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

MongoDB - The database for modern applications.

Reddit is hiring a remote Data Science Manager. This is a full-time position that can be done remotely anywhere in the United States.

Reddit - The front page of the internet.

**We 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.

**

About Us

Chorus One is one of the leading operators of infrastructure for Proof-of-Stake networks and decentralized protocols. Tens of thousands of retail customers and institutions are staking billions in assets through our infrastructure helping to secure protocols and earn rewards. Our mission is to increase freedom and speed of innovation through decentralized technologies.

We are a erse team of 75+ people distributed all over the globe. We value radical transparency, striving for excellence and improvement while treating each other with kindness and generosity. If this sounds like you, we’d love to hear from you.

Position Overview

As a senior software engineer, you will join our rewards data team to assist in building and maintaining user-facing and internal applications to support rewards reporting and financial performance monitoring. At Chorus One we take the upstream node software from projects like Ethereum, Solana, Cosmos, or Avalanche; compile it; run it on one of our servers; and then make sure it is reliable and secure, monitor it, and keep it up to date. The networks rewards us for that in their native token. Keeping track of those rewards over time is a hard problem, because ironically, blockchains typically don’t expose convenient APIs to extract this data in a useful format. This is why we build our own automation, and integrate with third-party data vendors. Your work will power internal reports and dashboards, as well as external customer reporting, and rewards data APIs.

Key Responsibilities

• Design and develop new features. Discuss with internal stakeholders to clarify how our next feature should look, discuss with fellow engineers how it should be implemented, and then drive implementation to completion.
• Support and collaborate. Review and discuss engineering designs, review code, help fellow engineers, and work with other teams such as platforms engineering, customer success, business development, and our networks team, to get them the insights they need.
• Innovation and continuous improvement. Seek to simplify, optimize, and secure our staking services and systems.
• Take part in on-call rotation approximately 2 days per month. You will be responsible for building APIs used by external parties, which come with an uptime requirement.

Job requirements

What we are looking for:

• 4+ years experience as a Software Engineer.
• Experience with operating and maintaining server-side software in production.
• Experience with Python (most of our rewards data automation is written in Python)
• Other backend software at Chorus One is written in a mix of Rust and Go, experience with these is an advantage.
• Experience using SQL databases, preferably PostgreSQL.
• Experience with implementing REST APIs.
• Strong communication skills and ownership to drive new features independently.
• Interest in blockchain technology, in particular distributed systems and consensus algorithms.
• You are able to work in the following time zone: Switzerland ± 6 hours.

What We Offer

🌱 Growth & Learning

We’re committed to your development! Benefit from an annual 3,000 CHF learning budget that goes beyond just conferences—supporting your physical, emotional, and mental well-being too. Attend up to two conferences a year to e deeper into the Web3 space and connect with the community. Plus, jumpstart your crypto journey with our $1,000 Crypto Starter Kit to explore and engage with cryptocurrencies hands-on.

🤝 Collaborative Culture

Collaboration is woven into our DNA. We thrive in multiplayer settings, ensuring every voice contributes to our mission. Connect across teams through our buddy programs, regular virtual coffee chats, and biannual retreats, which offer unparalleled opportunities to build stronger relationships while tackling some of the industry’s most exciting challenges.

✈️ Retreats in Iconic Destinations

Twice a year, we bring the entire team together for all-expenses-paid retreats in inspiring locations. Past retreats have taken us to Kenya, the USA, South Korea, Switzerland, Spain, Turkey, Thailand, Dubai and Japan. Our next stop? Budapest, Hungary! These retreats are designed to recharge, connect, and spark innovation.

🏡 Work From Anywhere

Embrace remote flexibility that empowers you to work from anywhere in the world. Prefer a coworking space? We’ve got you covered with a 500 CHF/month coworking budget. And for those growing their families, enjoy paid parental leave to ensure your personal and professional lives align seamlessly.

🗣️ Radical Transparency

We practice radical candor, fostering an environment of open, honest feedback that helps us grow inidually and as a team. Expect a culture where learning from each other is not just encouraged—it’s celebrated.

💸 Compensation & Equity

We offer a competitive fixed salary in your preferred local currency or stable coins, complemented by stock options, giving you a stake in the exciting future we’re building together.

💼 Employment

We offer flexibility to suit your inidual needs. With the ability to provide local employment in over 150 countries, you’ll have access to local benefits tailored to your region. Prefer contractor status instead? That’s an option too. During the offer, we work with you to determine the best arrangement, ensuring your experience aligns with your personal and professional preferences.

✨ Curious to see what life at Chorus One is really like? Check out these videos for a behind-the-scenes look:

• Culture at Chorus One

About

Accountable is a digital finance platform that empowers businesses to verify and share data in a privacy preserving way, and retail investors to access verifiable yield opportunities. We aim to remove trust barriers, reduce fraud, and unlock new opportunities for efficient and safe financial growth.

We are looking for a motivated full stack engineer capable of turning ideas into code using new technologies and focusing on speed of delivery. A strong understanding of frontend and backend technologies and being self-driven are a must. Previous Web3 experience (as a developer or as a power user) is required. Understanding of blockchain fundamentals, L1/L2s, basic cryptography etc. is a plus.

Responsibilities

• Develop, test and review code
• Rapidly build and iterate on new features and MVPs using advanced technologies
• Participate in building specifications, design new features, independently assess feasibility, cost, and complexity of things to be implemented
• Handle test and production deployments
• Integrate with other protocols and sources of data

Requirements:

• Strong understanding of both frontend and backend technologies
• Proven experience building high quality web-based products
• Resourceful and self-motivated
• AI assisted coding is a big plus, but not a must as long as the focus is on speed, experimentation and feedback driven development
• Excellent general problem-solving skills and intellectual curiosity
• Up to date with latest developments in the space, a strong interest in staying on top of emerging technologies and industry trends
• Passionate about building and improving products, building MVPs and experimenting with new stuff
• Demonstrated ability to learn and adapt to new technologies quickly
• Professional integrity and dependability
• Experience with dApp development libraries and frameworks is a big plus
• Previous experience with lending protocols is a big plus
• Understanding of blockchain fundamentals, L1/L2s, bridging, basic cryptography etc. is desirable
• Experience working within a fast-paced, startup environment is a plus
• Hackathon participation and pet projects are a plus
• Exposure to growth hacking principles and A/B testing methodologies
• Excellent written and verbal communication skills in English
• Leadership skills are a big plus
• Languages used: Javascript, Python, Java, Solidity
• Frameworks: React

Setup:

• Fully remote with preference for European timezone
• B2B collaboration

Runway is hiring a remote Senior Backend 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.

**We're Seeking First-Principles Thinkers to Transform the Future of Precision Medicine!

You won't see this on our site, but at Anima, we're on a mission to **maximize human wellbeing by building the holy grail of personalized medicine and deep phenotyping—creating a system that keeps people healthy, well, and even extends life. Solving this problem requires first-principles thinkers who thrive across abstraction levels, owning problem spaces end-to-end. We believe the best companies of 2030 will be unrecognizably different—powered by agentic AI that abstracts away complexity.

We’ve built a ‘Knights of the Round Table’ culture—no line managers, PMs, or EMs—just exceptional people with extreme ownership, autonomy, and direct impact on saving lives. Our team includes YC CTOs, international robotics champions, and brilliant clinical engineers.

Growth

• 450% growth in 2024, scaling from $150K to $7M ARR in 20 months
• Cashflow positive with elite unit economics
• Backed by a top 1% VC fund

 Roles & Location

• Hiring across the board: software engineers, design engineers, sales leads, and growth generalists
• Remote-first (Europe/North America), London HQ

We are pioneering agentic AI to save lives—if that excites you (or know someone that might love it here),

 share a few details in this form to fast-track your application or chat with our CEO, Shun, to learn more.

Zoom is hiring a remote Manual QA Engineer. This is a full-time position that can be done remotely anywhere in Ireland.

Zoom - Modern enterprise video communications.

As a Senior Android Engineer, you will work alongside a small team of engineers, creatives, and project managers to build mobile apps that connect fans and collectors to the exciting world of Funko.

This is a contract position.

Your Superpowers in Action

• Develop Android apps using the latest frameworks, libraries, and technologies to deliver exceptional user experiences.
• Implement advanced animations and transitions with a focus on performance and usability.
• Build resilient non-UI components, including networking, caching, and long-running task functions, classes, and libraries.
• Participate in our established code review process to ensure code quality and consistency.

Must-Have Superhero Gadgetry

• Expertise in Android development using Kotlin and/or Java.
• Strong architectural skills, designing scalable apps with reusable components and patterns.
• Proven ability to create custom UI components and adapt layouts for various screen sizes and orientations.
• Deep understanding of Android threading and concurrency, including coroutines and managing complex asynchronous operations.
• Familiarity with reactive programming patterns and frameworks such as RxJava or LiveData/Flow.
• Experience integrating with external data sources (e.g., REST APIs) and managing caching effectively.
• Proficiency with Git and branch-based workflows such as GitHub Flow.
• Meticulous attention to detail, writing clean, maintainable code.
• Write unit tests for critical sections of the code base.
• Experience with the full app deployment lifecycle, including continuous integration, Play Store submission, and managing app updates.
• 5+ years of experience as a design-focused Android software engineer.

Nice to Have

• Experience with 3D libraries such as Unity or OpenGL.
• Familiarity with AR frameworks like ARCore.

Job Responsibilities:

• Conduct cutting-edge Bitcoin related research based on industry pain points.
• Write high-quality research reports and papers.
• Deliver high-quality presentation or tech workshops.
• Contribute to open-source projects in the field.
• Build technical impact for the project.

Qualifications:

• Strong writing/presentation skills with online show cases.
• Research/engineering experience in well-know Bitcoin related companies/projects is preferred.
• Proficiency in bitcoin script/taproot script is preferred.
• Familiarity with BitVM (and it’s derivatives) principles and implementation is preferred.
• Background in cryptography and algorithm implementation is preferred.
• A Ph.D. in a related field is preferred.

Base:

US.

Our Team

At Trilitech, we drive innovation in Web3 by empowering developers and creators to build pioneering solutions on the Tezos blockchain. Our expertise spans core blockchain development, decentralised applications, infrastructure tooling, developer experience, and incubation programs, with a strong focus on cultural projects, decentralised finance, and gaming. We’re dedicated to redefining possibilities and setting new standards within the rapidly evolving blockchain space.

Our Technology

Tezos is an open-source blockchain known for its flexibility, security, and unique self-evolving capabilities. With innovations like Objkt.com and fx(hash). Tezos also partners with major brands like Manchester United, reinforcing its global impact.

We encourage you to explore the Tezos Discord to learn more about the project.

Who We’re Looking For

We’re looking for people who make things happen, not watch things happen. You should thrive under pressure, be excited by the opportunity to make an impact and you’ll be given the autonomy to do so. Bring your enthusiasm and determination, and you’ll play a critical role in our growth journey.

