your knowledge at regular talk shop and lunch & learn sessions to help build a stronger team.* Other related duties as assigned by your manager.Required Qualifications* Advanced experience with Microsoft stack web development (C#, .NET, SQL Server, Azure, JavaScript, HTML, CSS)* Competence in at least four areas in the full stack with advanced experience in at least one:1. Backend development (data access, services, MVC, APIs)2. Frontend development (HTML, CSS, JavaScript)3. JavaScript frameworks (React, Vue.js, Angular)4. Database design and development (data modeling, optimization, T-SQL)5. Infrastructure (DevOps, CI/CD, source control, Azure)* Knowledge of good architectural patterns for writing scalable and maintainable software* Proven success leading projects from start to finish* Strong technical and non-technical communication skills, both written and verbal* Comfortable speaking to clients* Ability to estimate tasks effectively and accurately* Ability to gather and write strong requirements based on client’s business objectivesNice to Have Experience* Previous consulting experience* Working directly with customer teams of various sizes* Blazor* React or similar (e.g. Angular, Vue.JS)* Content management systems (e.g. Sitecore, Umbraco, Contentful)* Microsoft Azure or similar (AWS, Google Cloud)* Cross-platform mobile app development (e.g. Xamarin, React Native)* Other programming languages & technologies (e.g. Node.JS, PostgreSQL, Ruby, PHP)Our Vetting ProcessAt Emergent Software, we work hard to find the best software engineers capable of developing high quality software for our clients. If you think you’re one of those, please understand that the effort put into this by people like yourself helps us be successful in surrounding you with other top-notch engineers. Here are the steps of our vetting process for this position:* Application (5 minutes)* Online Assessment & Short Coding Test  (50-70 minutes)* Initial Phone Interview (30-45 minutes)* At-Home Coding Exercise (3-4 hours)* Technical Interview (60-90 minutes)* Job Offer!Benefits Package Details* Medical Insurance: up to 80% of your monthly medical premium (HSA options available)* HSA Contribution: up to $144/month* Dental & Vision Insurance: up to 50% of your monthly dental and vision premium costs* 401(k) plan: company match up to 4% of salary* Profit sharing bonus: up to 15% of salary paid quarterly* Extra compensation: get paid extra for work over 40 hours/week* Employee referral & customer referral bonuses* Flex Spending Account (FSA) for Dependent Care & Healthcare Costs* Dependent Care FSA Contribution: $90/month* Short Term Disability: $500/week for 12 weeks* Long Term Disability: up to $6,000/month* Group term life and AD&D insurance: $50k* PTO, standard holidays, 2 floating holidays* Paid parental leave: 2 weeks* Staff development program: 100 hours/year plus training costs About Emergent SoftwareEmergent Software is a fast-growing software development, cloud consulting, and data engineering company serving clients across the country. We are regularly adding to our team of talented software engineers, cloud architects, data engineers, UX designers, technical product owners and more who can help us deliver high quality services for our clients.We are a remote-first companySince our inception, we've embraced a remote-friendly culture, promoting work flexibility beyond the norm. When the pandemic struck in 2020, our transition to fully remote work was seamless—just a matter of cleaning out the fridge. Recognizing an opportunity, we adopted a remote-first approach and began hiring talent from anywhere. We continue to offer our signature Minnesota-nice, Midwest-friendly attitude, ensuring everyone feels valued, whether or not they're familiar with the skyway system.Your career grows with usWorking with talented engineers on interesting projects creates an engaging environment for software development enthusiasts. By working directly with our experienced team, participating in our staff development program, and solving complex problems across a variety of projects, you’ll find numerous opportunities for long-term career growth.At Emergent Software, your ideas will be heard, you will grow exponentially as a master of your craft, and you will enjoy working other dedicated team members to deliver software solutions for our clients.Check out what others sayVisit our Glassdoor page to discover how employees enjoy our remote working structure, flexible hours, profit sharing program, and more!#EmergentSoftwareIn this role, you will lead the technical delivery of mid-sized development projects with the goal of solving our clients' business problems with custom software solutions. See the job description for requirements. #Salary and compensation

Uniswap is looking to hire an Application Security Engineer to join their team. This is a full-time position that is remote or can be based in Brooklyn NY.

"

About AfterQuery:

AfterQuery empower foundational AI labs, enterprises, and startups by providing high-quality human-generated datasets that are essential for fine-tuning more capable, refined, and reliable AI systems. We are on the forefront of creating the most complex data infrastructure to capture the most useful data for our major clients. We have raised our most recent round from BoxGroup, YC and a group of strategic angels that will push us to be at the forefront of the industry. 

