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React Substrate

<p>We're looking for a frontend developer to help build a cross-chain decentralized exchange (DEX) UI. The ideal person has 3–5+ years of experience with React, Next.js, and TypeScript, and has worked on Web3 apps before. They should be comfortable integrating wallets like MetaMask, WalletConnect, and Coinbase using libraries like Wagmi, RainbowKit, or Web3Modal. Strong knowledge of Ethers.js is key for handling Ethereum and EVM-based chains. </p><p>Bonus points if they’ve worked with Substrate/Polkadot.js, since the DEX backend is built on that stack. They should understand how wallet connections, signatures, RPCs, and chain switching work, and ideally be able to troubleshoot cross-chain quirks. Experience with decentralized protocols and privacy-focused coins like Monero or Bitcoin is a plus. </p><p>We want someone who writes clean, maintainable code, is security-conscious (especially around wallet/key handling), and can collaborate with backend and design teams. Experience with Tailwind or similar CSS frameworks is great. It’s a plus if they’ve built or contributed to crypto DEXs, trading UIs, or DeFi dashboards.</p><p>Reach out and we’ll brief you on the stack, scope, and product vision.</p>

Web3 Frontend Engineer - React/TypeScript

<p>EoT Labs and flagship project peaq were founded under the belief that a better trajectory for humanity exists. We’re focused on harnessing the power of modern technology to build a global, borderless, machine economy that works for all humans on earth – the 100%, not just the 1%.</p><p>Today, more than 20 industries are already being positively shaped by this next generation of apps built on the peaq network. This is an opportunity to join a team of performance-driven entrepreneurs, engineers, and creatives, on a mission to unlock the Age of Abundance.</p><p><strong>Key Responsibilities:</strong></p><ul><li>Design, develop, and maintain Web3 applications leveraging blockchain technologies.</li><li>Implement smart contracts for NFTs (ERC-721, ERC-1155), ERC-20 tokens, and DeFi protocols.</li><li>Develop and optimize backend services using PHP (Laravel), Node.js, and Python.</li><li>Build and integrate front-end applications using Next.js and React.</li><li>Work with the Polkadot ecosystem, including Substrate-based blockchains.</li><li>Collaborate with DevOps teams to ensure high availability and security of blockchain applications.</li><li>Stay updated with the latest trends in Web3, blockchain security, and smart contract development.</li></ul><p><strong>Qualifications & Requirements:</strong></p><ul><li>5+ years of experience in software development with a focus on Web3.</li><li>Strong knowledge of blockchain fundamentals, smart contracts, and cryptographic principles.</li><li>Proficiency in PHP (Laravel), Node.js, and Python.</li><li>Experience with Next.js for front-end development.</li><li>Expertise in Ethereum standards (ERC-20, ERC-721, ERC-1155) and NFT marketplace development.</li><li>Experience working with Polkadot and Substrate-based blockchains.</li><li>Strong understanding of API integrations, WebSockets, and event-driven architectures.</li><li>Experience with IPFS, decentralized storage, and smart contract security best practices.</li><li>Knowledge of cloud services such as AWS, GCP, or Azure.</li></ul>

Senior Software Engineer (Freelance)

Subspace Labs is an early-stage, venture-backed startup with a remote-first, globally distributed team. To learn more, visit our <a href="https://www.subspace.network/" rel="noopener noreferrer nofollow ugc" target="_blank">website</a>, view our <a href="https://subspacelabs.notion.site/Subspace-Labs-Team-Handbook-6806dc3dc33d4795869db79b061ab789" rel="noopener noreferrer nofollow ugc" target="_blank">team handbook</a>, and read the <a href="https://subspace.network/blog/subspace-network-whitepaper" rel="noopener noreferrer nofollow ugc" target="_blank">technical whitepaper</a>.We are seeking a Senior Full-Stack JS/TS Developer to complement our product engineering team. Responsibilities include contributing to several user-facing apps (wallet, block explorer, desktop app), integrating with other blockchain networks and decentralized protocols, maintaining a developer SDK, and building decentralized apps that demonstrate the potential of the Subspace Network.<h3>In this role, you will...</h3><ul><ul><li><b>Build </b>user flows across both web and backend (React and Node).</li><li><b>Integrate</b> directly with other blockchain networks using native RPCs.</li><li><b>Collaborate</b> with Product, Design, and Engineering to define, prioritize, and build features for Web3 <a href="http://users.drive/" rel="noopener noreferrer nofollow ugc" target="_blank">users.</a></li><li><b>Drive </b>detailed project definition and cross-functional alignment.</li><li><b>Design </b>and architect backend REST and/or GraphQL APIs.</li></ul></ul><h3>Key Requirements:</h3><ul><ul><li>3+ years of experience building open-source code that is clean, maintainable, and well-tested, for production networks at scale.</li><li>2 + years of experience working with Typescript and Node.js</li><li>2+ years of experience of experience with Ethers/Web3.js or Polkadot.js.</li><li>2+ years of experience working with React.jsExperience working with container technologies like Docker.</li><li>A passion for decentralized, peer-to-peer systems and Web3 technologies.</li></ul></ul><h3>Bonus Points:</h3><ul><ul><li>Experience with the Rust programming language</li><li>Familiarity with Substrate and the Polkadot ecosystem</li><li>Experience building developer SDKs and internal tools.</li><li>Experience writing smart contracts in Solidity or similar language.</li><li>Theoretical knowledge of blockchains and distributed systems.</li></ul></ul><b>What We Offer</b>𐄁 The ability to work from anywhere in the world 𐄁 A competitive salary with generous equity and token grants 𐄁 Medical, dental, and vision insurance (US-based only) 𐄁 A unique opportunity to shape the future of the internet𐄁 Team off-sites in various locations around the globe

