Javascript Jobs in Web3

Are you a talented Senior Developer looking for a remote job that lets you showcase your skills and earn competitive 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 71 countries.

We are currently looking for Senior Blockchain Developers for different projects.

Requirements – Senior Blockchain Developer with Ethereum:

• 4+ years of software development experience.
• 3+ years of Ethereum ecosystem expertise, including Ethers.js or Web3.js (required).
• Experience with React and Node.js, including at least 2 commercial projects.

Requirements – Senior Blockchain Developer with Solidity:

• 4+ years of software development experience.
• 3+ years of expertise in Solidity (required).

Requirements – Senior Blockchain Developer with Solana:

• 4+ years of software development experience.
• 3+ years of expertise in Solana (required).

Other requirements:

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

We have multiple projects available for Senior Developers. If you have 4+ years of commercial software development experience and are proficient in any of the following areas: Data annotation, AI Engineering, PHP & Angular, React & Java, Data Science, Blockchain (Web3/Solidity/Solana), Symfony & React, Symfony & Vue, Symfony & Angular, Symfony & JavaScript & Next.js & TypeScript, Data Analysis, React & PHP, Data Engineering, PHP & Vue, Vue & Node.js, DevOps, Android & iOS, Angular & Node.js, React & Golang, Python & Vue, MLOps, Rust, Golang, Shopify & JavaScript, Unreal Engine & C++, Python & LLM, Unity, Vue & Nuxt, Java & Spring, ML Engineering, or Python & Flask — we’d be happy to connect and match you with a suitable project.

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

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

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

P.S. We work with developers from 71+ countries in different regions: Europe, LATAM, the U.S (if you are an owner of W-9 ben form), Canada, Asia (Japan, Singapore, South Korea, 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: Hungary, 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.

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