About the role:

As our first founding engineer, you’ll be critical in creating data infrastructure that will be shaping the future development of frontier models. You will be one of our first hires, and will get a lot of responsibility, owning entire projects end-to-end – meaning you can see your impact instantly. 

What You’ll Do

* Build and scale complex data capturing workflows across web (Next.js) and desktop (Python)

What We’re Looking For

* At least 1-2 previous internships in front-end / full-stack development

Why Join?

* Massive Opportunity: We were one of the fastest growing YC companies in our batch, and we believe we can be one of the fastest growing YC companies of all time 

",

Join Tether and Shape the Future of Digital Finance

At Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction.

Innovate with Tether

Tether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.

But that’s just the beginning:Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-erse facilities.

Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.

Tether Education: Democratizing access to top-tier digital learning, we empower iniduals to thrive in the digital and gig economies, driving global growth and opportunity.

Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways.

Why Join Us?

Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.

Are you ready to be part of the future?

About the job

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

Job requirements

• 6 years of experience working with Nodejs/JavaScript.
• Familiar with microservices architecture
• Have actively participated in the development of a complex platform
• Familiar with Peer-to-Peer technologies
• Good experience in interacting with databases (MySQL, MongoDB)
• Ability to quickly learn new technologies
• Good understanding of security practices

Nice to have

• Experience with blockchain integration
• Comfortable with high-availability concepts
• Ruby, Rust or C++ skills are a plus
• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Chess.com is hiring a remote Senior Frontend Engineer. This is a full-time position that can be done remotely anywhere in United States, Spain, Serbia, United Kingdom or Canada.

Chess.com - The world's largest chess community.

About CoW DAO

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

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

You’ll be joining the team overseeing the design, monitoring, and enhancement of the CoW Protocol’s solver competition. As the pioneer in intent-based trading, this competition has attracted top players in the field. Building strong relationships between solver teams (those responsible for executing trades onchain) and our core team is vital for the protocol’s growth.

Your role involves providing technical support to solver teams, identifying challenges they face, and collaborating with our core team to enhance the competition. You’ll also develop essential components for monitoring the competition, ensuring compliance and user protection. This journey will deepen your understanding of blockchain intents and our batch-auctions-based approach, exposing you to valuable data for insightful analysis. Ultimately, you’ll play a crucial role in ensuring the CoW Protocol’s solver competition operates effectively, in line with the CoW DAO’s principles of fairness, safety, and decentralization.

What you’ll do

• Provide technical support to solver teams; keeping them updated, gathering their input, and troubleshooting any issues that arise
• Dive deep into the competition dynamics, understanding the needs of solvers, and crafting tools to enhance competition monitoring
• Engage in various implementation tasks for the solver competition, like setting up rewards systems, managing token balances, and refining price data feeds
• Apply data analysis techniques to gain insights on the behavior of both our users and solvers, and design metrics to evaluate how strong our trading mechanism is
• Explore the fundamental Game Theory principles guiding the competition’s mechanics and rules
• Help towards the further decentralization of the solver competition

Who you are

• You’re skilled in coding, especially in Python, and familiarity with Rust is a bonus
• You’re proficient in SQL and comfortable navigating databases
• You’re intrigued by the Game Theory principles driving the mechanics of the solver competition
• You’re passionate about blockchain technology and advocate for a decentralized future in digital currencies
• You thrive on tackling complex problems, utilizing a range of tools, from algorithms to data analysis, to find effective solutions
• You enjoy collaborating with multiple teams, communicating openly to grasp their challenges and work together towards solutions
• You’re eager to develop a erse skill set, delving deep into the blockchain technology supply chain and understanding the interactions among various entities, with a focus on the Ethereum blockchain

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

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.

Description

Patchstack Is Hiring a Senior Backend Developer (PHP/Laravel). This is a remote role but you must be located in EEST +/- 2.

Do you have extensive previous experience with PHP, Laravel and with tools such as PHPCS and PHPStan? Would you be excited to make millions of web applications more secure? Are you excited to work in a full-remote globally distributed company?

Patchstack is looking for a Backend Developer who has personal interest in web security and who can help us build modern web-based PHP applications with Laravel.

Patchstack is a cyber security company helping companies and software developers to identify & patch vulnerabilities in open-source code. We have a strong community focus with our own gamified bug bounty program called Patchstack Alliance.

Most importantly, we’re looking for a full-time team member who is an excellent communicator can grow with the rest of the team.