If you’re comfortable taking initiative, pushing boundaries, passionate about crypto and working in a high intensity environment then you’re exactly the type of person who will succeed here.

The Role

The Developer Relations team at Trilitech is responsible for enhancing the usability and accessibility of Tezos blockchain technologies for developers. We focus on creating intuitive tools, comprehensive documentation, and robust support systems that empower developers to build efficiently and creatively.

If you enjoy simplifying complex technical processes, are passionate about improving developer workflows, and are committed to fostering an inclusive and innovative developer community, then you are the kind of person we are looking for. You will be working with an equally talented and innovative team with the goal of elevating the overall developer experience building on the Tezos blockchain.

What you’ll do

• Creating engaging, educational, and inspiring developer-focused content (e.g. blog posts, tutorials, sample code)
• Speaking at conferences, meet-ups, and other industry events
• Engaging with developer communities online and in-person to gather feedback and improve the developer experience
• Collaborating with Product, Engineering, Marketing, and ecosystem partners to enhance developer support
• Supporting partners and developers in accelerating adoption
• Exploring emerging technologies and frameworks to improve developer success
• Contributing to and leading the development of developer tools and SDKs to streamline onboarding
• Assisting key partners and support new launches from concept to rollout.

What you’ll need

• Experience with Tezos or EVM-compatible blockchains
• Background in Developer Relations, Advocacy, or a similar role
• Prior hands-on experience as a software engineer or in a technical role
• Strong communicator with a track record of publishing technical content and speaking at industry events
• Ability to manage multiple projects and prioritise effectively in a fast-paced environment
• Passion for open-source contributions and the developer ecosystem
• Familiarity with software engineering best practices like version control, code reviews, and continuous integration

Why You’ll Love It

Join a fast-paced environment where you’ll lead impactful initiatives. You’ll have autonomy to deliver results, supported by passionate colleagues in a focused but fun environment. We value ambition, creativity, and continuous learning—providing the ideal setting for career growth.

What You Can Expect From Us

• Competitive salary with substantial incentive schemes
• Hybrid working environment
• Daily lunch provided in-office
• Commuter costs reimbursement (up to £3,300 annually)
• 20-day policy for working abroad
• 25 days paid holiday plus your birthday off
• Enhanced parental & adoption leave
• Pension contributions double matched (up to 10%)
• Private medical and travel insurance with mental health support
• Learning and development programs
• Life assurance (5x base salary)

Our Principles:

• Desire to Win: We strive for excellence and aim to be the best.
• Sense of Urgency: Adaptability and decisive action keep us ahead.
• Ownership Mindset: We lead by example, taking responsibility for outcomes.
• Pragmatism: We focus on impactful results.
• Communication: Transparency and collaboration are central.
• Resourceful Approach: We maximise our resources for competitive advantage.

Experience is great, but passion is key. If you believe in your potential, we encourage you to apply. Trilitech is an equal opportunity employer, dedicated to fostering ersity and inclusion. Please inform us if you require accommodations during the interview process.

By applying, you consent to your application data being shared with our partner companies for recruitment purposes, in compliance with our privacy policy..

Oddball is hiring a remote Fullstack 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.

Monzo is hiring a remote Lead Machine Learning Scientist, Personalisation. This is a full-time position that can be done remotely anywhere in the United Kingdom.

Monzo - We're a bank that lives on your phone, on a mission to make money work for everyone.

We are seeking a skilled Blockchain Back-End Developer to join our dynamic team. This role focuses on designing, developing, and maintaining robust back-end systems for asset tokenization while integrating critical APIs for KYC (Know Your Customer), wallet management, and custody solutions. You will collaborate closely with cross-functional teams to deliver secure, scalable, and efficient blockchain applications.

Key Responsibilities:

• Design and develop back-end architecture for asset tokenization platforms, ensuring high performance and security.
• Implement and integrate APIs for KYC verification, digital wallets, and custody solutions.
• Create and maintain smart contracts for token issuance and management on blockchain networks (e.g., Ethereum, Polygon, etc.).
• Ensure seamless data flow between blockchain networks and traditional systems.
• Collaborate with front-end developers, DevOps, and product managers to deliver end-to-end blockchain solutions.
• Optimize and secure blockchain transactions, data handling, and API integrations.
• Maintain up-to-date documentation of systems, APIs, and workflows.
• Stay updated with the latest advancements in blockchain technology and asset tokenization.

We are seeking a mid-level PHP developer to help us maintain Gymdesk’s web apps, build exciting new features and play an active role in shaping our technology roadmap.

If you have a strong sense of self-motivation and like the idea of a role in which you can grow your skills, knowledge and responsibilities, then we’d love to hear from you.

About Gymdesk

Gymdesk offers modern, online management software to gyms, martial arts schools, yoga studios and wellness businesses. In an industry dominated by outdated and cumbersome products, we provide a seamless, intuitive user experience.

Thousands of customers rely on Gymdesk every day to streamline workflows and grow their businesses. We continuously enhance our software based on user feedback and industry research, and our commitment to exceptional customer service is reflected in our 4.8-star rating on Capterra.

About The Job

As a software developer at Gymdesk, you will be joining a small but effective team, working closely with colleagues in our product, support and customer success teams. The engineering team is globally distributed, and currently spans 6 countries; despite this, we are a close-knit team and make it work, taking everybody’s needs into consideration.

What does a typical week look like here?

Here are some of the tasks you can expect to work on in a given week:

• Enhancing existing features based on internal and customer feedback

• Optimizing pages, flows and performance to increase conversion and retention

• Troubleshooting and fixing bugs

• Designing, planning and building new features from the ground up

• Writing automated tests

• Giving and responding to code reviews

• Assisting with backlog refinement

• Attending retrospectives and planning sessions

• Helping us meet our non-functional goals (performance, security, etc)

• Conducting technical and functional spikes

What’s the tech stack?

Our main web-application is built on Zend Framework, with server-side rendered templates, MySQL for data persistence, and jQuery for frontend behaviour. We are increasingly moving towards an API-first design, and make heavy use of Symfony components within our existing ecosystem. Our mobile app is built with Flutter.

Requirements

• 2+ years of professional experience working with PHP

• Proficient with at least one popular PHP MVC framework (e.g. Symfony, Laravel)

• Good understanding of JavaScript, HTML and CSS for the modern web

• Familiarity with classic JS libraries such as jQuery and jQuery UI

• Ability to design efficient database schemas and queries for MySQL

• Good understanding of browser and device compatibility

• Some experience with testing

• Excellent written and verbal communication in English

• 3-4 hours overlap with London time

Compensation

• This is a full-time, 40-hour a week role

• Annual salary of $45-65K depending on location, skills and experience

• Participation in our Health Reimbursement Policy (US employees only)

• 20 PTO days annually, in addition to national holidays in your country

Hiring Process

If you’re excited about creating software that looks beautiful on the frontend and elegant on the backend, give us a shot. We’ll do our best to make the interview experience fast, enjoyable, and mentally stimulating.

1. Screening call

   Ask us general questions here!

2. Technical interview with CTO or lead engineer

   Ask us tech questions here!

3. Technical assignment (small, only for the final 1-2 candidates)

   Show us what you can do!

If we don’t get a chance to speak with you, thank you so much for your interest, and hopefully there will be a better opportunity down the line.

Important notes for all applicants: For non-US candidates, we currently only offer contractor (freelance) engagements. All remuneration is in USD, regardless of candidate location. We are unable to sponsor any visas or facilitate visa transfers. Applications and CVs must be in English to be considered. You must complete all applicant questions to be shortlisted for screening.

We are seeking a skilled and motivated Backend Engineer (Data Platform) to join our team and help build a robust data platform. Your responsibilities will include:

• Developing and enhancing data pipelines: Create and expand existing data processing pipelines for both structured and unstructured datasets (mainly Python and SQL)
• Integrating with third-party systems: Work with external tools and APIs (e.g., Microsoft GraphAPI, financial data providers) to enable seamless data flow between third-party systems and Desia.
• Monitoring and optimizing performance: Track the performance of the data platform, analyze logs, and recommend infrastructure improvements using tools like GCP, Sentry, and CloudSQL.
• Collaborating on data modeling: Design and implement efficient data structures for relational and non-relational systems to support scalable and reliable data processing.
• Ensuring system reliability: Contribute to the stability and scalability of the platform by addressing bottlenecks, optimizing queries, and ensuring smooth operation of containerized environments (e.g., Docker, Kubernetes).

Must-Have Skills:

• Strong Python expertise: proven working experience in both scripting and object-oriented programming (OOP).
• Solid SQL skills: Experience with writing efficient queries and optimizing database performance.
• Data modeling: Hands-on experience designing and organizing data in both relational and non-relational formats.
• Communication skills: Excellent verbal and written communication in English.
• Adaptability: A quick learner who can bridge knowledge gaps to tackle new challenges effectively.
• Collaborative mindset: Open to sharing ideas, providing feedback, and contributing to discussions constructively.

Nice-to-Have Skills:

• Cloud experience: Familiarity with Google Cloud Platform (GCP).
• Containerization knowledge: Working familiarity with tools like Docker and Kubernetes.
• Database expertise: Experience with PostgreSQL.
• Scheduling: Working experience with task scheduling (ex. cron, dag's like Airflow)
• Python libraries: Knowledge of libraries such as asyncio, pydantic, fastapi, and psycopg
• Search technologies: Familiarity with ElasticSearch or OpenSearch.
• System design: Experience with RESTful APIs and queue-based systems.

Qualifications

• Holding a Master's degree in Computer Science or a related field or possessing similar practical experience.
• A minimum of 3 years professional experience in Data Platform Engineering or Backend roles

Compensation and benefits

• Salary depending on experience and skills (£40000 - £65000)
• Performance bonuses
• Stock options and retirement plan

You could work anywhere. Why Figment?

Figment powers the future of Web3 through industry-leading blockchain infrastructure. As the leading provider of staking solutions, we help 500+ institutional clients optimize their crypto rewards, including top exchanges, asset managers, wallets, foundations, custodians, and major token holders. Our clients trust Figment for a comprehensive suite of services, including reward optimization, cutting-edge API development, detailed rewards reporting, seamless partner integrations, governance support, and slashing protection.

Backed by a team of passionate and intelligent Figmates, with a 100% remote-first global presence across 12 countries, our company is on a mission to accelerate the adoption, growth, and long-term success of the Web3 ecosystem. We’re building the infrastructure that will power the decentralized future.

As a fast-growing tech company, we’re looking for builders and innovators — people who thrive in the face of uncertainty and are motivated to make an impact. We are also looking for true teammates - people who are genuine, humble, and driven to level up together. If you’re excited to shape the future, contribute to an energetic company culture, and work at the cutting edge of blockchain technology, we want you to join our team and help us lead the charge!

