Tether is looking to hire a Senior QA Engineer to join their team. This is a full-time position that can be done remotely anywhere in the United Kingdom.

Teleport is hiring a remote Senior Fullstack Engineer - Policy. This is a full-time position that can be done remotely anywhere in the United States, Canada, Australia, England, Ireland or Poland.

Teleport - The open infrastructure access platform.

We are seeking an AI Prompt Engineer to play a pivotal role in shaping how AI interacts with users within our ecosystem. Your primary responsibility will be to design, refine, and optimize prompts that enhance the performance, accuracy, and contextual understanding of AI models aligned with our product vision.

In this role, you will work closely with our product and tech teams to understand user needs and develop custom-tailored prompts that drive engaging, insightful, and high-quality AI interactions. Your expertise will be essential in advancing our AI-powered NFT ecosystem, ensuring that our platform delivers dynamic, intelligent, and value-driven AI-generated experiences.

If you’re passionate about pushing the boundaries of Web3 and AI, we’d love to hear from you!

About Tiny SPL

Tiny SPL is a cutting-edge protocol designed to address Solana’s unique rent challenges through state compression, making the blockchain more affordable, inclusive, and efficient. Our innovative zkNFT standard drastically reduces data storage costs while enabling proof of ownership without incurring rent fees, which earned us first place at the ZK Compression sidetrack at the Solana Radar Hackathon and the support of top Solana thought leaders.

We also launched Tiny AI, an AI-powered no-code launchpad that turns ideas into fully fledged AI NFT ecosystems utilising our zkNFT standard. We are integrating AI into NFTs, creating non-fungible assets with agentic capabilities to build ecosystems that can interact, adapt, and evolve.

More about us.

Key Responsibilities

• Work collaboratively with our product development team to understand user needs and build context around AI language models
• Integrate prompts into our application, ensuring that they are cohesive with our product vision and design language
• Design, test, refine high-quality custom prompts to improve the user experience and increase engagement
• Test and debug prompts to ensure they are functioning correctly and conduct A/B testing on different prompt variations to improve accuracy and reduce hallucinations
• Continuously optimize and improve the prompts based on user feedback and usage data
• Research LLM jailbreaks, adversarial attacks, and prompt security to prevent manipulation in AI models for Web3
• Stay up-to-date with the latest developments in web3 and AI to inform prompt development and implementation e.g. ensuring AI agent chatbots are aligned with the latest developments

Key Qualifications

• Experience crafting and optimizing prompts for LLMs in production use cases.
• Strong understanding of AI models and prompt engineering techniques
• Ability to analyze AI outputs, debug failures, and implement improvements iteratively
• Fluent in English with strong communication skills
• Organized, adaptable, and able to thrive in a collaborative team setting
• Self starter with strong problem-solving skills and attention to detail
• Ability to work remotely, with a flexible schedule accommodating global time zones
• Ability to navigate ambiguity, adapt to change quickly, and thrive in a fast-paced setting
• (Bonus) Familiarity with Web3 and blockchain and has experience with on-chain AI implementations

About pganalyze

At pganalyze, we’re redefining how developers optimize one of the world’s most popular databases, PostgreSQL. Our software gives companies like Atlassian, Robinhood, and Notion the tools to solve their most complex Postgres performance challenges, ensuring their mission-critical applications run smoothly at scale.

By joining us, you’ll tackle the complex technical and user experience problems at the heart of large Postgres deployments, collaborate with a passionate team and open source community, and, together, help shape the future of Postgres. Our product is heavy on automated analysis and custom visualizations, and we build advisors to make automatic recommendations, such as the best index to fix a slow query.

We are a fully remote company, with the core team based in the San Francisco Bay Area. Our company is independent, self-funded, and profitable, giving us complete control over our product roadmap and priorities. We emphasize autonomy and focus time by having few meetings per week.

We welcome people of different backgrounds, abilities, experiences and perspectives. Having a work environment that is erse, inclusive and focuses on learning from one another is central to how we operate. Working together is a form of community, and we care about the shared spaces being safe and supportive.

About the role

You will enjoy working at pganalyze if you care about solving customer’s problems end-to-end based on a comprehensive understanding of their infrastructure, and the role of the Postgres databases in it. You will work with Enterprise customers on integrating and adopting pganalyze to level up their organization’s observability practices, and train customers on pganalyze’s monitoring functionality, Advisors and Query Tuning.

Your core responsibility: To help onboard customers to the product by resolving issues they experience in their infrastructure (be it AWS, GCP, Azure or on-premise), commonly when deploying our pganalyze Enterprise Server product. Your work will also involve having an understanding of common reasons customers choose pganalyze, and having a good understanding of Postgres, being able to jump into the details to figure out how Postgres behaves in certain situations, to guide customers towards a comprehensive solution.

You will directly work with our VP of Sales, as well as our Founder & CEO on strategic deals, and develop the playbook for integrating pganalyze in complex customer environments. Our team is cross-functional, and our goal is to improve the pganalyze product where we can, to allow repeated delivery of a great customer experience.

Whilst this role is customer-centric, we anticipate travel to be minimal as most of our customer communications are online during US day time.

At pganalyze you will:

• Work on closing strategic Enterprise deals by quickly identifying integration issues and partnering with customers to resolve them
• Write automation code and scripts to help customers solve implementation problems
• Think creatively how to bridge the gap from product capabilities to a customer’s requirements
• Improve our integration with common deployment methods such as Kubernetes, for example by contributing to our Helm charts
• Work on better product documentation and enable customers to use pganalyze more effectively
• Participate in our support rotation, and help drive improvements to how we handle customer support (our support rotation is currently staffed by our engineering team)
• Help with new product development by gathering feedback in collaboration with our design lead (learn more about our design principles)
• Collaborate with other engineers on shipping new functionality end-to-end

Previously, you have:

• Worked professionally for 5 years as a solutions/sales engineer, or have at least 5 years of software engineering experience with an active interest to move into a customer-centric role
• Worked with cloud platforms such as AWS, GCP or Azure for at least 3 years
• Written code with Rust, Go or Ruby for at least 3 years
• Written code that fetches data and/or interacts with cloud provider APIs
• Worked closely with customers, and have strong technical communication skills
• Used Postgres for multiple projects, and are familiar with using “EXPLAIN” on a query
• Created indexes on a Postgres database based on a query being slow
• Structured your work and set your schedule to optimize for your own productivity

Optionally, you also have:

• Presented complex technical topics to an external audience
• Worked in environments where Kubernetes is the deployment method of choice
• Used APM and tracing tools to understand slow requests end-to-end
• Written your own Postgres extensions or contributed to the Postgres project
• Developed technical demos end-to-end, from the concept to the implementation
• Hosted webinars on complex technical products

Salary and compensation

Benefits

💰 401(k)

🌎 Distributed team

🤓 Vision insurance

🦷 Dental insurance

🚑 Medical insurance

🏖 Unlimited vacation

💰 401k matching

🏬 Coworking budget

🖥 Home office budget

💰 Equity compensation

JOB DESCRIPTION

Seed Oil Scout is seeking a talented and motivated Full-Stack software engineer to join our innovative team. This role is perfect for a new graduate or senior in college looking to gain hands-on experience in a fast-paced, AI-driven startup environment.

Join us in our mission to revolutionize the way people think about dining and health!

Applications can be submitted at the bottom of this page.

KEY RESPONSIBILITIES

What You’ll Do

Reporting to our Founder, you’ll be responsible for the following:

Backend Development & Integration:

• Work on API integrations with Node.js to power features such as payments (Stripe), user analytics (Amplitude), and subscription management (RevenueCat).
• Create and maintain scalable and maintainable backend services that enhance app performance and reliability.
• Build robust data pipelines to streamline the collection and analysis of user and app performance data.

Analytics & Performance:

• Collaborate with the product and data teams to ensure effective implementation of analytics platforms.
• Troubleshoot, debug, and optimize the application for maximum speed and scalability.