What we do:

• We provide a SaaS solution to detect and virtually patch plugin vulnerabilities.
• We run a community-driven bug bounty platform (Patchstack Alliance) to nurture a community of independent security researchers behind the WordPress ecosystem.
• We maintain an open and free WordPress vulnerability database
• We provide professional code review and security auditing to WordPress plugins 

Who are we looking for?

We’re looking for a self-disciplined professional with excellent communication skills who is fluent in the English language.

You’ll be working in a fast-paced startup environment where everybody is involved in planning the direction and growth of the company.

While we provide a lot of personal freedom, we’re looking for a solution-oriented person who is not afraid of challenges and is also happy to work on tasks that might not fall into everyday responsibilities.

Day-to-day tasks include:

• Develop web-based PHP applications using Laravel
• Refactor existing code to meet new standards and features (PHP 8)
• Write unit tests and document features and processes
• Coordinate with other members of the team and communicate on the status of your tasks

Requirements

• Timezone: EEST (+/- 2 hours)
• PHP, Laravel
• Familiar with tools such as PHPCS, PHPStan
• Good understanding of HTML, CSS, JavaScript
• SQL and the ability to write performant queries
• SQL schema design, normalization
• Understanding of MVC frameworks and SPA
• Version control such as git
• Ability to write clean code that is also reusable
• A focus on security and performance
• Fluent English in both speaking and writing
• Outstanding communication skills

Would be helpful:

• Good understanding of Vue.js, NuxtJS, AWS, Python
• Previous experience working as a developer
• Previous experience working in a remote team
• Knowledge about WordPress and other PHP-based content management systems
• Industry certifications

Benefits

• Highly impactful work
• No corporate environment
• Paid training for work-related personal development
• Paid vacations (35 days a year)
• Full-time telecommuting in a globally distributed team
• Co-working space membership or WFH equipment for home-office
• Fitness club or a local gym membership
• Competitive salary 
• Awesome team members!

The Company

SimplyAnalytics is a powerful spatial analytics and data visualization application used by thousands of business, marketing, and social science researchers in the United States and Canada. It comes pre-packaged with 200,000+ data variables and allows our users to create maps, charts, tabular reports, and crosstabs. We are passionate about creating outstanding software, and we believe in test driven development, continuous integration, and code review.

As a smaller company, each of our developers has an important role to play - at SimplyAnalytics, you are not just another cog in the wheel, you are an integral member of our team. You will be working on valuable features and making key decisions that impact the direction of the product and our users. In addition, we provide an excellent work-life balance, with 100% remote work, 20 personal days off, flexible work hours, a collaborative work environment, and quarterly “professional development days” to explore and share your interests with the rest of the team.

The Role

We're looking for a Senior Data Engineer to process datasets, manage our existing data workflows, develop and maintain ETL pipelines, conduct data related QA, and supervise a team of data developers. You will be creating and maintaining production-quality in-house tools within a large shared code base, and the data you curate will be used by thousands of university students, researchers, and marketing professionals.

We use PHP and Python for development, Postgres/PostGIS for data storage, and Dask and Dagster for data orchestration. We also use modern software development practices such as static typing and analysis, as well as automated testing.

The ideal candidate is a self-starter, has a high level of attention to detail, is comfortable asking questions, enjoys working with talented colleagues, and has an interest in analytics and data visualization.

We are a 100% remote company. Our employees can live and work anywhere in Canada, the United States, Mexico, Central America, and South America. This is a full-time salaried position. When applying, please include a cover letter.

Responsibilities:

• Design, develop, and test data processing related tools and features
• Process datasets through our data pipelines
• Write high-quality, clean, scalable, maintainable code
• Contribute ideas for new data processing tools or improvements to existing tools
• Assist colleagues through code-review, collaboration, and troubleshooting

Required:

• 5+ years of professional software development work experience
• 3+ years of experience working with large PHP codebases
• 3+ years of experience working with large Python codebases
• Comfortable using Linux CLI
• Experience with PostgreSQL
• Advanced relational database and data manipulation skills
• Experience with data orchestration platforms (e.g., Dagster, Airflow, or Prefect)
• Ability to maintain our full data processing stack in PHP and Python
• Experience with Docker

Bonus:

• Experience with geospatial demographic, business, marketing, or health data
• Experience with PostGIS
• Experience with Mypy or other static analyzers
• Experience with AWS

Oddball is hiring a remote QA Test Automation Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Oddball - We're a high-end boutique dev shop.

Headspace is hiring a remote Senior Software Engineer, API. This is a full-time position that can be done remotely anywhere in the United States.

Headspace - The go-to self-guided meditation and mindfulness app.

Nava is hiring a remote Technical Writer. This is a full-time position that can be done remotely anywhere in the United States.