About the opportunity

We are seeking a Principal Solana Smart Contract Engineer to lead the development of a new Solana-based product from the ground up. This role is critical to the success of the product, where you will be responsible for architecting, developing, and securing smart contracts, ensuring seamless integration with backend and data engineering teams, and optimizing performance for large-scale B2B2C distribution.

We’re looking for someone who can take ownership of smart contract development from inception to operation, working closely with product and engineering teams to shape the vision, bring it to life, and ultimately maintain, optimize, and integrate it into Figment’s other products. You’ll be responsible for setting technical direction and driving best practices for Solana development.

This is a full-time remote position, with team members across North America, Europe, and Southeast Asia. This role is unique because you’ll be at the forefront of building a new product that expands the blockchain ecosystem. If you enjoy tackling complex blockchain challenges, architecting secure smart contract systems, and leading initiatives in a fast-paced environment, this role may be a great fit for you. Ideal candidates are deeply experienced in Solana ecosystem development, highly proficient in Rust, and capable of mentoring engineers in your area of expertise while influencing cross-functional stakeholders.

How you will make an impact

• Lead the design and architecture of Solana smart contracts, ensuring scalability, maintainability, and security.
• Collaborate with Product to refine specifications and drive feasibility discussions.
• Ensure security and audit readiness, implementing best practices to mitigate vulnerabilities.
• Optimize smart contract performance, reducing compute unit costs and enhancing execution speed.
• Work closely with backend and data engineering teams to integrate blockchain data into a full-stack solution.
• Drive technical strategy, establishing best practices for Solana development.
• Mentor and support other engineers in smart contract development, raising the technical bar and fostering a culture of best practices.

What you bring to the team

• 5+ years of experience in software engineering, with deep expertise in Rust and Solana smart contracts.
• Proven ability to design and deploy production-grade Solana programs.
• Experience influencing architectural decisions across multiple teams.
• Strong understanding of security best practices, audits, and risk mitigation for smart contracts.
• Experience working with backend and data engineering teams to deliver comprehensive blockchain solutions.
• Track record of leading zero-to-one blockchain product development.
• Excellent communication and collaboration skills, with a product-driven mindset.

Even Better If You Have

• Experience contributing to Solana open-source projects or protocol-level development.
• Prior experience with large-scale blockchain infrastructure and distributed systems.
• Hands-on experience improving blockchain developer tooling.
• Knowledge of other blockchain networks beyond Solana, especially Ethereum

Technologies we use

We don’t expect you to be an expert in all of these, but these are all used by adjacent teams so familiarity with them will be a plus:

• Solana / Rust
• Kubernetes
• Datadog
• AWS
• Snowflake
• Go
• Ruby
• Javascript/Typescript
• GraphQL
• Github

Teams you’ll collaborate with most often

• Product: Define and refine smart contract specifications.
• Frontend, Backend & Data Engineering: Integrate blockchain data into full-stack applications.
• Security & Auditing: Ensure contract robustness and mitigate vulnerabilities.
• Infrastructure & DevOps: Optimize deployment and monitoring.
• Engineering Leadership: Align technical vision across multiple teams.

Why you might be excited about us

At Figment, we offer an exciting range of competitive benefits designed to support and empower every member of our team:

• 100% remote-first environment. Our flagship office is in Toronto, Canada. We also have additional co-working spaces in New York, London, and Singapore. That means if you want to do your things in the office (if you’re near one), at home, or a bit of both, it’s up to you.
• 4 weeks of PTO that kick in day one, with an additional 1 week of flex days.
• Extended company-paid health benefits that kick in day one.
• Best in class parental leave and flexible arrangements.
• A home office stipend to create a space that you enjoy working in.
• Monthly Wifi reimbursement.
• A yearly Learning & Development budget.
• 401K (US) or RRSP match (Canada).
• Stock Options in the company.
• A competitive bonus (based on company performance) that is distributed bi-annually - we believe that the company’s success should be shared with our employees often
  • For roles listed within the Sales Department, there is instead a competitive commissions structure which will be outlined during your first interview with Figment
• Annual onsite company gatherings and retreats to inspire team bonding, collaboration, and fun!

Other reasons you may love working at Figment

• We are a team of under 200 members, which allows for an impactful contribution from day one.
• We place a strong focus on personal career development to shape a role that fits your goals and interests. Your satisfaction and well-being matter to us, and we’re here to support your ongoing growth.
• Our culture is one of honesty, professionalism and risk taking in a high-growth environment.
• Our team members themselves recommend working at Figment - with an eNPS score of 54 (which is ranked as ‘great’!).
• We are also extremely proud of ranking as one of the top Web3 employers by Talent Titans.

Compensation

One of Figment’s core principles is “Making the Invisible Visible” - ensuring transparency and information sharing in all communication. Figment is committed to transparency regarding pay, benefits, and other compensation types for all internal roles as well as all roles being hired for.

Base Salary: The CAD base salary range for this position is CAD $200,000 - $230,000. This range reflects base salary only, and does not include additional compensation or benefits. For candidates in other countries, the pay range will be disclosed upon your first interview with Figment (being a globally remote company, the list of salary ranges would simply be too long to note here!). The range displayed reflects the minimum and maximum range for a new hire across all Canada or the US. A candidate’s specific pay within the range will be determined by various factors including job-related skills, relevant education, and training.

Interview process

At Figment, we try to go above and beyond in making sure that you have the best possible experience interviewing with us. We strive for a smooth, organized, and informative process.

• During your first Recruiter Call, you will be provided with more information about Figment, the position and what to expect for the rest of the interview process. Please be prepared to discuss why you are interested in joining Figment and what excites you about the position and company.
• As we go through the process, we work to make sure that you hear back from us in a timely fashion. If we decide at any point that we’re unfortunately not moving forward, we will give you feedback on why it was not a fit.
• We aim for the entire process to take around 2-3 weeks from initial screen to offer. There can be exceptions on either side of the bell curve here, but as a rule, that’s the time-frame you can expect.

See here for Figment’s California Employee Privacy Policy.

At Figment, we have a thorough hiring process to verify the identity of all job candidates. This includes checking documents, conducting in-person interviews, biometric authentication and completing background checks. Candidates must pass all these steps to be considered for a job with Figment. Anyone who provides false information or tries to skip these steps will be disqualified from the hiring process immediately.

To learn more about Figment, our team, and the amazing work we are doing, visit our website

Are you ready to join us?

Love working with LLMs like ChatGPT and Claude? We’re building an AI-powered support system to enhance customer service and streamline operations. You’ll lead development – integrating APIs, fine-tuning prompts, and collaborating with other teams. If you enjoy solving real-world problems with persistence and impact, we want to hear from you.

What You’ll Do

We believe AI can handle a significant share of our technical support without sacrificing accuracy. Your job is to integrate AI into our human support system, ensuring it smartly distinguishes between cases AI can solve and those needing human expertise. You’ll refine the AI’s capabilities over time, expanding its role in support. This is a long-term, evolving project, not a one-off build.

What You’ll Need

• 5+ years of software development (we use PHP, Node, and Python).
• Experience with APIs, distributed systems, and automated testing.
• Familiarity with LLMs and prompt engineering.
• A results-driven, problem-solving mindset.
• Excellent English for written support interactions.
• Strong communication skills for working closely with the support and documentation teams.

How We Work

We’re a fully remote team with minimal meetings – just enough to stay aligned and focused. Expect weekly planning calls, daily check-ins, and plenty of deep work time.

What We Offer

• 100% remote position,
• Body And Mind Movement (BAMM) program to support your physical activities and other hobbies, 
• A computer budget to make your workplace better,
• A Kindle device with an access to our company Amazon account, 
• We respect national holidays in each country and want you to have a rest these days, 
• Being part of a team of smart, self-driven iniduals,
• Great opportunity to progress and advance,
• Collaborating with team members across the globe.

Ready to build something meaningful? We’re excited to hear from you and see what we can achieve together at OTGS!

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 looking for a passionate Senior Frontend Engineer to help take decentralized trading to the next level. You’ll take charge of our CoW DAO products and help shape what’s coming next, making sure the user experience is smooth across trading interfaces, analytics, docs, and more.

We’re after someone who’s a great communicator, loves working with a team, and is eager to learn (especially about blockchain). If you thrive on ownership, like solving problems, and are curious about the world of blockchain, this might just be the role for you.

Tech stack we work with

• Frontend: Typescript, React, styled-components
• Web3: Web3, ethersjs, Hardhat, Solidity, IPFS, TheGraph, ENS
• Testing: Jest, Cypress, React Testing Library
• Analytics: Dune Analytics, Google Analytics

What you’ll be doing

• Develop and improve user-facing applications like CoW Swap on top of the CoW Protocol
• Build and implement new features quickly, with a focus on performance, accessibility, and quality
• Decide when to create reusable abstractions and when to build one-off features, always keeping scalability and maintainability in mind
• Contribute to the product roadmap by proposing new features, sharing design ideas, and helping the team prioritize tasks
• Push the boundaries of decentralized user interfaces. Our products are hosted traditionally but also deployed on decentralized networks like IPFS/ENS, and we work with decentralized infrastructure like The Graph and Ethereum nodes

What we’re looking for

• Experience: 3+ years of professional experience building client-side web apps
• Technical skills: Expertise in front-end technologies (React, TypeScript, CSS, state management libraries like Redux, Recoil, or Jotai)
• Code quality: Ability to review and guide the team on architecture, code quality, and best practices
• Problem-solving: Strong debugging and problem-solving abilities
• Team player: Excellent communication skills and a willingness to collaborate and share knowledge
• Self-driven: You take ownership of your work and are proactive about learning and growing in your career
• Blockchain knowledge: Experience integrating frontend with smart contracts and familiarity with tools like Web3.js, Ethers.js
• Product vision: A solid understanding of the crypto DApp ecosystem, user experience, and market trends

Bonus points if you have:

• DevOps & tooling: Experience with CI/CD pipelines, testing frameworks, and deployment tools; familiarity with cloud services (AWS, GCP, etc.)
• Backend experience: Knowledge of Node.js, databases, and RESTful or GraphQL APIs

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 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.

Timescale is hiring a remote Senior QA Engineer - Database. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Timescale - Simple, scalable SQL for time-series and IoT.

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.

We are seeking a skilled Blockchain Back-End Developer to join our dynamic team. This role focuses on designing, developing, and maintaining robust back-end systems for asset tokenization while integrating critical APIs for KYC (Know Your Customer), wallet management, and custody solutions. You will collaborate closely with cross-functional teams to deliver secure, scalable, and efficient blockchain applications.