Product Engineer (Fullstack)

<p>As stewards of the Polkadot and Substrate ecosystem, Parity is laying the foundation for a better web which respects the freedom and data of individuals and empowers developers to create better services through decentralised technology. The internet is too important to billions of people for it to be at the mercy of a few powerful companies. </p>
<p>Like Polkadot, Parity was built on a foundation of being decentralised and open, which trickles down to how we work. We’re a distributed organisation and have been from the beginning. Being distributed isn’t just a way of doing business—it’s a mentality that is at the core of our culture. We have a flat structure that pushes power to the edges and empowers our people to take ownership of their role, authority coupled with responsibilities.</p>

<h3>About the role:</h3>
<p>The role is about building user facing applications and reusable UI components that help millions of people interact with the Polkadot Network and move forward the Web3 vision.This requires thinking about UI from the standpoint of the protocol developer, the frontend developer and the end user. The resulting UI components should empower front-end developers to craft chain-backed experiences which delight end users. You will make use of cutting edge technologies built in-house at Parity (for instance <a href="https://github.com/paritytech/capi" rel="noopener noreferrer nofollow ugc" target="_blank">Capi</a>), helping to set a standard in the developer community building on Substrate.</p>
<h3>About the team:</h3>
<p>All our projects are open source and most of our communication happens on GitHub. Our team is based across multiple timezones, so we tend to favour asynchronous communication over meetings and ceremonies. Familiarity with open source workflows on GitHub is highly appreciated.We are highly autonomous so we look for someone who is driven by passion and can deliver without precise step-by-step instructions coming from above.</p>

<h3>Requirements:</h3>
<ul>
<li>Due to the nature of our work we can only consider applicants with production experience on complex TypeScript projects.</li>
<li>Advanced expertise with TypeScript and React is a must, but we value production experience with other frontend frameworks as long as they make use of a type system.</li>
<li>Expert knowledge of patterns that help with effective state management is highly appreciated</li>
<li>Strong problem solving and debugging skills</li>
<li>We look for excellent communicators, who actively participate in planning and driving new features.</li>
<li>Experience building Web3 apps is a plus, but not a must. You just have to be passionate about frontend tech.</li>
</ul>
<h3>Tasks:</h3>
<ul>
<li>Collaborate with designers, other developers and the open source community to determine optimal routes to best-meet the needs of users</li>
<li>Write clean, easy-to-understand, idiomatic front-end TypeScript</li>
<li>Relentlessly drive for more intuitive and useful UI and approaches to UI, across the org</li>
</ul>

<h3>About working for us:</h3>
<h3>For everyone who joins us:</h3>
<ul>
<li>Competitive remuneration packages, including tokens (where legally possible), based on iterative market research</li>
<li>Remote-first, global working environment with flexible hours</li>
<li>Collaborative, fast-paced, and self-initiating culture, designed to mimic an open source workflow</li>
<li>Energising and collaborative team and company retreats all over the world</li>
<li>Opportunity to learn more about Web3 while on the job, with access to some of the brightest minds in this space; we have plenty of educational initiatives such as internal sessions, all-hands, AMAs, hackathons, etc.</li>
<li>Teammates who are genuinely excited about their job, impact, and Parity’s mission</li>
<li>Opportunity to relocate to Germany or Portugal</li>
</ul>
<h3>For those joining us as employees in Germany, Portugal, or the U.K.:</h3>
<ul>
<li>28 paid vacation days per year</li>
<li>Work laptop (macOS or Linux-based) and equipment to enable you to work successfully</li>
</ul>
<ul>
<li>£2,500 yearly learning and development budget for conferences or courses of your choice</li>
</ul>