Nava - Working with government agencies to improve their digital services.

Asymmetric Research is looking to hire an Internship Program to join their team. This is a full-time position that can be done remotely anywhere in AMER or EMEA.

Senior MERN Developer (React / Node / JavaScript)

**

We’re looking for a senior-level full-stack dev who knows the MERN stack inside out and is still very much in the code.

This isn’t a management role. You’ll be contributing directly — writing code, shaping architecture, and helping us build out real product features. You’ll work closely with our IT technical team. You’ll have a voice in decisions, but we expect you to ship and stay hands-on.

**

We’re building a modern workforce management platform for field service teams — real-world use cases like install tracking, dispatch, mobile work orders, photo verification, etc. It’s not a toy app or another dashboard overlay — we’re solving actual ops problems with a lean team and strong stack.

**

• React (Context API, moving toward modularization)

• Node.js + Express

• MongoDB

• REST APIs

• AWS (Lambda, S3, etc.)

**

• Strong experience with **React, Node.js, MongoDB

  **

• You’ve shipped production MERN apps before — full cycle, not just small pieces

• Comfortable designing API routes, data models, and component structure

• Clean, maintainable code and good git hygiene

• You’re opinionated about architecture but not religious — you know trade-offs

• Comfortable working async and remote — you don’t need hand-holding

**Bonus If You’ve Got:

• Experience with AWS (Lambda, CloudFront, S3, etc.)

• React Native or mobile-first development experience

• Integration with third-party APIs (auth, maps, OCR, image validation, etc.)

What This Is Not:

• Not an agency request

• Not a “review PRs and delegate” role

• Not a team lead / manager position

If you're looking to stay close to the code and work on something real, we should talk.

**

Shoot over a quick note with:

• A link to your GitHub or portfolio (real work, not tutorial clones)

• What you're best at, and what kind of problems you like solving

• Your availability and rate (hourly or monthly)

• Optional: something in JavaScript that drives you nuts and how you deal with it

**About The Role

‬Pronto Pilates is a dynamic and innovative tech company that specializes in building a worldwide network of teacher-free (i.e. video-powered) pilates studios.

We are looking for a React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

Our tech stack is NestJS, NextJS, PostgreSQL (web) – React Native Expo (mobile).

• Integrate existing SaaS products where possible (such as CRM tools, subscription management tools, analytics tools) – using their 3rd party APIs to speed up our development time
• Create and maintain cross-platform mobile applications using React Native Expo
• Deploy mobile apps to Google Play Store and Apple App Store
• Build tools that support the marketing, sales and operational teams where required
• Work with product and operations teams to achieve target metrics that represent business success
• Suggest workflow process improvements and sustain self-organised agile teams
• Build pixel-perfect, buttery smooth UIs across both mobile platforms
• Leverage native APIs for deep integrations with both platforms
• Diagnose and fix bugs and performance bottlenecks for performance that feels native
• Maintain code and write automated tests to ensure the product is of the highest quality

To secure an interview, you should possess the following:

• BS/MS degree (or equivalent experience) in Computer Science, Engineering or a related subject
• Minimum five years working experience in developing applications
• 3 years’ experience working with React & React Native
• Comfortable working in an Agile environment (SCRUM, Kanban)
• Comfortable with Test-Driven Development (TDD)
• Excellent interpersonal and relationship building skills, with an ability to influence and drive other team members where required.

**Our Ideal Candidate

React Native developers should also have comprehensive hard skills, including:

• A complete understanding of the entire mobile app development lifecycle, including iOS and Android platforms
• In-depth knowledge of CSS, JavaScript, HTML front-end programming languages, and functional programming
• Knowledge of responsive and user interface designs
• Experience with JavaScript development tools, such as ESlint and Jest
• Experience working with document request models, REST APIs, third-party libraries, and offline storage
• Full-stack web development is a plus
• Experience with TypeScript, unit testing, code debugging, and prop types
• Strong understanding of React fundamentals such as component lifecycle, Virtual DOM, and component state
• Familiar with REST APIs to connect a mobile application to the back-end service
• Excellent written and speaking English skills
• Proficient understanding of code versioning tools such as Git
• Understanding of fundamental design principles for building a scalable application
• Experience with Expo (or Native) messaging APIs and push notifications
• Familiarity with platforms like Segment, Mixpanel is a plus
• Previous experience with subscription products or calendar booking products a plus

This is a full time position. You’ll work remotely from the comfort of your home with occasional business travel.

A career at Lumenalta means the freedom to continue your tech career on your terms. Build exceptional things from wherever you might be.