Key Responsibilities:

• Design and develop back-end architecture for asset tokenization platforms, ensuring high performance and security.
• Implement and integrate APIs for KYC verification, digital wallets, and custody solutions.
• Create and maintain smart contracts for token issuance and management on blockchain networks (e.g., Ethereum, Polygon, etc.).
• Ensure seamless data flow between blockchain networks and traditional systems.
• Collaborate with front-end developers, DevOps, and product managers to deliver end-to-end blockchain solutions.
• Optimize and secure blockchain transactions, data handling, and API integrations.
• Maintain up-to-date documentation of systems, APIs, and workflows.
• Stay updated with the latest advancements in blockchain technology and asset tokenization.

As a Senior Android Engineer, you will work alongside a small team of engineers, creatives, and project managers to build mobile apps that connect fans and collectors to the exciting world of Funko.

This is a contract position.

Your Superpowers in Action

• Develop Android apps using the latest frameworks, libraries, and technologies to deliver exceptional user experiences.
• Implement advanced animations and transitions with a focus on performance and usability.
• Build resilient non-UI components, including networking, caching, and long-running task functions, classes, and libraries.
• Participate in our established code review process to ensure code quality and consistency.

Must-Have Superhero Gadgetry

• Expertise in Android development using Kotlin and/or Java.
• Strong architectural skills, designing scalable apps with reusable components and patterns.
• Proven ability to create custom UI components and adapt layouts for various screen sizes and orientations.
• Deep understanding of Android threading and concurrency, including coroutines and managing complex asynchronous operations.
• Familiarity with reactive programming patterns and frameworks such as RxJava or LiveData/Flow.
• Experience integrating with external data sources (e.g., REST APIs) and managing caching effectively.
• Proficiency with Git and branch-based workflows such as GitHub Flow.
• Meticulous attention to detail, writing clean, maintainable code.
• Write unit tests for critical sections of the code base.
• Experience with the full app deployment lifecycle, including continuous integration, Play Store submission, and managing app updates.
• 5+ years of experience as a design-focused Android software engineer.

Nice to Have

• Experience with 3D libraries such as Unity or OpenGL.
• Familiarity with AR frameworks like ARCore.

**About Learning Tapestry

What we’re looking for

You’re an exceptional professional software engineer with at least 5 years of software engineering experience. You’re comfortable in PHP and embrace new approaches to solve problems.  We are looking for someone to start from 20-30 hours per week for the first few months, and then stay at 16-24 hours / week for maintenance purposes going forward. There should be at least three hours of availability between 8AM - 5PM ET on your working days. You will be helping maintain a Laravel/Vue.js project for a few clients, making sure the system is running smoothly and also adding additional capabilities requested. 

Required Skills and Experience

• You have either: 
  • Computer Science or Engineering degree or other STEM degree, or
  • Exceptional professional software engineer experience and expertise
• You have very good written communication skills, fluent written English, and comfortable, clear spoken English.
• At least five years of Software Engineering Experience.
• Senior level knowledge of PHP (deep knowledge of Laravel preferred)
• Senior level knowledge of Javascript/Typescript (deep knowledge of Vue.js preferred)
• Write clean, self-explanatory code using S.O.L.I.D. and design patterns
• TDD
• Experience with SQL DBs. 
• Experience working in collaborative environments using git (e.g. GitHub).
• Comfortable using ticket-based technical project management (e.g., GitHub tickets and boards) 

Bonus skills

• Experience with other programming languages (Ruby, Python, Node.js)
• Some DevOps/Linux experience with AWS/Azure/Rackspace/Heroku/DigitalOcean
• Continuous Integration and Deployment experience (e.g., CodeShip, Cloud66)
• Experience in EdTech Field (Education projects)

To Apply

Apply with your resume and a cover letter. Please include your availability for this position, as well as your hourly rate. Applications without this information included will not be considered.

Please do not apply by reaching out to other company emails or iniduals: please note that applying using other communication channels will result in your application not being considered.

About You

You’re comfortable in a remote work environment, with team members from different time zones. You can manage your own time and are a self-starter. You have a distraction-free place you can use for work that offers reliable Internet access, either in your home or a local co-working facility. You are experienced and fluent in the productivity tools we use, like Google Apps & Hangouts, Slack, and Harvest for time tracking.

Please do not hesitate to apply if you do not match these requirements exactly but think you could be a good fit.

Equal Opportunity

Learning Tapestry is an equal opportunity employer and encourages iniduals of all ethnic and racial backgrounds, sexual orientations, and gender identities to apply. We are also particularly interested in iniduals who have lived in or worked with underserved communities such as low-income, gender nonconforming, disabled, or indigenous peoples.

We are seeking a skilled Smart Contract Engineer to develop secure and reliable smart contracts specifically for our robotics identity layer. This role is integral to bridging blockchain technology with robotics, enabling secure, verifiable, and scalable identity management solutions. Success in this role means deploying robust smart contracts, ensuring blockchain best practices are followed, and contributing to the advancement of decentralized robotics infrastructure. You will collaborate closely with robotics engineers, blockchain architects, and product managers to integrate innovative blockchain solutions into robotics platforms.

What Success Looks Like:

• Deploying reliable, secure, and efficient smart contracts.
• Seamless integration of smart contracts with robotics identity systems.
• Proactive identification and mitigation of potential security risks and vulnerabilities.
• Effective collaboration across engineering teams, contributing actively to system architecture decisions.
• Consistent adherence to coding standards, testing protocols, and best practices in blockchain technology.

Responsibilities:

• Design, develop, test, and deploy Ethereum-compatible smart contracts using Solidity.
• Integrate smart contract solutions within robotics identity layers, ensuring compatibility and performance.
• Conduct comprehensive audits and tests of smart contracts to identify and mitigate security vulnerabilities.
• Maintain comprehensive technical documentation and ensure code transparency.
• Collaborate with cross-functional teams to define system requirements and blockchain integration strategies.
• Stay updated with emerging blockchain technologies, providing strategic recommendations on technology adoption.

Qualifications:

• Proven experience developing and deploying Solidity smart contracts in production environments.
• Strong understanding of blockchain fundamentals, Ethereum architecture, and decentralized applications (dApps).
• Familiarity with tools such as Hardhat, Foundry, or similar smart contract development frameworks.
• Experience performing smart contract audits and code reviews.
• Solid understanding of cryptographic protocols and secure coding practices.
• Excellent problem-solving skills and ability to work independently and collaboratively in a fast-paced environment.
• Strong verbal and written communication skills.
• Bachelor’s degree in Computer Science, Engineering, or a related technical field preferred, or equivalent professional experience.

Missive is leading the way in transforming how teams communicate and work together. We're looking for a Back End Developer to join our team. In this role, you’ll work closely with our technical team and designer to develop and support our world-class web application. You’ll have a direct impact on how users experience and interact with our product.

What you’ll achieve

• Collaborate with product and design teams to implement new features from scratch. (complex codebase)
• Improve and modernize existing back-end code for performance and readability. (we talk in billions of rows)
• Lead bug fixes and support related investigation (we are dealing with emails, you need to love edge cases)

Must Have Skills

• 10+ years of experience in all things related to what is listed in this job offer.
• Deep Ruby and Rails and Postgres knowledge: Projects showcasing API integrations, scalable services, data optimization, and security best practices.
• Experience to build reliable, maintainable, and scalable back-end systems.
• Comfortable in a fast-paced, complex environment; able to debug, optimize, and automate workflows while handling large data flows.
• Autonomy & Self-Development – Thrives in a small, high-performing team, takes ownership, and learns new technologies independently.
• Bonus. Experience with email infrastructure.
• Be obsessed with optimized code and usability.

**Working at Missive

We are passionate about our craft and committed to delivering exceptional results. We build with a clear focus on serving our customers. Creating the best possible product, in the end, is what truly matters.

We ship with high quality and velocity, believing that it is not only rewarding but also a lot of fun.

• Zero-ish meeting culture, allowing you to focus on what you do best.
• Do more with less mentality.
• Remote or/and in-office work options (HQ 👉 Quebec City, Canada).
• Work closely with a team that recognizes the value of technical expertise.
• Work with/for a product loved by its users.
• Retreats.

**

The salary for this position depends on experience and qualifications within the range of CAD $125,000 to $175,000 annually. In addition to the base salary, we offer a comprehensive benefits package that includes insurance coverage, telemedicine, 5 weeks of vacation time, and other perks.

**How to Apply

We welcome applications from candidates located anywhere in the world.

Start date is as soon as possible. Submit your resume to [email protected].

Mercury is hiring a remote Frontend Engineer - Product. This is a full-time position that can be done remotely anywhere in Canada or the United States.

Mercury - Banking built for startups.

• Full-time
• Brno, Czechia, or remote in Europe

Description

What you will do

• Maintain and optimize the search server to continually improve geocoding results.
• Coordinate the ingestion, transformation, and curation of raw geospatial data.
• Develop pipelines that convert large-scale data sources (e.g., Planet OSM PBF) into specialized data structures powering our geocoding service.
• Manage releases, automated data processing pipelines, automated tests, and other core programming tasks.
• Monitor the geocoding service and design targeted enhancements.

What we expect from you

• Ability to take ownership, define requirements, set priorities, and drive progress with other team members.
• Strong leadership and teamwork skills combined with hands-on expertise in programming, system design, and problem-solving.
• Extensive professional experience in software engineering.
• Fluent in English, with strong listening skills and the ability to communicate effectively, even in a remote work environment.
• Experienced in cross-team collaboration and communication.

Preferred Qualifications

• Deep understanding of common data structures.
• Understanding the OpenStreetMap data model and its limits.
• Strong development experience in TypeScript, Node.js, Java and Rust.
• Strong database experience.
• Strong focus on writing efficient code in collaboration with team members. Understanding that creating a readable and maintainable codebase is sometimes more desired than the most elegant solution.
• Experience working in distributed engineering teams and being familiar with the concepts of Agile development and Scrum methodology.
• Familiarity with the GIS (maps) domain, including geocoding and routing.

Nice to have

• Knowledge of Python, Ansible and Bash scripting.
• Experience with Docker.
• Knowledge of OSM data-processing tools (eg. osmium).
• Familiar with the OpenStreetMap data structures (tagging schema).
• Machine learning experience.

What we offer

• Hourly fixed salary based on your experience.
• Annual personal performance bonus (can be multiples of the monthly salary).
• Flexible working hours.
• Work remotely or from our beautiful office in Brno (Czech Republic).
• Hardware equipment (laptop and widescreen external LCD).
• Work with interesting clients and major companies from all around the world.
• Long-term work on innovative projects & space for professional growth.
• Regular team-building events in the Czech Republic and Switzerland.
• Friendly team.
• See all the work benefits here.