Mobile Development:

• Develop and maintain high-quality Flutter code for iOS and Android applications.

KEY COMPETENCIES

What You Need

• 2+ years of experience in Flutter app development.
• Strong experience with Node.js, API integrations, and server-side development.
• Familiarity with data analytics platforms like Amplitude, RevenueCat, or similar.
• Experience with cloud services (e.g., Firebase, Google Cloud Platform).
• Knowledge of SaaS platforms like Stripe and subscription management tools.
• Natural and deep understanding of US popular culture across the decades and today, as incredible marketing is at the core of SOS.
• Solid understanding of SQL and data management practices.
• Excellent problem-solving skills and a strong sense of ownership in delivering great user experiences.

Technologies We Use

• Flutter for cross-platform mobile development
• Node.js for API and backend services
• Stripe for payment processing
• Amplitude and RevenueCat for data analytics and subscription management
• Firebase for backend infrastructure
• SQL for database management

Why Join Us?

The Company:

Seed Oil Scout is a top-50 iOS app in Food & Dining globally dedicated to bringing transparency to restaurant sourcing and ingredients.

With over 1M downloads last year and over 475K instagram followers including mega-celebrities like Joe Rogan, the world is watching as Seed Oil Scout changes American dining for the better.

We've done high profile announcements for Sweetgreen, released a hit country single and enjoy harassing restaurants like Carbone, check that out here.

If you strongly dislike seed oils and becoming one of the first employees at the hottest company in dining tech excites you, come help us change the world.

Salary and compensation

Benefits

🤓 Vision insurance

🦷 Dental insurance

🚑 Medical insurance

🏖 Paid time off

📚 Learning budget

💪 Free gym membership

🚫 No politics at work

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

Astronomer - Modern data orchestration.

About Us

Ideal Protein is a leading provider of scientifically validated weight loss and wellness solutions, dedicated to empowering iniduals to achieve and maintain their health goals. Our commitment to innovation, excellence, and customer success has made us a trusted partner in the health and wellness industry.

About the Role

We are looking for an experienced full-stack Javascript/Typescript developer to join our team. If you’re excited about having a meaningful impact on a small but growing development team, and value the freedom to tackle problems in creative ways, this role could be a great fit.

Our stack includes Angular on the frontend and TypeScript on the backend, with some legacy services in JavaScript that we are actively migrating.

What We’re Working On

We have two main areas of focus:

1. Product Enhancements

   We’re creating new ways to support modern weight loss by enhancing the customer experience and equipping clinics with better tools to grow their business.

2. Platform Modernization

   Over the past decade, the development world has evolved with tools that enhance both the developer and user experience. We’re investing in updating our platform to adopt modern tools and best practices, enabling us to build and improve features faster. This is an exciting area where you can make an outsized impact.

What You’ll Do

• Balance shipping new features with investing time in platform improvements.
• Apply modern product development practices and modern JavaScript knowledge, including experience with modern frameworks, to drive impactful solutions.
• Build new features with hands-on coding while collaborating closely with the team.
• Lead technical projects by designing elegant, maintainable solutions that align with product and business goals.

Preferred Experience

• Strong experience in product engineering principles and product team collaboration. You measure success by solving customer problems, not just by the code you write.
• Expertise in applying domain-driven design principles to system architecture. Experience with modern Node.js frameworks (e.g., Nest, Redwood) is a plus.
• Familiarity with complex refactoring projects or migrations is a strong advantage.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🏖 Paid time off

⬜️ No whiteboard interview

👀 No monitoring system

🚫 No politics at work

About us

Ambush is an AI company developing AI research & products that accelerate onchain adoption. We’re building Web3’s first autonomous AI agents to simplify wealth creation & onchain safety.

We’re a lean & hyper performance-oriented team; we are competitive, we like moving fast, and we run head-first towards seemingly impossible ideas. Our entire team is crypto-native & we have a shared North Star of solving web3’s hardest challenges.

Our team is led by one of crypto’s prominent anons, Psycho.

About the role:

We’re hiring a Solana-focused backend engineer with proven experience building performant backends & infra for high-growth Solana products.

As our lead backend engineer, you will work directly alongside the CTO to help ensure that our infrastructure & backend is being built to support demanding requirements for performance, security, and scalability.

Because we are an AI company building onchain products, the ideal candidate has a strong general interest in DeFi, and uses LLMs such as GPT, Cursor, Co-pilot, or similar in their daily engineering work flow.

Requirements:

• 4+ years of backend development experience, with strong expertise in Rust and/or Golang.
• 2+ years of hands-on experience with Solana-based projects, including working with RPC nodes, Solana programs, and SDKs.
• Proficiency in designing and implementing scalable backend systems using microservices architectures and event-driven systems.
• Solid understanding of PostgreSQL and familiarity with NoSQL databases.
• Experience deploying and managing systems in AWS or other cloud environments, with knowledge of infrastructure as code (Terraform).
• Familiarity with Docker and containerization technologies.

Responsibilities:

• Design, build, and maintain backend services that integrate seamlessly with the Solana blockchain, including RPC interactions, program deployment, and on-chain data management.
• Develop and document high-quality APIs for internal teams and external partners.
• Optimize system performance and scalability for Solana-integrated applications.
• Collaborate with the team to design and implement innovative blockchain-enabled features.
• Stay informed about advancements in the Solana ecosystem and contribute to strategic product development decisions.
• Manage infrastructure deployments and production systems in cloud environments.

Not required, but a strong bonus:

• Prior commercial experience as a smart contract dev or security auditor
• Strong Python skills

Why join Ambush?

• Industry leading pay: strong base salary + uncapped profit share + equity
• Lean & high-impact team; we hate bureaucracy & will not grow past ~10 people
• One of the fastest growing AI companies in crypto
• Proven leadership team with several acquisitions under their belt

Internal full-time hires only, no contractors or agencies

1Password is hiring a remote Staff Developer, Rails. This is a full-time position that can be done remotely anywhere in Canada or the United States.

1Password - The world's most-loved password manager.

Solana Foundation is looking to hire a Developer Advocate - Education to join their team. This is a full-time position that can be done remotely anywhere in the United States.

"

About Us

The Role

What You’ll Do

* Develop & Maintain: Build, enhance, and maintain web applications using the Django framework, ensuring clean, efficient, and scalable code.

What We’re Looking For

* Strong experience with Django and a passion for writing clean, modular, and efficient Python code.

Join us to build a product that not only transforms how AI voice agents are tested but also sets the standard for reliability in an increasingly competitive market. If you're ready to push the boundaries of technology and make a tangible impact, we’d love to hear from you.

",

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

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

NearForm is hiring a remote Senior Developer. This is a contract position that can be done remotely anywhere in Poland.

NearForm - Open enterprise software for rapid digital innovation.

Splice is hiring a remote Director, Engineering. This is a full-time position that can be done remotely anywhere in the United States.

Splice - Building a creative ecosystem for music producers.

Join our dynamic team as we push the boundaries of technology in the vintage clothing marketplace. Established by top tier consultants and private equity professionals, our ambitious startup is set to reach significant capitalization by 2026. We are crafting an AI-driven marketplace that leverages an exclusive sourcing model to tap into a growing market niche. We seek a temporary Full Stack Developer skilled in AI voice and image processing technologies to revolutionize how we connect with our inventory sources and customers.

Responsibilities:

• Develop a voice bot integrated with external databases that enhances sourcing capabilities and seamlessly incorporates conversation outputs.
• Integrate AI-driven tools for creating and processing high-quality images tailored for an e-commerce platform.
• Implement and optimize e-commerce functionalities to support a cutting-edge shopping experience.
• Collaborate with the team to align technical solutions with strategic business goals.
• Pioneer innovative AI solutions that can transform marketplace interactions across various communication channels, including landline phones, text messages, and emails.