At Lumenalta, we create impactful software solutions that drive innovation and transform businesses. Since 2000, we’ve partnered with visionary leaders to build cutting-edge tech, solve complex challenges, and deliver results faster through our elite teams and tech-driven approach. Join us in shaping the future of technology.

With over 20 years of fully remote experience, Lumenalta offers:

• Fully remote work
• Rapid growth opportunities
• Self-Improvement
• Industry-leading clients
• Nurturing engineers’ career paths

What You Will Work On

• Collaborate with visionary enterprise clients
• Create transformative digital products
• Learn how to handle difficult situations
• Tackle complex challenges at scale
• Push boundaries with emerging technologies

Requirements

• Expertise in React, Node, Express, Mongo, SQL
  • We have a 2-hour assessment
• High-level English proficiency (written & verbal)
  • Show up as a proactive, team-oriented self-starter on Zoom

Why Lumenalta?

• Work on meaningful, impactful projects.
• Collaborate with a talented, supportive team
• Enjoy a flexible, remote-first environment
• Join a company that values your growth

If you’re a passionate, career-focused developer ready to make a lasting impact, we want to hear from you!

What's it like to work at Lumenalta?

Ongoing recruitment – no set deadline.

At Lumenalta, we create impactful software solutions that drive innovation and transform businesses. Since 2000, we’ve partnered with visionary leaders to build cutting-edge tech, solve complex challenges, and deliver results faster through our elite teams and tech-driven approach. Join us in shaping the future of technology.

With over 20 years of fully remote experience, Lumenalta offers:

• Fully remote work
• Rapid growth opportunities
• Self-Improvement
• Industry-leading clients
• Nurturing engineers’ career paths

What You Will Work On

• Collaborate with visionary enterprise clients
• Create transformative digital products
• Learn how to handle difficult situations
• Tackle complex challenges at scale
• Push boundaries with emerging technologies

Requirements

• Expertise in React, Node, Express, Mongo, SQL
  • We have a 2-hour assessment
• High-level English proficiency (written & verbal)
  • Show up as a proactive, team-oriented self-starter on Zoom

Why Lumenalta?

• Work on meaningful, impactful projects.
• Collaborate with a talented, supportive team
• Enjoy a flexible, remote-first environment
• Join a company that values your growth

If you’re a passionate, career-focused developer ready to make a lasting impact, we want to hear from you!

What's it like to work at Lumenalta?

Ongoing recruitment – no set deadline.

Salary and compensation

About CoW DAO

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

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 on the lookout for a Smart Contract Engineer to join our team. If you’re passionate about blockchain tech, love solving complex problems, and thrive on ownership, we’d love to hear from you. We’ve got a packed roadmap full of exciting projects, and we’re all about building innovative, solid, and high-performance solutions as we grow

What you will do

• Build new features: work on new CoW Protocol features by developing new smart contracts and laying out support for them in our off-chain infrastructure
• Review protocol integrations: advise third parties on how to work with CoW Protocol, write grant proposals and support grantees in their execution
• Foster decentralization: contribute to designing the next version of CoW Protocol, in the spirit of removing central authorities and building trust through verifiable execution
• Contribute to the upkeep of the protocol: investigate suspicious transactions, detect on-chain misbehavior, support CoW DAO governance by participating in the discussion through its formal proposal process (CIPs)
• Maintainable code: collaborative coding through code review, internal feature discussion, full testing coverage, CI, public development process on GitHub
• Collaborating with a remote team, sharing feedback, and debugging

Tech stack you’ll be in contact with

• Smart contracts: Solidity, Foundry, rarely Hardhat
• Back-end contract services: Rust, Kubernetes
• Debugging and alerting: Tenderly, Grafana, Elasticsearch
• Data analysis: Python, Dune Analytics
• Governance: Safe Multisig, Snapshot
• Communication: GitHub, Slack, Notion, Zoom, Google Docs
• Supported chains: Ethreum, Arbitrum, Gnosis Chain, Base

Who you are

• Has solid Solidity expertise – with experience working on EVM-compatible chains
• Is skilled in Rust or Python – Rust is preferred, but Python works too as long as you’re open to learning Rust
• Delivers results – you have a proven history of writing high-quality, functional, and reliable code
• Works well remotely – async communication, detailed code reviews, and team collaboration are second nature to you
• Excels at problem-solving – you can tackle challenges with creativity and efficiency
• Takes ownership – you’re proactive and see things through to the end

A bonus

• Familiarity with the DeFi ecosystem
• Experience contributing to or managing open-source project

What we can offer

• 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 5.000 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.