**About MapTiler

FactSet is looking for a talented senior software engineer to join a newly expanded Design System engineering team based in São Paulo, Brazil. The new team joins the existing cross-functional Design System team, with engineering members part of the Client Experience and Engagement Engineering department within the Platform Infrastructure Engineering horizontal. The Design System team is responsible for shared infrastructure that focuses on providing engineers, product developers, and designers with the tools to create modern and consistent user interfaces for their applications. As a member of this newly expanded team, you will partner closely with the existing engineering team members and other cross-functional members of the broader Design System team to operate as one. In this role you will increase developer efficiency across the company, leading to better solutions for FactSet’s clients. Some of the projects that we work on to achieve this goal:

• Design System component library – FactSet's next-generation UI framework for building responsive and accessible applications

• Grids – making tabular data accessible for all

• Charting – modernizing the charting experience

• Generative AI – improving self-service support for engineering consumers

In this role, you will:

• Collaborate with cross-functional teams, including product managers, designers, open-source developers and other stakeholders, to understand business requirements, define project scope, and ensure quality standards are met

• Drive the end-to-end software development lifecycle, ensuring timely and efficient delivery

• Provide hands-on technical expertise and guidance in designing, developing, and implementing software solutions using TypeScript and Vue.js

• Conduct regular code reviews to maintain code quality, adhere to best practices, and ensure compliance with coding standards

• Stay up-to-date with emerging web development technologies and industry trends, evaluating their potential impact on the team’s projects and making recommendations accordingly

• Must work hybrid at least 2 day per week

• Must be Fluent in English both Verbal & Written

Over time, you will find opportunities to impact the larger FactSet engineering community. For example, by working with the Web Guidance Group or other cross-team working groups, you will have visibility into how FactSet’s teams make decisions and the ability to present your perspective.

Minimum Requirements:

• 3+ years of experience working professionally as a Software Developer building web applications

Critical Skills:

• A passion to provide value by enabling other developers

• In-depth knowledge of Web Content Accessibility Guidelines (WCAG)

• Strong fundamental knowledge of HTML, CSS, JS, and WAI-ARIA in the browser

• Experience using JavaScript, TypeScript and a modern web framework such as Vue or React

Highly Desired Skills:

• In-depth knowledge of Web Content Accessibility Guidelines (WCAG)

• Strong fundamental knowledge of HTML, CSS, JS, and WAI-ARIA in the browser

• Experience with build tools and server-side JS in NodeJS

• Experience with automated testing including browser-based tests for accessibility

• Experience with CI/CD automation and at least one cloud provider

• Experience with Scrum, Kanban or Agile software development in general

• Experience working with or contributing to open-source projects

Education:

• Bachelor's degree in Computer Science, a related technical field or equivalent experience

Who we are

ren ( 仁 ): The Confucian virtue denoting the quality of being altruistic

Ren Systems is on a mission to help people strengthen their professional relationships to achieve their goals and create more value. We’re a distributed team with hubs in New York, Raleigh, and Zurich, and we're backed by top VCs and strategic investors such as ZoomInfo, JLL Spark, Camber Creek, and Contour Ventures.

With Ren's relationship intelligence, global organizations generate and win deals. By understanding the objectives of dealmakers and sales professionals, and syncing with CRM, calendar, and contacts, Ren saves you time by automating research, meeting prep, and high-impact outreach to help you cut through the noise.

About the Role

As a full-stack engineer with a user-centric focus, you will be reporting directly to the CTO and working in a small team of machine learning experts, designers, full-stack frontend, backend and iOS developers. The team is based around UTC+2h. You'll be responsible for various parts of the product, with a focus on backend and web frontend.

If this opportunity excites you, we encourage you to apply even if you do not meet all of the qualifications.

What You Bring

• You’re an excellent communicator (English written and spoken) and an independent builder that thrives in fast-growing distributed work settings.

• You are familiar with or willing to learn our stack: Python/FastAPI and Typescript/React

• Bonus: Experience with AWS

• Bonus: Experience with TDD (Test Driven Development)

• Bonus: Experience with user analytics

• Bonus: You have contributed to open source projects.

What we offer

• Our values guide how we work together and treat each other. Read about our Vision, Mission and Values and tell us about your favorite value in your application.

• We’re a distributed team with hubs in New York and Zurich. We regularly meet in our hubs and some of the coolest places in the world.

• We help you set up your home office and offer co-working memberships in your area. We value freedom and flexibility to work from wherever we want and set our own schedule.

• We care about your health & wellness and offer generous vacation policy and additional perks to make your work & life at Ren exceptional.

How to apply

If you're curious to learn more, please reach out to us. We will do our best to respond as soon as possible. We're excited to hear from you!

We’re growing! Don't miss the opportunity to be part of our global team as our Lead Machine Learning Engineer.

**About us:

At iVisa we believe that traveling should be simple. That’s why over 1 million travelers have chosen us to facilitate their passports, visas, and other documents. We are the easiest, fastest, and simplest solution in the market. Our company is growing 80% year on year. We know our biggest strength is our people and we’re looking for the right new team members to help propel our culture and achieve our goals. Above all else, we always have fun!

We are looking for a Lead Machine Learning Engineer to lead the development and deployment of cutting-edge AI solutions. This role requires a strategic thinker with deep expertise in Large Language Models (LLMs) and computer vision to drive innovation and scalability across our automation initiatives. As a leader, you will guide a team of engineers, shape technical strategy, and ensure best practices in AI/ML development.

**Why iVisa?

• Collaborative, friendly, and erse culture: We foster an inclusive and vibrant atmosphere, featuring a dynamic and international environment with flat hierarchies and exceptionally amiable colleagues.
• Work from anywhere: We embrace a remote-first approach, yet we offer the opportunity for periodic in-person gatherings.
• Mental wellness sessions: Our sessions are led by certified psychologists to support your mental health.
• Training Allowance: Access an outstanding learning platform to facilitate your professional growth.
• Extended Family Leave policy: Our policy covers all birthing parents, non-birthing parents, and adopting parents.
• Thrive in a highly tech-savvy company equipped with cutting-edge tools and the power to make a substantial impact.
• Join us in our commitment to the planet and sustainability: For every iViser, we plant one tree, allowing you to contribute to our environmental initiatives.
• Rest and Relaxation: We offer flexible PTO for all employees.

**As a Lead ML Engineer you'll be responsible for:

• Lead the design, development, and deployment of advanced AI-driven applications leveraging LLMs and computer vision.
• Drive technical strategy and best practices for implementing LLMs across various products and services.
• Collaborate with cross-functional teams to integrate AI/ML capabilities into business solutions.
• Ensure scalability, efficiency, and reliability of machine learning applications in production environments.
• Stay at the forefront of advancements in AI, deep learning, and cloud-based ML solutions to continuously enhance our technology stack.
• Mentor and guide engineers, fostering a culture of technical excellence and innovation.
• Oversee the entire ML lifecycle, from research and prototyping to deployment and monitoring.
• Optimize model performance, inference speed, and cost efficiency for real-world applications.

**What will make us choose you?

• Extensive experience in AI and machine learning, particularly with LLMs and computer vision.
• Proven track record of leading and mentoring ML engineers in a fast-paced environment.
• Strong programming skills in Python and experience with ML frameworks such as TensorFlow, PyTorch, and Hugging Face Transformers.
• Expertise in deploying AI/ML models in cloud environments (AWS, Azure, or GCP).
• Strong knowledge of ML Ops, CI/CD pipelines, and model monitoring in production.
• Experience optimizing large-scale machine learning systems for efficiency and performance.
• Strong problem-solving abilities with an emphasis on algorithmic thinking and data-driven decision-making.
• Excellent communication and leadership skills, with the ability to drive cross-functional collaboration.

This role offers the opportunity to work on high-impact AI solutions while leading a talented team in a rapidly evolving field. If you're passionate about AI and want to drive innovation at scale, we'd love to hear from you!

iVisa ensures equal employment opportunity to all employees and applicants without discrimination or harassment based on race, religious creed, color, age, sex, sexual orientation, gender identity, national origin, marital status, or medical condition.

Senior Full-Stack Developer

Patent Bots provides SaaS tools to automate the work of patent attorneys.  The founder is a patent attorney and a software developer.  We are profitable and bootstrapped.  We are looking for a well-rounded, product-focused software developer to help us to continue to build our products.  

Product usability is really important for us and our customers love us for it.  A key trait that we are looking for is a person who gets really excited about building products that end users love.

By well-rounded, we mean:

• Technically skilled.  You write great code, documentation, and tests.  Things like mocking are easy for you.
• Product focused in that you are always thinking about how to best meet our users needs.  You don't need to be a UX/UI person, but you think about it.
• Security aware.  We process confidential info of customers so we need to follow best practices.
• Cloud aware.  You don't need to be a dev ops person but you should have a solid understanding of the capabilities and limitations of cloud tools.

Our app is PaaS (App Engine and ElasticBeanstalk) and our code base is mostly backend using Python/Flask.  Javascript/jQuery is used where needed such as to improve the user experience and for our Word add-in (we could migrate to a more modern js framework in the future).

We use AI, machine learning, and natural language processing in our products.  You do not need to have experience with this, but if that is something you would like to learn, there are plenty of opportunities for that.

Our goal is to have you grow into a leadership role to lead our software development efforts under the direction of the CEO.  The CEO is a patent attorney and our products relate to automating the work of patent attorneys.  

Who You Are

• A well-rounded, product-focused software developer who thrives on building products that end users love.
• A strong believer in writing quality code with documentation and tests.
• Expert in Python, with at least 5 years of experience, and have a strong grasp of Flask, JavaScript, jQuery, HTML/CSS, and mocking.
• Security-aware, understanding the importance of following best practices when processing confidential customer information.
• Cloud-aware, with a solid understanding of the capabilities and limitations of cloud tools, even if you are not a dev ops expert.
• Experience deploying apps to Google Cloud or AWS.
• Proficient in written and spoken English and can work independently with minimal supervision.
• Have a desire to grow into a leadership role, leading software development efforts under the direction of the CEO.

Benefits

• Competitive salary, 401k matching, and health insurance.
• Opportunity to make a significant impact on a rapidly growing company.
• A fully remote, collaborative and talented team with a supportive culture.

Company Vision

Our vision is to streamline patent practice so patent attorneys can excel and thrive.  25% of patent attorneys are already using Patent Bots and we want to expand so that all of them are using our tools! 

Company Culture

These company principles are to aid in decision making as a company.  When making hard decisions, these principles should help point us in the right direction.

• Keep it simple – From product design to customer contracts and how we operate as a company, eliminate complexity to focus on what is important.
• Value our customers – Our customers are our employers and investors.  We need to provide great value to them so that they are happy to pay for our products (though it is ok to fire bad customers).
• Employee growth and satisfaction – We want employees who believe in our principles, are a great match for their role, love what they do, and have an impact on the success of the company.
• Profit-led growth – Consistency is more important than speed.  Doing the right thing is superior to doing a lot of things.  Stay aligned with our customers.
• Product-led growth – Be so good they can’t ignore us.  Our customers are our best sales people.
• Be different – Be deliberate and don’t do things just because other people do them.  Be authentic.
• Don’t be boring – We need to stand out among all the noise.  Everything we do in public should provide value to the audience.