Requirements:

• Demonstrated proficiency in AI coding and automation processes, with a strong portfolio of relevant commercial use cases.
• Proven experience with AI applications in e-commerce, particularly in voice bot generation and AI-enhanced image processing.
• Expertise in the latest GenAI tools for voice and chatbots, with a deep understanding of their advantages and limitations.
• Ability to work independently and adapt to the fast-paced nature of a startup.
• Excellent communication skills and a proactive approach to problem-solving.
• This position is open to international candidates outside of the US.

Salary and compensation

Benefits

📆 4 day workweek

👀 No monitoring system

🚫 No politics at work

Reddit is hiring a remote Staff Backend Engineer, Media Foundations. 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 Internet of Things Technical Lead with experience leading projects and collaborating closely with product owners.

In this role, you’ll be joining our team as a senior developer eager to find cost-effective, high-quality, pragmatic solutions to our clients' complex problems. You might identify as a Technical Lead, a Technical Architect, or a Technical Program Manager, and — as you might expect with “technical” in the title — you would be the person on the project team most responsible for delivering the most appropriate and cost-effective technical solution for the client’s needs.

Responsibilities will include:

• Crafting technical architecture plans through interfacing with clients to understand product requirements
• Planning development work with your team through scoping and estimation
• Developing and optimizing technical solutions while keeping in mind performance, scalability, maintainability, and cost-effectiveness
• Participating in code reviews, providing constructive feedback to teammates and ensuring adherence to best practices
• Contributing to project success by keeping a close eye on team velocity, project scope, budget, and timeline
• Negotiating with clients to align project scope with budget and timeline, if needed

The person we’re looking for is happy, relaxed and easy to get along with. They’re flexible on anything except conceits that will lower their usually outstanding work quality. They work “smart”, by carefully managing their workflow and staggering features that have dependencies intelligently — they prefer deep work but are OK coming up to the surface now and then for top level / strategic conversations.

We believe people with backgrounds or interests in design, art, music, food or fashion tend to have a well rounded sense of design & quality — so a variety of hobbies or side projects is a big nice to have!

Salary and compensation

"

Gander is building the next generation of AI technology for the aviation industry (usegander.com), starting in business and general aviation. Our products help aviation operators coordinate maintenance, fleet availability, airport operations, and crew scheduling. We are looking for rockstar interns (2-3) to join us for an immediate start (End of Feb ‘25) and continue on through the summer or convert to a full-time role upon graduation.

Interns at Gander will get to be at the bleeding edge of applying the latest AI technologies to the aviation industry (desktop agents, multi-model LLMs, and more) and get the opportunity to work hands on with aircraft operators. The team is small & based in NYC, however we are planning on several in-person sprints at customer sites and/or locations around the country to bring team members including interns not based in NYC together.

Job Responsibilities:

* Create Great Software: Take product requirements and turn them into beautiful, reliable, and high quality software and multiply your impact with code gen tools

Key Requirements

* Evidence of End-End Product Ownership: Experience building highly technical and/or well-designed personal projects

",

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.

What we offer:

• The rate depends on your seniority level, skills and experience. We’ve already paid out over $11M to our engineers.
• No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
• We’ll manually find the best project for you according to your skills and preferences.
• Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
• We respect your seniority so you can expect no micromanagement or screen trackers.
• Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
• We will support you from the time you submit the application throughout all cooperation stages.
• Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
• Through our community, we will connect you with the best developers from more than 50 countries.

Requirements:

• 4+ years of software development experience.
• 3+ years of commercial experience with React.js.
• 3+ years of commercial experience with Python.
• Hands-on experience with Next.js, PostgreSQL, Node.js would be a plus.
• 3+ years of experience with AWS and TypeScript is a must.
• Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
• Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
• Strong self-organizational skills — ability to work full-time remotely with no supervision.
• Reliability — we want to trust you and expect that you won’t let us and the client down.
• Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.

Sounds good for you? Apply now and join the Lemon.io community!

Not your tech stack?

We have different projects for Senior Developers, so if you have 4+ years of commercial experience in software development and you are fluent with AI Engineering, DevOps, we would be happy to communicate and provide you with a project that matches your experience. Just apply, and we will share more details with you.

If your experience matches our requirements, be ready for the next steps:

• VideoAsk — watch a short video about our startup, up to 10 minutes
• Complete your profile on our website
• 30-minute screening call
• Technical interview
• Feedback
• Magic Box (we are looking for the best project for you).

P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, the U.S. ., Canada, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), and the the UK. However, we have some exceptions.

At the moment, we don’t have a legal basis to accept applicants from the following countries:

• European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.
• Latin America: Cuba and Nicaragua
• Most Asian countries and Africa.

We expand and shorten the list of exemptions regularly.

We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.

Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.

About us

Seats.io is a team of 6 people building best-in-class reserved seating for online ticketing. We grew from a hobby project into a healthy B2B scaleup with 600+ customers across the globe. Every month, over 5M seats are booked through our interactive floor plans.

We like:

✅ Solving hard problems and having a laugh

What you’ll be doing

Same as the rest of the team: building a kick-ass product. You’ll champion your own features and help others with theirs.

From day one, and in no particular order, you will:

👉 talk to users to understand their needs

If you love crafting intuitive, high-performance interfaces for complex tools, you'll feel right at home.

What we look for

• A senior front-end developer (at least 5+ years of experience)
• Strong experience with graphics programming (canvas, svg, webgl, etc)
• A critical thinker - especially about your own work
• Fluent in both English and code
• An eye for detial, because pixels matter

Location

This is a remote position, but being in Europe - for time zone alignment - is highly preferred.

Compensation

We look for quality, and compensate accordingly.

Salary and compensation

Nansen is looking to hire a Staff Security Engineer to join their team. This is a full-time position that can be done remotely anywhere in Europe.

Biconomy empowers Web3 developers to build seamless, user-friendly dApps that work effortlessly across multiple blockchains. Our battle-tested modular account and execution stack eliminates traditional UX friction points, helping projects accelerate user adoption while reducing development costs. By processing over 50 million transactions across the 300+ dApps we’ve served, we’re powering the future of onchain economies.

The Role: Innovating at the Intersection of AI and DeFi

We are assembling a world-class team to redefine on-chain analytics using AI Agents & Machine Learning. As a DevOps Engineer, you will build and optimize the AI & ML infrastructure, enabling real-time wallet activity analysis, ML-driven tagging, and PnL insights at scale. You’ll work with Kafka, Snowflake, AWS S3, and high-speed data pipelines to process over 10-15 billion rows of historical data and real-time streaming events, ensuring a scalable, secure, and efficient AI ecosystem.

This is a high-impact role at the core of our AI-driven crypto intelligence platform.

What Will You Be Doing?

Scalable AI & ML Infrastructure

• Design & optimize cloud-native architectures for AI & ML-driven analytics on DeFi transactions.
• Develop and maintain high-performance, distributed computing environments that process billions of on-chain and off-chain events.
• Deploy and manage ML models & AI agents efficiently in Kubernetes (K8s) and other containerized environments.

High-Speed Data Engineering

• Design real-time streaming pipelines using Kafka for high-frequency on-chain transaction ingestion.
• Optimize Snowflake queries & storage solutions to handle large-scale blockchain datasets efficiently.
• Implement ETL/ELT pipelines for structured & unstructured blockchain data aggregation.

Infrastructure Automation & Reliability

• Automate cloud infrastructure using Terraform, Pulumi, or CloudFormation for seamless scaling.
• Enhance security & performance with CI/CD best practices for AI model deployment.
• Implement observability, logging & monitoring with tools like Prometheus, Grafana, and Datadog.

ML & AI Model Deployment

• Streamline model deployment for AI agents that analyze blockchain wallet behavior.
• Build infrastructure to support model training, inference, and real-time decision-making.
• Optimize GPU workloads for AI-driven pattern recognition & risk analysis.