<p><em>Not a perfect match to our requirements? We're still excited to receive your application and hear how you think you can help us achieve our mission.</em></p>
<p><a href="https://www.parity.io/applicant-notice/" rel="noopener noreferrer nofollow ugc" target="_blank">To see how we use your data please see our Applicant Notice.</a></p>


Senior Front-end Engineer - Apps

<b>Who We Are</b>Subspace Network is building a radically decentralized, next-generation blockchain which allows developers to easily run Web3 apps at Internet scale. Subspace is based on original research funded by the US National Science Foundation and plans to launch its Network later this year. Subspace Labs is an early-stage, venture-backed startup with a remote-first, globally distributed team. To learn more, visit our <a href="https://www.subspace.network/" rel="noopener noreferrer nofollow ugc" target="_blank">website</a>, view our <a href="https://subspacelabs.notion.site/Subspace-Labs-Team-Handbook-6806dc3dc33d4795869db79b061ab789" rel="noopener noreferrer nofollow ugc" target="_blank">team handbook</a>, and read the <a href="https://subspace.network/blog/subspace-network-whitepaper" rel="noopener noreferrer nofollow ugc" target="_blank">technical whitepaper</a>.We are seeking a Lead Full-Stack Engineer to complement our product engineering team. Responsibilities include facilitating the engineering management process across our product application teams in addition to contributing to several user-facing apps (wallet, block explorer, CLI, desktop app), integrating with other blockchain networks and decentralized protocols, maintaining a developer SDK, and building decentralized apps that demonstrate the potential of the Subspace Network.<h3>In this role you will: </h3><ul><ul><li>Collaborate directly with the Head of Product to translate our product roadmap into actionable engineering implementation plans.</li><li>Identify the key tasks and critical path, anticipating potential roadblocks.</li><li>Build user flows across both web and backend (React and Node).</li><li>Integrate directly with other blockchain networks using native RPCs.</li><li>Drive detailed project definition and cross-functional alignment.</li><li>Design and architect backend REST and/or GraphQL APIs.</li></ul></ul><h3>Key Requirements:</h3><ul><ul><li>5+ years of experience building open-source code that is clean, maintainable, and well-tested, for production networks at scale.</li><li>2+ years of experience leading engineering teams in blockchain, crypto, or Web3.</li><li>2 + years of experience working with Typescript and Node.js.</li><li>2+ years of experience of experience with Ethers/Web3.js or Polkadot.js.</li><li>2 + years of experience working with React.js and Node.js.</li><li>Theoretical knowledge of blockchains and distributed systems.</li><li>Experience working with container technologies like Docker.</li><li>A passion for decentralized, peer-to-peer systems and Web3 technologies.</li></ul></ul><h3>Bonus Experience:</h3><ul><ul><li>Experience with the Rust programming language.</li><li>Familiarity with Substrate and the Polkadot ecosystem.</li><li>Experience building developer SDKs and internal tools.</li><li>Experience writing smart contracts in Solidity or similar language.</li><li>Experience working with the Tauri desktop application framework.</li></ul></ul><h3> What We Offer:</h3><ul><ul><li>Work remotely from anywhere in the world with a talented team of globally distributed individuals.  </li><li>A competitive salary with generous equity and token grants.</li><li>Medical, dental, and vision insurance (US based only). </li><li>A unique opportunity to shape the future of the Subspace Network and play a critical role in building the world’s most scalable blockchain.</li><li>Company-sponsored team offsites in various locations around the world.</li></ul></ul>

Lead Full-Stack Engineer

Web3 React Substrate jobs and other crypto companies

Browse many opportunities Web3 React Substrate Jobs at. Apply now. updated June 2026!

Job Title	Company Name	Salary	Location	Tags
V Web3 Frontend Engineer - React/TypeScript	VostoEmisio	5k/month	Remote	DEXDeveloperWeb3Remote
Senior Software Engineer (Freelance)	EoT Labs		Remote	RemoteWeb3DeveloperFreelance
Product Engineer (Fullstack)	Subspace Labs			RemoteWeb3DeveloperEngineering
Senior Front-end Engineer - Apps	Parity Technologies			RemoteResearchCommunityDeveloper
Lead Full-Stack Engineer	Subspace Labs			RemoteResearchDeveloperEngineering

Web3 React Substrate Jobs

Expired React Substrate Jobs.

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Web3 Frontend Engineer - React/TypeScript

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