Hiring Process

• Our first step is to ask applicants to fill out a Google form with some relatively easy questions.  Our goal here is to be able to easily weed out applicants who apply without reading the job post or who are not qualified.
• A short screening interview for qualified candidates.
• An interview with the founder who is also the primary developer.
• A take-home programming challenge that should take about an hour.
• A joint-coding session with the founder.
• Short interviews with our other two employees for a culture fit.
• Reference checks.

We seek an experienced Staff Python Software Engineer to join our fully remote team. In this role, you will be part of the squad responsible for developing and maintaining our Python client libraries-APIs for logging and querying model-building metadata. As a key contributor, you will shape their architecture, optimize performance, and ensure seamless integration with machine learning workflows. This role requires a deep understanding of Python, user-friendly API design, and performance optimization to deliver a robust and scalable experience for our users.

Our tech stack (the bigger the overlap, the better):

• Languages: Python.
• Cloud platforms: Microsoft Azure, Google Cloud Platform (GCP).
• Others: Protobufs, gRPC, Swagger.

Responsibilities:

• Develop and Maintain the Python Client Library: Contribute to the design, development, and maintenance of our Python API for logging and querying model-building metadata.
• Code Quality & Reviews: Ensure high-quality, maintainable, well-documented code through active development and rigorous code reviews.
• Technical Leadership: Drive 1-2 key initiatives, working closely with 3-5 engineers to ensure smooth execution, clear task breakdowns, and effective communication of progress and challenges.
• Architecture & Performance Optimization: Design scalable and efficient solutions for API interactions, ensuring high performance and reliability in large-scale ML workflows.
• Innovation & Best Practices: Identify and propose enhancements to the Python client library and its surrounding ecosystem to improve user experience and performance.

You might be a fit if you have:

• Minimum of 6 years of professional software development experience.
• Strong proficiency in algorithmic thinking and problem-solving.
• Passion for performance optimization, both on architecture & component level.
• Concise and logical communication, both written and verbal.
• Ability to balance business goals with technical purity, especially when adapting to high-paced, shifting priorities.
• Experience in user-friendly API design.
• Experience in leading 3-5 people engineering teams.

We offer:

• Flexibility: 100% remote work with offices (co-works) in Warsaw/Wrocław/Poznań/Kraków available and flexible working hours;
• Share in our success: Participate in the Employee Stock Option Plan and be part of our growth journey;
• Time off: 20 paid service-free days per year;
• Ownership and impact: Space to take action, bring your ideas to life, and make a real impact.

The Role

Join us as a Backend Engineer and be a key contributor in building an Experience Marketplace that helps thousands of people to explore new adventures. As a crucial member of our cross-functional team, your expertise in backend development will play a pivotal role in enhancing our product step by step, bringing us closer to our mission of becoming the most trusted experience marketplace in Europe. We invite you to embrace this role with high agency and dedication, as we collectively strive to elevate the quality and velocity of our backend and overall product. If you're growth-driven, passionate about your work, care about building a great product and thrive on bringing fresh ideas to life, you are the ideal candidate for us.

What We're Looking For

• 5+ years experience with C# and .Net Core 6+/.Net Framework.
• Extensive experience in building web applications with ASP.NET Core.
• Natural flair for using AI-tools to boost efficientcy
• Proficient in designing and developing Web APIs, adhering to best practices and principles.
• Strong analytical and problem-solving skills.
• Solid experience in both MS SQL and MySQL databases.
• Strong knowledge of using Redis.
• Experience in event-driven and scalable systems. (AWS SNS, SQS).
• Good in containerization using Docker and K8s for container orchestration and management.
• Experience with CI/CD.
• Experience working with ORMs - EF/EF Core.
• Strong communication skills in english - both written and spoken
• Value the boundaries of Remote-first and which requirements it implies for a team to work like that - hence you need to have clear experience working remote!
• Find refactoring and improving existing systems just as motivating as starting from scratch

Nice-to-Have skills

• Hands-on experience with Umbraco and uCommerce.
• Experience with NPoco.
• Proficient in serverless computing using AWS Lambda for executing code without provisioning or managing servers.
• Familiarity with ElasticSearch for efficient search functionality in applications.

Responsibilities

• Be part of cross-functional product teams to deliver solutions that improve our overall product experience.
• Build, test and deploy production quality code.
• Spare with members of the TECH team to ensure we deploy the most feasible solutions possible.

Our Values

• Team first: We value collaboration across functions and we expect everyone to participate in that with clear communication and agency
• A mindset of excellence: We accept that we can’t make perfection. However, as we all embrace our philosophy of improving 1% each day, we know we are going to do great things together.
• Autonomous A-player: Because we are a small team of highly dedicated an iniduals, we expect everyone who joins to be the same.

What We Offer

• Remote-First Culture: We relish the flexibility and convenience of working from anywhere.
• Career Growth: Seize the opportunity to become an early member of a scale-up company building an Experience Marketplace
• Collaborative Team: Thrive in an environment where teamwork and collective achievements are celebrated.
• A Team of Dedicated Iniduals: Join forces with a group of highly motivated people, all committed to excellence and ownership.

Facts About the Position

• Full-time (40 hours weekly).
• Freedom to work from anywhere: We value the freedom to work from anywhere. However, we expect you to have your primary residency within EU timezones. Or you are welcome to work from our Hub in Aarhus, Denmark.
• Salary range: €5,000 - €5,600 per month.
• Applications deadline: When the right candidate is found

RootstockLabs is looking to hire a Technical Writer to join their team. This is a full-time position that can be done remotely anywhere in Europe.

Position Overview: The Technical Lead is responsible for managing multiple development squads, ensuring efficient delivery of technical projects while maintaining code quality nd team productivity. This role also emphasizes team building, from recruiting to developing engineers.

**Key Responsibilities

• Lead and mentor multiple development squads (4–6 engineers per squad)
• Oversee technical implementation of projects across squads
• Establish development standards, best practices, and coding guidelines
• Collaborate with product managers to define technical requirements
• Manage sprint planning, execution, and retrospectives
• Conduct code reviews and ensure quality standards
• Identify and resolve technical bottlenecks and risks
• Focus on building and strengthening teams (recruitment, training, retention)

**Required Skills & Experience

• 7+ years of software development experience
• 3+ years in a technical leadership role
• Strong programming skills in relevant technologies
• Experience with Agile methodologies and development practices
• Proven track record of delivering complex software projects
• Excellent problem-solving and communication skills
• Bachelor's degree in Computer Science or related field

**Join us and get ready to Soar!

**Role purpose:

As a Security Architect you will be responsible for designing and implementing the company's security architecture, ensuring the protection of systems, data, and assets from threats and vulnerabilities.

**

• Design and maintain the security architecture for all systems
• Develop security standards, patterns, and best practices
• Conduct security risk assessments and threat modeling
• Define security requirements for new systems and features
• Review code and architecture for security vulnerabilities
• Implement security controls and mitigations
• Stay current with emerging security threats and technologies
• Collaborate with development teams to implement secure designs

**

• 7 years of experience in IT security
• 3 years in security architecture or similar role
• Strong knowledge of application security, network security, and cloud security
• Experience with security frameworks and compliance standards
• Understanding of cryptography, authentication, and authorization
• Experience with secure development practices
• Security certifications CISSP, CSSLP, etc.) preferred
• Bachelor's degree in Computer Science, Cybersecurity, or related field.

**Join us and get ready to Soar!

Reddit is hiring a remote Staff Data Scientist, Ads Experimentation. This is a full-time position that can be done remotely anywhere in the United States.

Reddit - The front page of the internet.

**

**

**

We're looking for an exceptional Founding Engineer who thrives on building innovative solutions from scratch. You'll take ownership of our core technology development, initially focusing heavily on backend development for AI-driven vendor communication and automated procurement workflows.

Our vision goes beyond simple process automation: we aim to establish a buyer-side AI agent and procurement platform, ultimately preparing for a future where AI-to-AI transactions become the norm.

Your work will directly impact our pilot customers, shaping their experience through rapid feedback loops, agile iterations, and user-centric product enhancements.

**

• System Architecture & Rapid Prototyping: Design lean, scalable, and extensible architecture suited for early-stage startups. Rapidly prototype solutions to validate hypotheses with pilot customers.
• AI-driven Backend Development: Implement and optimize backend systems integrating cutting-edge AI technologies (LLM, Generative AI) for automating vendor interactions and procurement workflows. Develop an autonomous agent for vendor research and meeting coordination, combining LLM with Retrieval Augmented Generation (RAG) to understand requirements and propose optimal solutions.
• End-to-End Ownership: Handle integrations (STT, LLM, TTS, Zoom API), manage deployment pipelines (CI/CD), and optimize system scalability and responsiveness. Our core infrastructure relies on AWS (Lambda, Docker, Kubernetes), PostgreSQL, and Vector DB.
• Pilot Customer Collaboration: Directly collaborate with early customers, gather rapid feedback, and iterate swiftly to refine product experience.

**

Required:

• Strong engineering foundation (CS fundamentals, software architecture).
• Proven backend development experience (Python, Node.js, APIs, cloud infrastructure).
• Proficient in React, TypeScript, and Next.js for building modern web applications.
• Familiarity with modern cloud platforms (AWS/GCP/Azure).
• Exposure or deep interest in cutting-edge AI technologies, especially Large Language Models (LLMs).
• Hands-on experience integrating third-party APIs and rapid prototyping.
• Startup mindset: resourceful, agile, able to thrive under ambiguity.
• Excellent problem-solving skills and proactive approach to challenges.
• Strong communication skills in English.

**

• Experience designing and implementing evaluation and monitoring frameworks for AI-based workflows.
• Experience in lightweight development using Supabase and Vercel.
• Experience with speech recognition (STT), text-to-speech (TTS), conversational AI platforms.
• Experience in real-time communication using WebSocket and WebRTC.
• Previous startup or early-stage product experience.
• Experience working closely with pilot customers to iterate rapidly.
• Extensive experience utilizing AI-driven editors (such as Cursor) for software development.

**

• Work alongside a top-performing CEO with a strong sales background and a CTO with global development experience across countries.
• We value ownership and operate with a lean, elite team, giving you direct influence on both product and technical strategy.
• As a Founding Engineer, you can grow into a VP of Engineering role in the future.

**

• Impact & Ownership: You’ll have direct influence on the company's product and tech strategy from day one. We place strong emphasis on ownership and a hands-on approach.
• Future Compensation Growth: Currently at $3k/month fixed, but we plan to increase compensation or offer equity once we close future funding rounds.
• Full Stack AI Exposure: Unique opportunity to gain comprehensive experience from backend system architecture to customer-facing product interactions.
• Fast-Growth Environment: Learn and grow with the business, scaling your skills and expertise quickly.
• Remote Collaboration: We use Slack and Notion for daily communication and documentation, ensuring smooth, async-friendly workflows.