Collaboration Across Teams

• Work alongside AI engineers, blockchain developers, and data scientists to integrate AI-driven insights into DeFi tools.
• Optimize node infrastructure & RPC services for multi-chain DeFi interactions.
• Research and implement best practices in Web3 DevOps, cloud automation, and ML infrastructure.

Requirements:

Core Experience

• 5+ years of DevOps experience, specializing in AI/ML infrastructure & high-scale data pipelines.
• Expertise in AWS, GCP, or Azure, focusing on scalable, event-driven architectures.
• Experience handling Kafka queues, Snowflake databases, and massive-scale data processing.

DevOps & Infrastructure Skills

• CI/CD Automation using GitHub Actions, CircleCI, Jenkins, or ArgoCD.
• Kubernetes & Docker for managing AI workloads and high-performance model inference.
• Infrastructure-as-Code (IaC): Terraform, Pulumi, or CloudFormation.

Data Engineering & AI Model Ops

• Experience with Kafka, Snowflake, and S3 for real-time & historical data processing.
• ML Model Deployment: Knowledge of TensorFlow, PyTorch, or ONNX for AI-based wallet analytics.
• Strong Python & Bash scripting for automation and orchestration.

Security & Reliability

• Security-first mindset: Experience with IAM, firewall management, and Web3 security best practices.
• Observability & Monitoring using Prometheus, Grafana, Datadog, or OpenTelemetry.

Bonus Skills

• Experience with multi-chain blockchain infrastructure (Ethereum, Solana, L2s).
• Knowledge of DeFi protocols, smart contracts, and risk analytics.
• Experience with AI inference at scale (Ray, Triton, Hugging Face Transformers, etc.)

What We Offer:

• Flexible Working Hours: Enjoy autonomy over your schedule.
• Generous Vacation Policy: 25 days vacation per year plus public holidays
• Competitive Salary: With regular performance reviews.
• Token Allocation: Be rewarded with tokens as part of our compensation package.
• Growth Opportunities: Be part of an exciting new project with significant career growth potential.
• Innovative Work Culture: Join a team that’s at the cutting edge of Web3, AI, and DeFi, and help shape the future of the digital economy.
• Fun and Engaging Team Activities: Game nights, virtual celebrations, and work retreats to keep things exciting.

At Biconomy, we believe in creating a erse and inclusive workplace. We are committed to being an equal-opportunity employer, and we do not discriminate based on race, national origin, gender, gender identity, sexual orientation, disability, veteran status, age, or any other legally protected status.

Biconomy empowers Web3 developers to build seamless, user-friendly dApps that work effortlessly across multiple blockchains. Our battle-tested modular account and execution stack eliminates traditional UX friction points, helping projects accelerate user adoption while reducing development costs. By processing over 50 million transactions across the 300+ dApps we’ve served, we’re powering the future of onchain economies.

The Role: Innovating at the Intersection of AI and DeFi

We’re assembling a new team to build an innovative AI-powered product aimed at transforming how users do on-chain transactions. This is a greenfield project in its early development, offering a unique opportunity to tackle complex challenges and push the boundaries of AI in Web3. We can share more details about the project throughout the interview process.

What Will You Be Doing?

• Develop next-generation AI for Crypto Transactions: Design and implement AI-driven solutions that enhance multi-chain interactions, focusing on scalability, security, and usability.
• Optimize AI & Multi-Agent System Performance: Work on improving system efficiency when interacting with AI models, mitigating hallucinations, and enhancing the performance of multi-agent systems for latency and accuracy.
• Build AI-powered automation systems: Develop and deploy LLM-based AI agents capable of interpreting and executing user intents, providing automated execution strategies for on-chain transactions.
• Deploy and fine-tune local AI models: Ensure high efficiency, accuracy, and security in real-world DeFi applications by fine-tuning LLMs and local machine learning models.
• Work with advanced blockchain infrastructure: Implement solutions that understand and process on-chain DEX transactions, bridge transactions across EVM and non-EVM chains, and optimize execution paths.
• Collaborate cross-functionally: Work closely with blockchain engineers, product teams, and UX/UI designers to integrate AI seamlessly into the Biconomy ecosystem.
• Stay on the cutting edge: Research and experiment with the latest advancements in AI, machine learning, and blockchain to keep our product innovative and competitive.

Requirements:

• 5+ Years of Software Development: Including at least 2 years in blockchain development, with proven experience leading technical teams and projects.
• Strong AI & ML Expertise: Hands-on experience deploying and fine-tuning LLM models and developing local AI models for optimized inference.
• Deep blockchain knowledge: Understanding of on-chain DEX transactions, bridge transactions across EVM and non-EVM chains, and the infrastructure behind them.
• DeFi Enthusiast: 2+ years of experience interacting with DeFi protocols and multi-chain ecosystems.
• Proficient in Python, TypeScript, and React, with a focus on clean, scalable, and maintainable code. Knowledge of Solidity or Rust is a plus.

What We Offer:

• Flexible Working Hours: Enjoy autonomy over your schedule.
• Generous Vacation Policy: 25 days vacation per year plus public holidays
• Competitive Salary: With regular performance reviews.
• Token Allocation: Be rewarded with tokens as part of our compensation package.
• Growth Opportunities: Be part of an exciting new project with significant career growth potential.
• Innovative Work Culture: Join a team that’s at the cutting edge of Web3, AI, and DeFi, and help shape the future of the digital economy.
• Fun and Engaging Team Activities: Game nights, virtual celebrations, and work retreats to keep things exciting.

At Biconomy, we believe in creating a erse and inclusive workplace. We are committed to being an equal-opportunity employer, and we do not discriminate based on race, national origin, gender, gender identity, sexual orientation, disability, veteran status, age, or any other legally protected status.

We’re looking for a senior generalist software engineer with expertise in backend and/or native app development, and interest in systems architecture and IoT.

In this role, you’ll work on a variety of client projects to find cost-effective, high-quality, pragmatic solutions to complex problems. Responsibilities will include:

• Crafting technical architecture plans through interfacing with clients to understand product requirements
• Developing and optimizing technical solutions while keeping in mind performance, scalability, maintainability, and cost-effectiveness
• Participating in code reviews, providing constructive feedback to teammates and ensuring adherence to best practices
• Contributing to project success by keeping a close eye on team velocity, project scope, budget, and timeline
• Negotiating with clients to align project scope with budget and timeline, if needed

The person we’re looking for is happy, relaxed and easy to get along with. They’re flexible on anything except conceits that will lower their usually outstanding work quality. They work “smart”, by carefully managing their workflow and staggering features that have dependencies intelligently — they prefer deep work but are OK coming up to the surface now and then for top level / strategic conversations.

We believe people with backgrounds or interests in design, art, music, food or fashion tend to have a well rounded sense of design & quality — so a variety of hobbies or side projects is a big nice to have!

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🤓 Vision insurance

🦷 Dental insurance

🚑 Medical insurance

🏖 Paid time off

📆 4 day workweek

🏔 Company retreats

🏬 Coworking budget

📚 Learning budget

🖥 Home office budget

💰 Profit sharing

⬜️ No whiteboard interview

👀 No monitoring system

Semaphore is a leader in hosted continuous integration and deployment, with over 50,000 developers relying on Semaphore to test and deploy their code. Our mission is to help teams ship their software faster and with more confidence by providing a robust and scalable platform for software delivery.

Our platform provides continuous delivery services for all mainstream programming languages as well as native support for building and shipping Docker containers. We aim to deliver the easiest to use and fastest CI/CD service. We work in small highly effective teams, so every team member is vital to the success of the company.

We’re looking for collaborative, detail-oriented people who are ready for a challenge. In this role, you’ll have the opportunity to take significant ownership of technical projects that will drive the success of the overall business. A strong candidate will bring solid product and technical acumen, combined with the ability to move fast (and fix things).

We are passionate about providing a remote, flexible and supportive work culture. Collaboration is in our DNA.