Going is hiring a remote Senior Software Engineer, Mobile React Native. This is a full-time position that can be done remotely anywhere in the United States.

Going - The travel membership that saves you hundreds on flights.

Ip.world is a platform for launching memecoins remixed from popular IPs. We’re reimagining how communities can speculate on the virality of their favorite creative works in a way that allows IP owners and their remixers to collaborate and earn rewards. Our goal is to bridge crypto and mainstream consumer culture by building the ultimate memecoin playground for tokenized IP remixing.

Role

We are looking for a backend engineer to build the infrastructure for powering our IP backed memecoin platform. You will lead efforts in ensuring our infrastructure is scalable, building out efficient data indexing and event sourcing pipelines, and designing our API layer. The ideal candidate for this role has extensive experience building high-performance backend systems and has basic familiarity or exposure to the memecoin ecosystem.

Responsibilities

• Build out various backend services in Golang for data aggregation and syncing
• Scale infrastructure using Kubernetes, CDNs, and cloud platforms (GCP)
• Engineer a secure, high-performance API layer to support both internal platform operations and extensible third-party integrations
• Create our database, caching and data ingestion workflows to support fast querying and saving of data using Postgres and Redis
• Build and optimize an efficient indexing solution for supporting fast searching and filtering of metadata using Elasticsearch
• Develop a robust API layer to serve our platform actions and queries, and for future 3rd party integrations using golang
• Collaborate with frontend engineering teams to implement WebSocket solutions for real-time features including leaderboards, live updates, and user notification systems

Requirements

• 4+ years of industry experience working as a backend engineer (or equivalent role)
• Deep proficiency in building backend systems using Golang
• Experience working with Postgres, Redis, and Elasticsearch (or similar technologies)
• Familiarity with WebSockets and building real-time events and notifications systems
• Knowledge of basic CI / CD (e.g. using GH Actions paired with Terraform for IaC)
• Experience designing and building out scalable backend systems in various cloud environments (AWS / GCP) using container orchestration tools like Kubernetes
• Has exposure to crypto, particularly in building any kind of DeFi or SocialFi apps
• Passionate about the memecoin or crypto ecosystem

About us

We are developing transformative AI-powered technology to help businesses measure and boost productivity. We are currently in stealth mode, so can’t share too much, but we are solving a critical challenge for many businesses by leveraging recent breakthroughs in AI. Come work with a repeat venture backed founder who has built award winning products over the past 17 years and started companies that are backed by some of the top investors in Silicon Valley - General Catalyst, Google's Gradient Ventures, QED, Expa, Ashton Kutcher and more. 

About the role

We are seeking a highly skilled Sr. Full-Stack Engineer with at least 5 years of experience with our stack, preferably having spent some time in a startup environment. The ideal candidate should be proficient in Python, Django, and React, and have experience working with data-heavy applications. You will join the team remotely and help shape our AI-driven productivity tool. We are "people first". We love finding amazing folks who inspire us, thus are open to all kinds of involvement. Part-time, full-time, or anything else. Almost all of our team members are contractors from around the world. It's not uncommon that they start with just a few of hours a week. So if you already have a full-time job but still want to explore working with us, don’t shy away. There’s room for everyone here, and we’re excited to see where it goes.

Requirements

• Backend: Django, Django Rest Framework (5+ years experience)

• Frontend: React, Next.js, Material UI (3+ years experience)

• Experience receiving, storing and processing large datasets (millions of events daily)

• Experience on scalable backend systems

• Strong command on relational databases

• AI integrations: Langchain, prompt engineering

• Deployment: Heroku, Vercel, GitHub Actions, CI/CD pipelines

• Error monitoring: Sentry

• You don't require detailed specs to build things

• Bonus: You have a strong sense for intuitive UX and a passion for user-friendly interfaces.

What We Offer

• Competitive salary & equity

• Remote work options

• Opportunity to work on cutting-edge AI technology with a world class team

• Professional growth in a fast-paced, innovative environment

• Supportive team and a culture of continuous learning

Salary and compensation

"

This position is open for both Remote (US) and in-person (San Francisco, CA).

The Role

We’re looking for a high-impact engineering intern to join us this summer (or fall/spring). You’ll work directly with the founders, contribute across the stack, and push the limits of robust full-stack software creation with AI. This is a paid internship.

You’ll contribute a ton and build on top of LLMs and agentic workflows to handle code generation, deployment, tool usage, and more for enterprise use cases. At the end of the internship, you’ll have built significant features and functionality that will make a huge impact. 

We’re a fun team, work hard and support each other, and think about the customer every step of the way to create delightful product experiences.