If you’re a passionate self-starter ready to pioneer AI-powered solutions at the ground floor of an exciting startup, we want to hear from you!

Join us, and let’s redefine vendor communication with AI together.

Why Work for Us?

• Growth opportunities
• Company events; tight-knit company culture
• Health benefits
• We’re a fully remote company; work from home

Job Summary

We’re seeking a project manager with the technical knowledge and organizational skills to oversee various civil and structural engineering projects from the quoting stage to final billing. Exactus works with multiple engineering partners to deliver these projects. This technical position will involve holding our engineering partners accountable to ensure projects are submitted on time and within budget, and that our clients are happy.

Qualifications And Skills

• Has 3+ years of experience related to civil and/or structural engineering
• Working experience with Canadian Building Codes (OBC, NBCC) and/or American Building Codes (IBC, ASCE)
• Proficiency with AutoCAD (or similar software)
• Experience with structural analysis software such as ETABS, RISA, and WoodWorks is preferred
• Client & Relationship Management – Proven ability to build strong client relationships, ensure satisfaction, and effectively communicate technical concepts to non-technical stakeholders.
• Technical & Project Oversight – Experience managing third-party engineering teams, overseeing technical implementations, and driving projects to completion.
• Problem-Solving & Execution – Skilled at anticipating challenges, troubleshooting issues, and implementing effective solutions within complex technical environments.

Important Notes:

Please refrain from reaching out to our staff via phone or email other than as instructed above. We will be busy reviewing applications and we will be in contact with you if we need to ask questions or arrange a phone call/virtual meeting. Exactus Energy is an equal opportunity employer and encourages applications from all qualified iniduals. Accommodations are available on request for candidates taking part in the selection process.

**

• Global connectivity, minus the roaming fees. We're rethinking how people stay connected without the hassle and limitations of traditional telcos.
• A telco built for tomorrow. Software-first and AI-native, designed to feel modern and harness the latest in Earth and space tech.
• Momentum speaks volumes. With thousands on our waitlist and a live alpha, we’re seeing extraordinary traction and growth.
• Experienced team with bold ambitions. Our team previously scaled a consumer app to 50,000 users and is ready to go much further.

**

• Join us as a Backend Engineer where you’ll be at the heart of designing and building our backend services using NestJS, and GraphQL.
• You’ll own the entire development lifecycle—from concept and architecture to deployment and iteration—and help drive our commitment to automation and CI/CD best practices.
• Over time, we’ll expand the team around you, giving you a chance to grow into a leadership role.
• If you love seeing your work power magical user experiences (and don’t mind occasionally ing into animations), this is the role for you!

**

🔍 What we’re looking for

• 3+ years of Node.js engineering experience: You’ve tackled complex problems and delivered robust backend solutions.
• Infrastructure chops: You’re comfortable with AWS and Terraform, and you have a knack for designing and maintaining scalable services.
• Database expertise: You’re no stranger to PostgreSQL (or similar RDBMS) and can optimize queries efficiently.
• Microservices & Security: You understand the core concepts of microservices architecture and prioritize secure development practices.
• Automation mindset: You have familiarity with CI/CD pipelines and actively seek ways to streamline and automate processes.
• Curiosity & adaptability: You love exploring new technologies, frameworks, and tools—stepping into the unknown doesn’t scare you.
• Team player: You’re genuine, humble, and thrive on collaboration and open communication.

**

• Startup or telco experience: You’re used to the fast pace and ambiguity of early-stage companies or have dabbled in the telco sector.
• High-availability environments: You’re comfortable designing and maintaining solutions that need to stay up 24/7.
• Message queues, caches, job queues: You’ve worked with systems like RabbitMQ, Redis, or other queue/caching technologies.

**

• As long as you’re fun to be around, we want to work with you, no matter your gender, skin colour, sexual orientation, culture or religion
• Everyone is encouraged to bring their authentic self to work, which also means you’re encouraged to share as much (or as little) about your personal life as you want
• If you don't have a degree, that's not a problem! We believe what you've worked on and achieved is way more important

**

• By joining Popcorn as an early employee, you have unrivalled autonomy and ownership of our most valuable, user-facing asset—product
• We offer a fully flexible remote work setup, so you’re welcome to work from home or anywhere you’re comfortable. If you prefer an office environment, we’re happy to cover coworking space costs. Plus, we come together every few months for hackathons and meetups to keep that personal connection strong
• The tools you need: your choice of laptop, productivity software and desk set-up
• And of course, a virtually endless supply of popcorn!

**

• Apply by submitting this form: https://forms.gle/4nrRS1rRQRgiqaEL9
• We'll reach out with the next steps to selected candidates

About Mangrove

Mangrove is an order book DEX allowing liquidity providers to attach smart contracts to their offers. Linking arbitrary code with on-chain trading unlocks a new design space for DeFi. We are backed by some of the best investors in the ecosystem and as a team, we value expertise, creativity, autonomy, and knowledge sharing.

Mangrove is looking to hire a Senior Frontend/Blockchain Developer. This is a full-time position in Paris, however, remote can be an option.

What you’ll do

As a Frontend Developer at Mangrove, you will play a crucial role in building and optimizing the user interface for our decentralized exchange (DEX). You will be responsible for crafting seamless, intuitive, and high-performance experiences that enhance the usability and functionality of our platform.

We are looking for someone who can bridge design and development, with a strong understanding of DeFi, DEXs and advanced trading interfaces. They may also occasionally work on other aspects of the project if needed.

Requirements:

• Extensive experience in React, and modern frontend frameworks
• Strong experience building complex Web3 applications and interacting with smart contracts
• Deep understanding of DEX mechanics, perpetual trading, and DeFi protocols
• Experience in optimizing UI/UX for performance and accessibility
• Familiarity with blockchain infrastructure and EVM interactions
• Experience operating a live protocol/product
• Able to work within the CET (Central European Time) timezone for team meetings
• Excellent verbal and written communication in English

Bonus points:

• Experience with backend integrations and full-stack development
• Passion for DeFi, trading, and Web3 innovation
• Have teamwork, communication and organizational skills
• Willingness to constantly learn & improve, challenging yourself to stay at the top of your game

What does Mangrove offer?

• Significant ownership and autonomy in shaping our frontend and user experience
• Competitive annual salary + tokens
• Flexible schedule and remote-friendly environment
• The opportunity to work with a highly experienced and erse team
• Team retreats held several times a year around the world
• Conferences and continuous learning opportunities
• Career growth and professional development within a cutting-edge DeFi project

Want to apply?

Fast & efficient hiring process:

1. Apply – Send us any project you’re proud of (GitHub, portfolio, CV, etc.)
2. Intro call – 20-min chat to discuss your experience & fit.
3. Technical test – A hands-on challenge tailored to frontend Web3 development.
4. Test review & final interview – Meet the team and e deeper.
5. Offer & welcome to the team!

Send your application to [email protected].

Links

• Website
• Documentation
• Twitter
• LinkedIn
• GitHub

Equal Opportunity

Mangrove is committed to fostering a erse and inclusive work environment. We encourage all types of profiles to apply and do not discriminate on the basis of race, national origin, religion, gender, sexual orientation, marital status, disability, social origin, or age.

We seek an experienced Staff Python Software Engineer to join our fully remote team. In this role, you will be part of the squad responsible for developing and maintaining our Python client libraries-APIs for logging and querying model-building metadata. As a key contributor, you will shape their architecture, optimize performance, and ensure seamless integration with machine learning workflows. This role requires a deep understanding of Python, user-friendly API design, and performance optimization to deliver a robust and scalable experience for our users.

Our tech stack (the bigger the overlap, the better):

• Languages: Python.
• Cloud platforms: Microsoft Azure, Google Cloud Platform (GCP).
• Others: Protobufs, gRPC, Swagger.

Responsibilities:

• Develop and Maintain the Python Client Library: Contribute to the design, development, and maintenance of our Python API for logging and querying model-building metadata.
• Code Quality & Reviews: Ensure high-quality, maintainable, well-documented code through active development and rigorous code reviews.
• Technical Leadership: Drive 1-2 key initiatives, working closely with 3-5 engineers to ensure smooth execution, clear task breakdowns, and effective communication of progress and challenges.
• Architecture & Performance Optimization: Design scalable and efficient solutions for API interactions, ensuring high performance and reliability in large-scale ML workflows.
• Innovation & Best Practices: Identify and propose enhancements to the Python client library and its surrounding ecosystem to improve user experience and performance.

You might be a fit if you have:

• Minimum of 6 years of professional software development experience.
• Strong proficiency in algorithmic thinking and problem-solving.
• Passion for performance optimization, both on architecture & component level.
• Concise and logical communication, both written and verbal.
• Ability to balance business goals with technical purity, especially when adapting to high-paced, shifting priorities.
• Experience in user-friendly API design.
• Experience in leading 3-5 people engineering teams.

We offer:

• Flexibility: 100% remote work with offices (co-works) in Warsaw/Wrocław/Poznań/Kraków available and flexible working hours;
• Share in our success: Participate in the Employee Stock Option Plan and be part of our growth journey;
• Time off: 20 paid service-free days per year;
• Ownership and impact: Space to take action, bring your ideas to life, and make a real impact.

As an Integrations Engineer, you will play a pivotal role in growing the Axelar Ecosystem by adding connections to new blockchains. You will collaborate with the product and protocol teams to prioritize integrations. You will also become intimately familiar with the Axelar protocol and stack to help facilitate new chain integrations, providing necessary guidance to external teams that utilize the Axelar network to connect new chains.

Your primary responsibility will be to take lead on an integration and progress it through different environments all the way to production. With each integration you will improve the tooling and processes around integrations including internal deployments, testing frameworks, deployment scripts, security, monitoring & alerting as well as libraries to interact with the chain and the deployed smart contracts that support interchain communication.

Your responsibilities

• Take ownership of the end-to-end integration process for new blockchains
• Manage the deployments and upgrades of Axelar’s smart contracts & core network to support integrations.
• Improve stability and reliability of in-house DApps.
• Build and expand our monitoring capabilities to ensure our stack, as well as that of public validators, runs smoothly.
• Evaluate and help integrate new security focused protocols.
• Strengthen our security posture and refining protocols for offline signing.
• Improve the infrastructure and deployment to improve team’s agility and velocity.
• Forge solid relationships within Interop Labs to fully understand the needs in the ecosystem whilst working in an agile environment.
• Collaborate with external teams that integrate with the Axelar network.