P.S. We are soon going to open-source, and are super excited about that! We hope you will be also. Be sure to check out https://semaphoreci.com/summit.

Examples of problems you’ll be solving

• Implementing new Semaphore features
• Improving the internal and external APIs of Semaphore
• Automating the release process, monitoring, and solving scalability issues
• Contributing to and collaborating on Open Source software
• Optimizing performance and scalability of Semaphore

Qualifications

• You have 5+ years of professional experience.
• You have experience with shipping services into production, and maintaining their quality.
• You have experience with developing database-backed web applications.
• You are proficient in one or more high-level languages.
• You are self-managed and capable of making effective decisions.
• You care about building maintainable, efficient, clean code.
• You speak and write well. We’re a distributed team so we’re extra mindful about communication.
• You are willing to master Golang and/or Elixir, our primary languages for writing Semaphore.
• You are proficient with following TDD/BDD practices for implementing new features.
• You have experience with taking responsibility for projects end-to-end from idea to completion.
• You have experience with Linux and the command line.

Benefits

• The impact of working on a product that’s competing on a global market.
• Join a small team of around 30 full-time people who love what they do.
• A healthy 40-hour work week, friendly and supportive work environment.
• Competitive salary.
• Company retreats.
• Space to learn continuously and choose the tools and equipment for your job
• Paid trips to conferences and books of your choice.
• Interact with developers that use Semaphore and talk about the latest and greatest way to develop and ship software.
• Paid membership at a fitness club of your choice

Semaphore is an equal-opportunity employer. Consistent with our mission of serving a erse and global audience, we value a erse workforce and inclusive culture which reflects that. We encourage applications from all qualified iniduals without regard to race, color, religion, gender, sexual orientation, gender identity or expression, age, national origin, marital status, disability, and veteran status.

WOO Network is looking to hire a Senior Technical Support Engineer to join their team. This is a full-time position that can be done remotely anywhere in APAC.

Job Description

We are looking for an experienced Smart Contract Auditor / On-Chain Engineer to join our fast-growing team. As a member of our team, you will be responsible for auditing and securing smart contracts, modeling edge cases and hack scenarios, as well as developing and maintaining on-chain infrastructure solutions. You will work closely with our blockchain developers and product teams to ensure the integrity and security of our smart contracts deployed across various decentralized platforms.

A key part of your role will be conducting in-depth research on emerging protocols and staying up to date with the latest trends, vulnerabilities, and innovations in the DeFi and blockchain space. This will help you ensure that our smart contracts are not only secure but also take full advantage of new, best-in-class protocol features.

Additionally, a solid understanding of on-chain execution, including optimizing transaction flows, is essential for this role. Experience with writing trading bots that interact with on-chain protocols or decentralized exchanges would also be highly beneficial.

If you are passionate about the intersection of blockchain technology, security, and innovative development, this role is for you.

Responsibilities:

• Research Emerging Protocols: Analyze new blockchain protocols, reviewing their documentation, audits, and smart contracts to identify risks and recommend improvements for integration.
• Code Review & Analysis: Review code for compliance with best practices, identifying potential security flaws, and ensuring that contracts function as intended.
• Smart Contract Auditing: Perform thorough security audits on smart contracts, identifying vulnerabilities, bugs, and optimization opportunities. Provide actionable recommendations to mitigate risks.
• Collaboration with Teams: Work closely with blockchain developers, product managers, and stakeholders to design and implement secure smart contract solutions.
• Troubleshooting and Technical Support: Provide support for ongoing issues or incidents related to smart contract vulnerabilities or failures.
• Documentation & Reporting: Maintain detailed reports and documentation on auditing processes, findings, and resolutions.

Requirements & Skills:

• 3+ years of experience in smart contract auditing and on-chain development.
• Strong proficiency in Solidity and in-depth understanding of Ethereum Virtual Machine (EVM) and gas optimization.
• Familiarity with decentralized finance (DeFi) protocols and platforms (e.g., Uniswap, Aave, Compound, Pendle).
• Deep knowledge of smart contract security best practices, including common vulnerabilities
• Knowledge of consensus mechanisms used in PoS systems (staking, restacking, slashing , etc …).
• Experience with on-chain execution, including transaction optimization, gas management, and effective interaction with DeFi protocols.
• Ability to provide clear technical documentation and communicate security findings to both technical and non-technical stakeholders.
• Fluent in English (wriYen and spoken), with the ability to communicate effectively in a distributed team.

Nice to Have:

• Experience with other blockchain platforms such as Solana, Cosmos, or
• Familiarity with formal verification techniques or static analysis tools for smart contract auditing.
• Experience writing and maintaining on-chain trading bots or algorithms that interact with decentralized exchanges or other on-chain assets.

We Offer:

• Competitive salary and performance-based bonuses.
• Remote-first environment with flexible working hours.
• A dynamic and fast-paced work environment where you can contribute directly to cutting-edge blockchain products.
• Opportunities for personal growth and skill development in the growing blockchain and DeFi space.
• A collaborative, innovative team of professionals passionate about blockchain, crypto, and DeFi.

Position: Full-time

Location: Flexible; availability during US trading hours is preferred.

About Edge Capital

Edge Capital is an innovative alternative hedge fund focused on digital assets, blockchain, and decentralized finance (DeFi) markets. We combine algo trading and macro strategies to identify untapped opportunities in these markets based on our multidisciplinary expertise in macro trading and analysis, portfolio, and risk management, combined with our extensive knowledge and experience in fintech, DeFi, and blockchain technologies.

What we’re looking for

StableUnitDAO is looking for a lead solidity architect for a complex DeFi protocol (not NFT)

Requirements

• DeFi solidity contracts deployed on mainnet in the last 12 months
• Knowledge of OZ libs and modern DeFi primitives
• You know system design of DeFi protocols, CDP, lending etc
• Experience with modern DeFi best practices

You must have prior experience with at least one of

• Projects with simultaneous multichain
• Projects with mission critical oracle
• Yield aggregators/optimizers
• CDP/Algo stablecoins
• Lending protocols

Detailed explanation of the protocol.

In this project you will work side by side with an architect who is ex 1inch, facebook, amazon, prizewinner of ethNY (award from Binance labs, Wyre, Matic), ethBoston (JPMorgan), ethDenver (MakerDao, Chainlink), ethLison (Gnosis), cs-national team, math degree, wrote multiple contracts with $1.1B in volume. The project itself is a winner of multe grants including Arbitrum security grant.

The protocol is 100% owned by a DAO, members of which are accomplished investors and DeFi builders, such as founders and early employees from 1inch, lobsterDAO, GearBox, PowerPool, Zerion, ZeroPool, STFX. Advisors and early investors of Binance, Matic, Bittensor, Trustwallet and others. We’re open for all formats of work, full/part-time, project-based or outstaff.

How to apply

Self-check: For some inexplicable reasons some folks lie about their experience, but is just a waste of our and your time. Be sure you know all main topics of “mastering ethereum”, read and actually understand solidity/opcode/evm specs, and can easily solve any task from https://ethernaut.openzeppelin.com.

If you are a good match:

1. Send us 2 addresses of mainnet smart-contacts you developed that you are most proud of.
2. We would schedule a single 30m tech interview.
3. After interview, we are immediately ready to sign the paid contract for the test period/project.

For any questions https://t.me/elpinguinofrio

Metabase is hiring a remote Open Source Community Advocate. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Metabase - The fastest, easiest way to share data and analytics inside your company.

Autonomys Network, in collaboration with the Subspace Foundation, is supporting an open research effort led by our Technical Co-Founder, on designing a permissionless unbounded sharding protocol. This role is for a Senior Cryptography Researcher with strong expertise in permissionless blockchain consensus protocols and distributed systems.