You’re a great fit if you’re…

* Super technical (e.g. impressive personal projects, products, internship experience, etc.)

",

"

The Job

We’re looking for a founding engineer who is incredibly technical, scrappy, and excited to push the limits of robust full-stack software creation with AI. We’re a small team and super excited about what we’re building.

You will:

* Ship fast, building on top of LLMs and creating agentic workflows to handle code generation, deployment, tool usage, and more for enterprise use cases

You’re a great fit if you’re…

* Extremely technical, with a track record of deep, impressive projects or experience (startup or career experience, open source, side projects, etc.)

",

**

• We’re building an AI agent for e-commerce - Zipchat.ai
• We believe the LLM revolution will change the way humanity shops. We’re trying to figure out how exactly.
• We work with hundreds of brands, we’re bootstrapped, we’re default-alive and we’re focused on innovating in the AI/Ecom space.
• We have a Shopify app, a Whatsapp app but we’re building on top of open standards so we can support all kind of merchants.

**

• Experience building RAG AI agents: 
  • LLM experience ( OpenAI, Anthropic, etc )
  • Retrieval ( embeddings / vector dbs )
  • Prompt engineering
• Dev skills 
  • Ruby on Rails 💎 - We run on rails
  • Python 🐍  - Some useful libs require Python
  • Experience with Web scraping & data storage
• Communication 
  • English 🏴󠁧󠁢󠁥󠁮󠁧󠁿 - able to communicate without friction
  • Proactivity - able to communicate issues proactively, unstuck themselves and work as a team
• Mindset 
  • Ownership - wants to take responsibility
  • Innovation - can come up with ideas on improving the agent
  • Embrace the chaos - prioritise shipping value to customers, not clean code. Make your mama proud, not your fellow dev buddies! 🤘

**

• You’ll be in charge of improving our Agent performance/experience metrics and you’ll be judged by how much the agent improves over time.
• Coming up with ideas on how to improve the customer experience & agent performance
• Building new versions of the agent and testing them against the status quo
• Implementing new agent capabilities
• Improving scraping, data collection & storage

**

• Chance to invent how e-commerce works in the AI age
• Get equity in the business
• Freedom to build things your own way
• See your impact real time → fast feedback loop
• Be part of a small bootstrapped startup that has high ambitions

**

• We’re not a very social type of workplace - everyone works in their own lane and we sync ad/hoc
• You’ll be expected to ship

**

• We try to push to prod every day. 
  • We take “Ship fast and break things” to heart.
  • Also “monitor your own stuff and make sure you fix things if you break something” 🙂
  • Innovation velocity is our number one priority. We have no idea what will be useful to merchants and what won’t be, so we try to ship → collect feedback → ship → etc
• We’re a micro team 
  • We’re currently 3 founders, one of them is technical.
  • You’ll be working alongside the tech founder.
• You have the freedom to work however you like 
  • We’re fully remote
  • There’s no working time ( CET is our anchor time )
  • You’re expected to spend ~30 productive hours* per week on the project
  • Nobody cares if you moonlight, have a side hustle or you like to surf during the day - just do your job
• You will be writing code 99% of the time, no bureaucracy 
  • We have no meetings unless necessary ( async chat or loom is preferred )
  • We have no planning, no deadlines, no sprints, and no methodologies → We take the next task and try to ship it ASAP
• You figure things out, no babysitting 
  • You’ll need to come up with ways to improve the agent
  • You’ll be presented with “shaped”** features ( not too concrete, not too vague specs )
  • You’ll need to figure out how to build them following our product philosophy
  • Nobody will babysit you, you’ll need to get things done or ask for help proactively

*Productive work hours - Hours spent actually working. We use Toggl to track our time.

**Shaped features - See https://basecamp.com/shapeup/1.1-chapter-02)

**

• $6k per month ( $72,000 / year ) ( before tax )
• Stock options ( Delaware C-corp )

**

• Submit form
• Get to know you call ( 30-60 min ) 
  • See if we like each other and if might be a good fit or not
• 2 week paid contract ( $2k ) 
  • We believe the only way to see if we’re a good fit is to do some work together
  • We’ll hire you for 2 weeks, see what we can achieve together
  • After, both sides can decide if they wish to continue working
• Contract sign

About us

• We’re building an AI agent for e-commerce - Zipchat.ai
• We believe the LLM revolution will change the way humanity shops. We’re trying to figure out how exactly.
• We work with hundreds of brands, we’re bootstrapped, we’re default-alive and we’re focused on innovating in the AI/Ecom space.
• We have a Shopify app, a Whatsapp app but we’re building on top of open standards so we can support all kind of merchants.