Your profile

• Experience interacting with smart contracts.
• Scripting and tooling experience preferably in Javascript/Golang
• Experience managing a blockchain network and coordinating upgrades.
• Familiarity with containers and Kubernetes in a cloud environment.
• Experience with monitoring and alerting tools (Datadog, Grafana, Prometheus, etc.).
• Familiarity with modern CI/CD tools, such as GitHub Actions.
• Security first coding and deployment mindset.
• Understanding of blockchains / DeFi as a user is a plus.
• Strong sense of ownership, with the ability to lead and share knowledge to reach solutions as well as the keenness to learn.
• You enjoy being hands on, being a self starter that thrives well in ambiguity.
• A problem solver at heart that can envision successful outcomes.

Why us?

• Autonomous, distributed environment with the opportunity to work collaboratively in a erse team worldwide.
• The scope to contribute to high-impact work and make a difference in a decentralized protocol.
• The chance to challenge yourself while learning heaps of stuff in the process.
• Unlimited time off throughout the year to rest and recharge.
• Competitive compensation with stock options, experiencing growth from the initial phase.

About us

Interop Labs builds interoperability technology.

Interoperability between blockchains is crucial technology infrastructure for the growth of Web3 and the advancement of internet technology as a whole. Interop Labs is the initial developer of Axelar Network - the programmable Web3 interoperability platform, scaling the next generation of internet applications to billions of users. Axelar network’s key attributes are programmability, security and scalability.

Axelar has raised over $100 million from leading VCs including DCVC, Galaxy, Polychain, Dragonfly, Coinbase, and more. Its erse partner ecosystem spans industry heavyweights such as Ripple, Circle, dYdX, Uniswap, JPMorgan, Deutsche Bank, Microsoft, and others—underscoring Axelar’s unique market position and opportunity in unifying stacks between traditional finance and decentralized ecosystems. Axelar protocol was founded by Sergey Gorbunov (MIT PhD, UWaterloo Professor) and Georgios Vlachos (MIT MSc, Math Gold Medalist), who previously helped to build and launch Algorand.

Twilio is hiring a remote Staff Machine Learning Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Twilio - Build the future of communications.

Gauntlet is a leader in Our mission is to drive adoption We seek a research manager to lead client-facing research under the Applied Research organization. This role is pivotal in providing deep quantitative expertise to top DeFi protocols and ecosystems including Uniswap, Near and Movement on how they can grow, optimize, and de-risk mechanisms within their various system. This person will lead a team of researchers to analyze on-chain and off-chain data, develop models, and provide actionable insights into the rapidly evolving crypto and Web3 ecosystem. This role requires deep expertise in blockchain analytics, quantitative research, statistical modeling, and strong.

Responsibilities

• Own multiple clients by developing research roadmaps and managing the team responsible for executing these roadmaps at a high-quality bar.
• Support, grow, and develop a team of high-performing researchers capable of tackling DeFi’s most complex problems.
• Perform in-depth mechanism design and research to develop the next generation of DeFi mechanisms and patterns.
• Develop predictive models, statistical analyses, and machine learning algorithms to extract insights into blockchain and market data.
• Work with large-scale structured and unstructured datasets, ensuring data integrity and efficient processing.
• Publish research reports and insights on blockchain data trends, protocol performance, and economic models.
• Attend international conferences to present Gauntlet’s research to the larger DeFi and Web3 community.

Qualifications

• 7+ years of experience in research, data science, or mechanism design with at least 2+ years of experience managing high-performance teams.
• Strong communication skills, both verbal and written, along with the ability to operate in a client-facing role.
• Deep understanding of DeFi and crypto topics either through professional work or personal interest and experience.
• Proven mentorship capacity & experience.

Bonus Points

• DeFi, crypto, or blockchain development experience (e.g. Web3, Hardhat/Truffle, Solidity, etc..)

Benefits and Perks

• Remote first - work from anywhere!
• Competitive packages with the added opportunity for incentive based compensation
• Regular in-person company retreats and cross-country “office visit” perk
• 100% paid medical, dental and vision premiums for employees
• Laptop, monitor, keyboard and mouse setup provided
• $1,500 WFH stipend upon joining
• $100 per month reimbursement for fitness-related expenses
• Monthly reimbursement for home internet, phone, and cellular data
• Unlimited vacation policy
• 100% paid parental leave of 12 weeks
• Fertility benefits

Please note at this time our hiring is reserved for potential employees who are able to work within the contiguous United States and Canada. Should you need alternative accommodations, please note that in your application.

The national pay range for this role is $180,000 - $220,000 plus additional On Target Earnings potential by level and equity in the company. Our salary ranges are based on paying competitively for a company of our size and industry, and are one part of many compensation, benefits and other reward opportunities we provide. Inidual pay rate decisions are based on a number of factors, including qualifications for the role, experience level, skill set, and balancing internal equity relative to peers at the company.

About Codeable

Codeable connects a community of elite WordPress development experts from around the world with businesses that need a WordPress site built, developed, maintained, fixed, or optimised. We’re the only WordPress-exclusive services platform and community, with over 500 freelance developers and teams, delivering projects of all sizes to clients globally.

Our mission is to build the most vibrant WordPress developer services community and create a better way of working for all parties in the WordPress ecosystem when it comes to WordPress websites, whether that’s for developers, clients, or partners. And building the technology for the platform is where you come in.

We're looking for an experienced back-end engineer to join our (fully distributed) Platform & Product team to help take the platform on to the next level, supporting the growing needs of the Codeable business and the client, expert and partner communities who we work with. So if you're an experienced back-end engineer with a special love for Ruby (and Rails) and you like the sound of our mission, then read on. 

Role summary

We are looking for a performance-minded back-end engineer with an eye towards writing well-designed, maintainable code who will be responsible for managing and maintaining our back-end system(s) and operating related services connected to it and make sure they (become and) stay performant. 

Your primary focus will be the development of server-side logic, ensuring high performance and responsiveness of our back-end system and related services, like our databases (PostgreSQL, Redis), background jobs system (Sidekiq), and other services (internal and external).

Since our backend system is not very new, there are a lot of opportunities to make it better and scalable so we can speed up the growth of our business worry-free. If you are someone who is not afraid to grab a system by its cables and get your hands dirty then you’re at the right place.

Key responsibilities

• Collaborating within our product team to develop new features, fix bugs, and reduce technical debt (you will be involved in the whole application lifecycle)
• Defining and communicating technical requirements
• Building high-quality systems that can be (re)used and extended in the future
• Helping set the design/architectural guidelines to make sure our codebase is improving
• Making sure our back-end is scalable (fast response times, optimized DB queries, …)
• Troubleshooting, debugging, and fixing production issues

Required qualifications

• 5+ years of experience with Ruby and Rails in production on a decently sized project
• Experience building & growing web applications, APIs, services
• In-depth experience of back-end APIs (RESTful web services)
• In-depth experience of writing tests: unit, integration, …
• Very good understanding of databases: query performance, indexes, migrations (PostgreSQL)
• Experience working with background processing (Sidekiq) and how to optimize it for good performance
• Ability and desire to produce modular, maintainable code
• Solid understanding and experience of Git (branching workflows, managing conflicts, …)
• Solid understanding and experience with web (API) security
• Experience implementing caching on Rails APIs
• Experience working with WebSockets (we use Pusher, but that’s not a requirement)
• Strong interest in continued (personal and professional) development (learning new technologies and programming languages)
• Good communication skills (English) and willingness to improve. We value quality over quantity
• Comfortable working in a remote distributed environment with a high degree of personal autonomy and responsibility

Bonus points

• Front-end development knowledge and experience (JavaScript, CSS, HTML, Angular)
• Familiarity with Google Cloud services
• Experience with using Docker
• Experience with using and deploying to Kubernetes
• Experience with data analysis (SQL, BigQuery, Looker)
• WordPress experience is a plus (since that's the ecosystem we operate within as a business)

Location

Remote, in Europe, with at least a 6-hour overlap with GMT+1 to get a good overlap with the rest of the team. Codeable is fully distributed with ~15 full-time employees.

The Process

Please include your resume and salary expectations, and let us know why you’re the one for us and why we’re the one for you in the cover letter/message you send. 

The application period ends at the end of March 2025. We’ll then review the applications received and contact you the following week if we want to move forward with you. The process will include regular interviews with various team members and practical tests. 

We’re looking for someone who can start soon after the interviews are done. Around April or May 2025.

**About Pulse

We’re on a mission to break the health data oligarchy by empowering humanity to take control of their health data. Pulse turns vitals into value by aggregating health data and allowing users to share it with third parties in return for rewards. We’re building a DePin network powered by our native wearable device The Pulse One.

Our team is venture-backed by leading investors such as Collab+Currency, Lemniscap, Delphi Ventures, and Lattice Fund.

Check out our mission at Pulse Website and follow us on Twitter.

**About the Role

We’re looking for a Backend Developer to take ownership of the foundational systems powering The Pulse Hub, Pulse Mobile App, and real-time data integrations with our Pulse One wearable. This role is crucial in ensuring seamless, real-time data flows from hardware devices to users’ devices and the Pulse database while maintaining high scalability and security.

In addition, you’ll design and maintain our data lake to centralize data from multiple sources, including Shopify, analytics platforms, and real-time health metrics, enabling actionable insights and supporting our data-driven decision-making processes.

This is a unique opportunity to build infrastructure that underpins an entire ecosystem, making a tangible impact on how users take control of their health data. Our tech stack: Node/Typescript/PostgreSQL

**What You’ll Do

As a Backend Developer at Pulse, you will:

• Take the lead in architecting, building and scaling the Pulse Hub web portal and mobile app, ensuring seamless functionality for tracking health metrics, rewards, and user engagement.
• Build robust systems to process, store, and analyze high-volume health and fitness data, ensuring data integrity and low latency.
• Build and maintain a centralized data lake to aggregate and unify data from multiple sources, including user actions via Mixpanel, Shopify, Google Analytics, and Stripe, enabling cross-functional insights.
• Collaborate with the mobile and frontend teams to provide seamless user experiences powered by your APIs.
• Write clean, maintainable code and implement rigorous testing to deliver a robust, scalable platform.
• You’ll have the autonomy to select your own tools and libraries helping build the foundations of our data infrastructure.

**What We’re Looking For

• 5+ years of backend development experience, including building real-time, scalable systems for consumer applications.
• Deep understanding of real-time data processing, streaming, and synchronization between devices and cloud databases.
• Proven ability to write scalable, maintainable, and well-documented code.
• Knowledge of Bluetooth data protocols, IoT integrations, or similar device data pipelines is highly desirable.
• Proactive problem-solving and the ability to thrive in a fast-paced startup environment.
• A passion for health, fitness, or wellness technologies is a plus.

**What We Offer

• Generous salary and a competitive equity package—be part of our journey and share in our success.
• Flexible, fully remote work environment, allowing you to work from anywhere.
• An opportunity to make a meaningful impact at an early-stage company poised to transform health tech.
• A culture that values creativity, ownership, and continuous learning.

**Why Join Pulse?

🚀 Work with a high-energy team shaping the future of wearable tech

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