Research Objective: The goal is to design a permissionless sharding protocol that extends PoAS while maintaining its permissionless property with, ideally, shared security across unbounded number of shards. This work builds upon the Subspace v2 (Dilithium) consensus, which was developed over several years and launched as Autonomys Network. The work is open-ended but with clear milestones, focusing on extending our Proof-of-Archival-Storage (PoAS) consensus protocol.

Given this is an open research role, there is flexibility in how the work is structured. We would like to have someone that can commit to a full time contract, but we are open to part time commitments for the right person.

Materials (Research Context):

• High-level Subspace PoAS consensus overview
• Implementation specifications
• Research paper
• Preliminary design constraints

Research Scope:

• Propose an initial candidate design of a permissionless sharding protocol with PoAS within one month.
• Advance to a state in which implementation prototyping can begin within three months.
• Complete a formalized design with an initial security proof within one year.

Requirements:

• Strong expertise in permissionless consensus protocols (Proof-of-Work, Proof-of-Space) and large-scale distributed systems like public blockchains.
• Familiarity with current landscape of blockchain sharding designs and blockchain protocols at large.
• High agency: solving complex problems, proposing alternatives and novel solutions with minimal to no oversight.
• Strong communication skills: responsiveness in async communications, timely updates about progress and any roadblocks, and ability to explain complex topics in approachable way.
• Result-oriented, not process-oriented.
• Ability to formalize and evaluate properties of cryptographic protocols.
• Ability to author research articles and papers.

SideShift.ai, the direct to wallet crypto exchange, is hiring a Junior Backend Engineer.

Since launching in late 2018, SideShift.ai has been growing rapidly. With seven-figure daily volume and key industry partnerships, we have achieved a lot but there is still plenty more to do. To slot in with our stack we are looking for someone who has experience with TypeScript, PostgreSQL, Redis and GraphQL.

We are searching for a junior backend engineer who is hungry to scale up their skillset and learn on the job.

Role

• Design, build, and maintain SideShift.ai.
• Take ownership of certains aspects of the SideShift.ai backend.
• Ship. Your ideas will make it into live products in no time.

You

• Junior level experience working with tools such as TypeScript, PostgreSQL, Redis and GraphQL.
• Hungry to learn and comfortable taking initiative.
• Strong interest in working on a cryptocurrency product.
• Able to join team meetings in EU/Asia timezones (but we try to avoid meetings as much as possible).

Nice to have

• Experience with financial markets is a bonus but not necessary.
• EU/Asia timezone preferred.
• An appreciation for memes.

Perks

• Salary paid in a SideShift.ai crypto of your choice.
• Join a profitable company with traction (seven figure weekly volume) and key industry partnerships with the likes of Trezor, Blockstream, Edge Wallet and more.
• Ship from the start. Your ideas actually lead to product developments with us.
• Remote first - work wherever you feel most productive.
• Flexible vacation policy.

Please note: SideShift.ai will pay fair market rates based on your location and experience.

Pulumi is hiring a remote Cloud Support Engineer (Australia). This is a full-time position that can be done remotely anywhere in Australia.

Pulumi - Modern infrastructure as code.

HubSpot is hiring a remote Software Engineer Summer Internship (UK). This is an internship position that can be done remotely anywhere in the United Kingdom.

HubSpot - Inbound marketing, sales, and service software.

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

Medium - A place to read and write big ideas and important stories.

Onramp and Offramp are the bridge between the fiat and onchain economies. Coinbase Onramp is the easiest way to move money onchain, a key part of onboarding users into crypto and enabling our mission to create an open financial system for the world.You will be joining a startup team of talented engineers within Coinbase on a mission to build the best rails to move money onchain and offchain. Onramp enables billions of dollars a year to come onchain and you will play a critical role in expanding our product offering. Our customers are some of the most used applications in crypto including Coinbase Wallet, Metamask, Phantom,  Block (Bitkey), and Ledger. What we look for in you:* You have at least 5  years of experience in software engineering.* Scrappy self-starter mindset with willingness to push through action to improve customer UX* Solid understanding of distributed systems, microservices architecture, and event-driven architectures* Experience working full stack across Web, Mobile, and Backend* You write high quality, well tested code to meet the needs of your customers.* Excellent communication and collaboration skills, with the ability to work closely with designers and product managers* Passion for great developer tooling and opinions on what makes developer platforms excellent * Passion for Onchain/Web3 and understanding of blockchain technologies, particularly Ethereum and EVM-compatible chainsNice to haves:* You have gone through a rapid growth in your company (from startup to mid-size).* You have experience building on top of  Blockchain technology (such as Bitcoin, Ethereum etc..)* You have experience decomposing a large monolith into microservices.* You’ve built financial, high reliability or security systems.Job #: GDBE05USPay Transparency Notice:  Depending on your work location, the target annual salary for this position can range from $[Zone 3 Pay] to $[Zone 1 Pay] + target bonus + target equity + benefits (including medical, dental, vision and 401(k)).   #Salary and compensation

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

FullStory - Digital experience analytics, session replay, heatmaps.

Overview:

A client of Scalable Path is expanding its educational web application into the private sector, and it needs help improving the quality and performance of its existing application. This involves creating automated tests, implementing logging, and improving the dev team’s practices.

The client is a Canadian company that has an existing web application that helps young students learn French as a second language.

A core challenge they are facing is getting their Unity 3D WebGL application that runs well on desktop to work reliably on Android and iOS. Specific examples include stabilizing a 3rd party whiteboard feature that is not working properly and getting the application to run consistently in browsers on modern versions of the iPhone and iOS. The application uses Spring Boot on the back-end and React on the front-end. Additionally they are using OpenVidu and WebRTC.

If you have experience with the back-end technologies mentioned above, that would be nice, but their core need is a strong React developer who is experienced with state management and real-time applications.

They use Jira for project management.

Duties and responsibilities:

• Attend daily scrum
• Consult with management on operational requirements
• Build new features in the front-end and back-end
• Debug and fix issues with existing application
• Refactor, optimize and simplify code to performance and readability
• Break down systems into smaller, modular components to improve scalability and flexibility
• Write automated tests
• Implement bug and performance monitoring
• Mentor junior developers and perform code reviews
• Implement best practices with the dev team

Relationships - who you’ll be working with:

You’ll be working with the CTO, Engineering Manager, 2 Web Developers, 3 Unity3D Developers and a DevOps Engineer. There is an existing daily meeting at 9:00 am America/Toronto (-04:00) EDT.

• Start date: As soon as possible.
• Expected contract duration: 12+ months

Preferred regions:

• The client’s preference is for candidates to be located in Canada, Latin America, or the United States.

Required skills:

• English (Must have)
• Python (Must have)
• Machine Learning (Must have)
• TensorFlow (Strongly preferred)
• Vector Databases (Must have)
• Google Cloud (Nice to have)
• PyTorch (Strongly preferred)
• JAX (Strongly preferred)

About Codex

We’re a erse team of experienced researchers and engineers scattered around the world working at the intersection of P2P networks and bleeding-edge Zero Knowledge technology. We’re building the next generation storage engine that attempts to “untie the knot” of incentivized storage. Our goal is to deliver a more advanced decentralized storage protocol that pushes the state of the art of decentralized storage solutions forward.