Ideal candidate

• Productive in our Tech stack:
  • Ruby on Rails 💎
  • Hotwire / ViewComponent ⚡
  • APIs REST/GraphQL
  • Experience with Shopify or Meta’s APIs is a plus ➕
• Communication
  • English 🏴󠁧󠁢󠁥󠁮󠁧󠁿 - able to communicate without friction
  • Proactivity - able to communicate issues proactively, unstuck themselves and work as a team
• Mindset
  • Ownership - wants to take responsibility
  • Product - able to build things that people want, and ship from 0 to 1
  • Hackerman - we work with a lot of 3rd parties, should be able to jump through hoops and find ways around walls
  • Embrace the chaos - prioritise shipping value to customers, not clean code. Make your mama proud, not your fellow dev buddies! 🤘

What you’ll be doing

• Implementing business logic / features
• Implementing UI ( customer side / merchant / admin )
• Handling integrations with Shopify, Meta, etc.

Why join

• Get equity in the business
• Freedom to build things your own way
• See your impact real time → fast feedback loop
• Be part of a small startup that has high ambitions

Why not join

• We’re not a very social type of workplace - everyone works in their own lane and we sync ad/hoc
• You’ll be expected to ship 🚢🚢🚢

Work process

• We try to push to prod every day.
  • We take “Ship fast and break things” to heart.
  • Also “monitor your own stuff and make sure you fix things if you break something” 🙂
  • Innovation velocity is our number one priority. We have no idea what will be useful to merchants and what won’t be, so we try to ship → collect feedback → ship → etc
• We’re a micro team
  • We’re currently 3 founders, one of them is technical.
  • You’ll be working alongside the tech founder.
• You have the freedom to work however you like
  • We’re fully remote
  • There’s no working time ( CET is our anchor time )
  • You’re expected to spend ~30 productive hours* per week on the project
  • Nobody cares if you moonlight, have a side hustle or you like to surf during the day - just do your job
• You will be writing code 99% of the time, no bureaucracy
  • We have no meetings unless necessary ( async chat or loom is preferred )
  • We have no planning, no deadlines, no sprints, and no methodologies → We take the next task and try to ship it ASAP
• You figure things out, no babysitting
  • You’ll be presented with “shaped”** features ( not too concrete, not too vague specs )
  • You’ll need to figure out how to build them following our product philosophy
  • Nobody will babysit you, you’ll need to get things done or ask for help proactively

*Productive work hours - Hours spent actually working. We use Toggl to track our time.

**Shaped features - See https://basecamp.com/shapeup/1.1-chapter-02)

Compensation

• $6k per month ( $72,000 / year ) ( before tax )
• Stock options ( Delaware C-corp )

Application process

• Submit form
• Get to know you call ( 30-60 min )
  • See if we like each other and if might be a good fit or not
• 2 week paid contract ( $2k )
  • We believe the only way to see if we’re a good fit is to do some work together
  • We’ll hire you for 2 weeks, see what we can achieve together
  • After, both sides can decide if they wish to continue working
• Contract sign

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🏖 Paid time off

🥧 Pay in crypto

💰 Equity compensation

⬜️ No whiteboard interview

🚫 No politics at work

🎅 We hire old (and young)

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Contra is hiring a freelance Fullstack Developer (React / Firebase / Supabase).  You’ll work across the stack to build a polished, modular web platform that supports users in their career growth and job search.

Responsibilities

• Build frontend features in React, ensuring responsiveness and smooth UX
• Set up and integrate backend services with Firebase or Supabase
• Implement secure user authentication and permissions
• Ensure backend scalability and efficient data handling
• Collaborate closely with the founder and design team to meet product goals

Requirements

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• Solid backend experience with Firebase and/or Supabase
• Experience deploying apps on Vercel or similar platforms
• Comfort working with auth systems, serverless functions, and real-time databases
• Understanding of API-driven architecture and clean code practices
• Ability to work independently, communicate clearly, and meet deadlines
• Bonus: experience with gamification, LMS tools, or AI-driven features

Contra is seeking a skilled Web Developer to join our team for a special project aimed at enhancing our platform. The successful candidate will be responsible for developing and integrating a new website with a payment system. This role is ideal for an inidual who is proficient in web development and has experience with payment integration.

Responsibilities

• Develop a user-friendly website that aligns with Contra's brand and objectives.
• Integrate a secure and efficient payment system into the website.
• Collaborate with the team to ensure seamless functionality and user experience.
• Provide regular updates and reports on progress.
• Troubleshoot and resolve any issues that arise during the development process.