We’re looking for an experienced P2P Networking Protocol Engineer with hands-on experience designing and implementing state of the art networking protocols and distributed systems.

https://codex.storage/

Key responsibilities

• Design, implement and maintain state of the art p2p protocols and decentralized storage solutions
• Coordinate with the ongoing testing efforts to identify and eliminate instabilities in the existing codebase and bring it to production levels quality
• Implement and design new features as part of roadmap milestones

You ideally will have

• Strong academic or engineering background (PhD-level or equivalent in industry); relevant research experience
• Experience with low level libp2p primitives
• Experience with low level/strongly typed languages (C/C++/Go/Rust or Java/C#)
• Experience with Open Source software
• Keen communicator, eager to share your work in a wide variety of contexts, like internal and public presentations, blog posts and academic papers
• Strong networking (P2P systems) background
• Good debugging skills
• Good at explaining a complicated issue at varying levels of complexity for others to understand
• A strong alignment to our principles

Bonus points if

• Familiarity with the Nim programming language
• Familiarity with zero-knowledge proofs and other ZK-technology
• Familiarity with advanced cryptographic hashing functions

[Don’t worry if you don’t meet all of these criteria, we’d still love to hear from you anyway if you think you’d be a great fit for this role. Just explain to us why in your cover letter]

Hiring Process

• Interview with People Ops team
• Interview with Codex team member
• Pair Programming Task
• Interview with Codex Program Lead

Compensation

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

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

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

Gelato is an all-in-one Ethereum Rollup as a Service Platform built without limits. Designed to be super-fast, incredibly secure, and infinitely scalable, Gelato rollups allow anyone to build and deploy their fully serviced Layer 2 chains on Arbitrum, Optimism, Polygon, Celestia and more at a pace natively integrated with Web3’s favorite tools and services like Etherscan, The Graph, Pyth, Layer Zero and many more launching a production-ready web3 development environment from the Genesis block.

What we offer:

• Join one of the most technically robust teams in the crypto space, operating in a fully remote environment with our headquarters located in the crypto hub of Zug, Switzerland.
• Play a pivotal role in shaping the future of blockchain, by contributing to the development of Gelato’s Rollup-As-A-Service Platform, already trusted by leading projects like Lisk and Astar Network.
• Dive deep into cutting-edge Web3 technologies with exposure to Gelato’s premier Middleware Services stack, including Gelato Web3 Functions and Gelato Relay, foundational to top-tier applications such as MakerDAO, Connext, Abracadabra, and Pancakeswap.
• Earn and have a say with the GEL Token package, granting you a stake in the network’s future and a voice in the strategic direction of the project.
• Be backed by the best, with support from world-class investors including Dragonfly, IOSG, Galaxy Digital, ParaFi, Gnosis, and renowned figures like Stani Kulechov among others, securing your position at the forefront of the Web3 revolution.

Responsibilities:

• Design and develop scalable Web3 backend APIs, enabling seamless interaction between backend and frontend applications and the blockchain, ensuring high availability and performance for millions of users worldwide.
• Develop and maintain backend services for smart contract interaction, ensuring seamless integration and communication between smart contracts and the application layer. Focus on creating robust APIs and middleware that facilitate secure and efficient interactions with the blockchain, handling tasks such as event listening, transaction processing, and on-chain data retrieval.
• Specialize in smart contract lifecycle management, from writing and deploying smart contracts to conducting automated testing and security audits. Ensure the reliability and security of smart contracts through rigorous validation processes, upgrades, and optimizations to support flawless execution on the blockchain.
• Optimize blockchain data processing, implementing efficient methods for ingesting, storing, and querying on-chain data to support real-time analytics and user-facing applications.
• Collaborate on cross-functional projects, working closely with front-end developers and product teams to integrate blockchain functionalities into user-centric applications, enhancing overall user experience.
• Implement best practices for blockchain security, staying ahead of the latest in smart contract vulnerabilities, and employing rigorous security measures and auditing processes to safeguard all deployed contracts and back-end systems.
• Advance our infrastructure-as-code approach, taking a hands-on role in the continuous integration and delivery pipelines, ensuring that all back-end services are scalable, reliable, and secure.
• Drive innovation in Web3 technologies, researching and integrating new blockchain protocols and tools to keep the platform at the cutting edge of decentralized applications.

Requirements

• You can work autonomously on research, spec, implementation, deployment, monitoring and patching your code
• You are comfortable with Software Engineering (and a little bit of DevOps)
• You’ve extensive experience in shipping production-grade code that handles thousands of user interactions/transactions
• 4 years experience with either Node.js/TypeScript
• 4 years experience with highly scalable Web API engineering
• Strong experience with high throughput Database systems
• Strong experience with maintaining scalable microservices systems
• Good experience with distributed systems and/or container orchestration
• Strong interest in Web3/crypto industry
• Experience using crypto applications (e.g. Uniswap, Aave, etc.)

Not essential, but big bonus points:

• Experience with Web3 libraries and backend development (e.g. ethers.js, viem)
• Experience in Solidity smart contract development
• Knowledge about the inner workings of the EVM
• Experience with P2P systems and libraries (e.g. libp2p)

Technologies we use and teach:

• Node.js/TypeScript
• Golang/Rust
• GETH and its various Rollup forks
• libp2p
• RabbitMQ
• Redis
• PostgreSQL / TimescaleDB
• GCP (less AWS)
• Ethers.js
• Subgraphs
• Solidity

Benefits

• Fully remote team, with team members in Zug, Paris, New York, London, Singapore, and many other cool places.
• Competitive package with a generous token package. Get a share of the network token and be able to participate in the Gelato DAO
• Chance to participate in shaping the future of web3 by working together with the biggest projects in this space that use Gelato such as Optimism, Polygon, Arbitrum, Celestia and Eigenlayer
• World-class Investors - We are backed by the community, including industry-leading experts such as Dragonfly, ParaFi, Nascent, IDEO, IOSG and Galaxy Digital

Outlier helps the world’s most innovative companies improve their AI models by providing human feedback. Are you an experienced software engineer who would like to lend your coding expertise to train AI models?

We partner with organizations to train AI large language models, helping cutting-edge generative AI models write better code. Projects typically include discrete, highly variable problems that involve engaging with these models as they learn to code. There is no requirement for previous AI experience.

About the opportunity:

• Outlier is looking for talented coders to help train generative artificial intelligence models
• This freelance opportunity is remote and hours are flexible, so you can work whenever is best for you

You may contribute your expertise by…

• Crafting and answering questions related to computer science in order to help train AI models
• Evaluating and ranking code generated by AI models

Examples of desirable expertise:

• Currently enrolled in or completed a bachelor's degree or higher in computer science at a selective institution
• Proficiency working with one or more of the the following languages: Java, Python, JavaScript / TypeScript, C++, Swift, and Verilog
• Ability to articulate complex concepts fluently in Norwegian 
• Excellent attention to detail, including grammar, punctuation, and style guidelines

Payment:

• Currently, pay rates for core project work by coding experts range from USD $25 to $50 per hour.
• Rates vary based on expertise, skills assessment, location, project need, and other factors. For example, higher rates may be offered to PhDs. For non-core work, such as during initial project onboarding or project overtime phases, lower rates may apply. Certain projects offer incentive payments. Please review the payment terms for each project.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🚫 No politics at work

🎅 We hire old (and young)

Outlier helps the world’s most innovative companies improve their AI models by providing human feedback. Are you an experienced software engineer who would like to lend your coding expertise to train AI models?

We partner with organizations to train AI large language models, helping cutting-edge generative AI models write better code. Projects typically include discrete, highly variable problems that involve engaging with these models as they learn to code. There is no requirement for previous AI experience.

About the opportunity:

• Outlier is looking for talented coders to help train generative artificial intelligence models
• This freelance opportunity is remote and hours are flexible, so you can work whenever is best for you

You may contribute your expertise by…

• Crafting and answering questions related to computer science in order to help train AI models
• Evaluating and ranking code generated by AI models

Examples of desirable expertise:

• Currently enrolled in or completed a bachelor's degree or higher in computer science at a selective institution
• Proficiency working with one or more of the the following languages: Java, Python, JavaScript / TypeScript, C++, Swift, and Verilog
• Ability to articulate complex concepts fluently in Danish 
• Excellent attention to detail, including grammar, punctuation, and style guidelines

Payment:

• Currently, pay rates for core project work by coding experts range from USD $25 to $50 per hour.
• Rates vary based on expertise, skills assessment, location, project need, and other factors. For example, higher rates may be offered to PhDs. For non-core work, such as during initial project onboarding or project overtime phases, lower rates may apply. Certain projects offer incentive payments. Please review the payment terms for each project.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

📆 4 day workweek

🎅 We hire old (and young)

"

* Sepal AI specializes in PhD-level experts for AI model development. We provide robust, frontier data through a comprehensive process in sourcing, vetting, matching, trials, and peer quality control. We are currently working with the world's leading foundational AI model companies across domains in advanced sciences, professional services, and safety & preparedness.

",

• Choose flexible scheduling options to accommodate your lifestyle
• Gain hands-on experience through practical projects.
• Build a robust portfolio that sets you apart in the job market
• Collaborate with peers to enhance your communication and teamwork skills.
• Benefit from personalized feedback and 1-on-1 mentorship
• Learn on a structured learning path
• Upskill and Land a Job in 4-Months
• 100% Money Back Guarantee

Salary and compensation

About us

At Pass App, we’re on a mission to ignite financial freedom and true ownership for people everywhere. Each member of our team takes ownership and contributes a unique piece to our journey into the exciting realm of web3. Together, we craft more than just meaningful products and services—we create a lasting tangible impact in the real world.

We want you to join our search for greatness at the edge of what is technologically possible. Are you tired of the ordinary? Crave a challenge that sparks passion and purpose? We’d love to have you apply!

Our Team Values

• We value iterative learning
• We value taking ownership and leading by example
• We value creating an environment where everyone can unleash their true potential

The role you’re applying for

We are cooking up several big new initiatives, one of which is Pass App, a suite of products that will completely revolutionize how people experience and engage with web3.

We’re on the lookout for a talented and motivated QA Engineer to join our dynamic team. The ideal candidate should possess extensive experience in quality assurance, specifically within the realm of native mobile applications, blockchain and decentralized applications. You will be instrumental in ensuring the reliability, security, and user-friendliness of our web3 mobile wallet. This role demands meticulous attention to detail, a thorough grasp of blockchain technology, and the ability to work effectively with our development and product teams.

Joining in the early stages, you’ll play an active role in ensuring the quality and reliability of a truly innovative product and bringing it to market. Collaboration is essential in this position, as a team we can build impactful products.

What you’ll be doing

• Design, develop, and implement test plans to ensure the reliability and performance of our web3 mobile wallet.
• Develop and maintain automated test scripts for mobile applications using React Native
• Create, manage, and optimize automated testing frameworks for seamless product updates.
• Conduct thorough testing across platforms to identify and resolve bottlenecks, errors, and vulnerabilities.
• Collaborate with developers and product teams to deliver high-quality products.
• Lead and participate in peer reviews of test plans and code to maintain QA standards.
• Implement manual and automated test frameworks.
• Conduct performance and load testing to ensure the wallet can handle high activity levels.
• Provide detailed, actionable bug reports and work with developers for clarification and timely resolution
• Evaluate the app interface and user experience for intuitiveness and ease of use.

What we’re looking for

• QA Engineer with 4+ years of professional hands-on experience
• Strong communication and collaboration skills, especially written
• Experience with agile development methodologies
• Extensive experience testing native mobile apps
• Review, optimise and maintain QA processes
• Experience creating STDs and STPs
• Proficiency in manual testing, including functional, regression, integration and UAT testing
• Basic knowledge of Blockchain and Web3 technologies
• Familiar with API testing & databases
• Familiar with project management tools like Jira

Bonus skills

• QA automation with a focus on blockchain technologies
• Proficiency in programming languages such as Python, JavaScript
• Experienced in automated testing tools (e.g Selenium, Appium)

We got you covered

Working remotely is more than just a benefit or a perk. We believe in the power of remote work to unleash creativity and passion. Join our globally remote team with 35+ different nationalities and enjoy the flexibility to work from anywhere in the universe. You should be available during European working hours.

Join our team and pursue your passions on your own terms, while we provide you with learning and development budgets, personal development plans and team retreats to fuel your web3 curiosity.

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Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7)

We transform successful businesses by turning their proven processes into powerful software systems.

We’re looking for developers who take pride in crafting solutions that help these businesses grow.

Do you…

• find satisfaction in understanding how businesses work and making them better through technology?
• take pride in building software that stands the test of time?
• excel at methodically working through complex challenges until they’re solved perfectly?
• enjoy focusing deeply on one project and seeing it through to completion?

Are you…

• someone who enjoys mastering your tools and continuously improving?
• detail-oriented with an eye for systematic approaches?
• comfortable owning projects from start to finish?
• drawn to building solutions that create order from complexity?

Here’s what makes our work different

We’re not just building software – we’re creating systems that transform how businesses operate. Our clients trust us to understand their complex processes and turn them into elegant, efficient solutions.

Join a team of other self-motivated iniduals who excel at their craft. We take pride in the work we do and get excited about solving problems. We only hire self-motivated “drivers” and developers with lots of experience.

You’ll join a team that values

• Time to think through solutions properly
• Deep understanding of business processes
• Consistent, high-quality execution
• Protected focus time for complex challenges
• Long-term reliability over quick fixes

Your Day-to-Day

• Build custom platforms that turn manual processes into efficient systems
• Create intuitive interfaces that simplify complex operations
• Develop sophisticated integrations between modern and legacy systems
• Design robust reporting solutions that provide real business intelligence
• Craft solutions that help successful businesses scale

Experience Required

• Expert-level React development
• Strong background in TypeScript and Next.js
• Using AI assistance tools to develop better software
• Experience building and maintaining large-scale applications
• Clear written communicator that prefers emails to meetings
• Portfolio showing systematic, well-structured work

Bonus Points

• Experience building AI-powered tools (RAG, LLM, etc.)
• Experience building ERP/CRM systems
• Working with Django/Python background
• React Native experience
• Mad `/giphy` skills on Slack (or a desire to learn)

The Environment

• Stable, focused work environment
• Protected development time
• Regular, predictable schedule
• Email > meetings

Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7)

We transform successful businesses by turning their proven processes into powerful software systems. 

We’re looking for developers who take pride in crafting solutions that help these businesses grow.

Do you...

• find satisfaction in designing systems that bring order to complex business operations?
• take pride in building robust architectures that scale reliably?
• excel at modeling complex business processes into elegant data structures?
• enjoy deeply understanding business problems before crafting solutions?

Are you…

• someone who enjoys mastering your tools and continuously improving?
• detail-oriented with an eye for systematic approaches?
• comfortable owning projects from start to finish?
• drawn to building solutions that create order from complexity?

Here’s what makes our work different

We’re not just building software – we’re creating systems that transform how businesses operate. Our clients trust us to understand their complex processes and turn them into elegant, efficient solutions.

Join a team of other self-motivated iniduals who excel at their craft. We take pride in the work we do and get excited about solving problems. We only hire self-motivated “drivers” and developers with lots of experience.

You’ll join a team that values

• Time to think through solutions properly
• Deep understanding of business processes
• Consistent, high-quality execution
• Protected focus time for complex challenges
• Long-term reliability over quick fixes

Your Day-to-Day

• Design and build robust backends that power business transformation
• Create sophisticated data models that reflect complex business rules
• Develop reliable integrations between modern and legacy systems
• Build powerful APIs that connect disparate business systems
• Implement secure, scalable solutions for business-critical operations

Experience Required

• Expert-level Django development with deep understanding of the ORM
• Strong background in Python and API design
• Experience building and maintaining large-scale applications
• Excellence in database design and optimization
• Understanding of complex data modeling and migrations
• Clear written communicator that prefers emails to meetings
• Portfolio showing systematic, well-structured work

Bonus Points

• Experience building AI-powered tools (RAG, LLM, etc.)
• Experience building ERP/CRM systems
• React/Next.js familiarity
• Business process automation experience
• Data integration and ETL knowledge
• Mad `/giphy` skills on Slack (or a desire to learn)

The Environment

• Stable, focused work environment
• Protected development time
• Regular, predictable schedule
• Email > meetings