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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. 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. 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.Reach out and we’ll brief you on the stack, scope, and product vision.

Web3 Frontend Engineer - React/TypeScript

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%.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.Key Responsibilities:<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>Qualifications & Requirements:<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)

ChainSafe is a leading blockchain research and development firm specializing in infrastructure solutions for the decentralized web. Alongside its contributions to significant ecosystems such as Ethereum, Polkadot, Filecoin, Mina, and more, ChainSafe creates solutions for developers and teams across the web3 space utilizing our expertise in gaming, bridging, NFTs, and decentralized storage. As part of the mission to build innovative products for users and better tooling for developers, ChainSafe embodies an open-source and community-oriented ethos.
To learn more about ChainSafe, look at our Discord, GitHub, and website.
Here’s what you need to know before reading on:
<ul>
<li>Our progressive tech stack includes Go, Rust, and TypeScript</li>
<li>We spearhead ecosystem projects like <a href="https://github.com/ChainSafe/lodestar" rel="noopener noreferrer nofollow ugc" target="_blank">Lodestar</a>, <a href="https://github.com/ChainSafe/web3.js" rel="noopener noreferrer nofollow ugc" target="_blank">Web3.js</a>, <a href="https://github.com/ChainSafe/forest" rel="noopener noreferrer nofollow ugc" target="_blank">Forest</a>, <a href="https://github.com/ChainSafe/mina-rs" rel="noopener noreferrer nofollow ugc" target="_blank">Mina-rs</a>, and <a href="https://github.com/ChainSafe/gossamer" rel="noopener noreferrer nofollow ugc" target="_blank">Gossamer</a></li>
<li>We are global, remote-friendly, and open to contractors</li>
</ul>
At ChainSafe, you’ll be part of a team that believes in the community's vital importance and contributes to advancing humanity with open-source and decentralized technology.
The following details a description, responsibilities, requirements, and otherwise supporting information for those seeking to work in a Developer Relations/Advocacy role for Sygma.

<h3>Description</h3>
ChainSafe is seeking a motivated Developer Relations individual to represent Sygma - The interoperability layer for building cross-blockchain applications.
We believe that cross-chain interoperability is the fundamental enabler for the next wave of growth in the blockchain industry. Sygma will empower builders to create streamlined experiences where users are not confined to one ecosystem. By enabling elaborate cross-chain functionality and putting most of the steps under the hood, Sygma will enable smooth, web2-like user experiences. Please find more information about Sygma on the Sygma Website.
The ideal candidate will have experience working in the software product development cycle with an emphasis on developer user experience, including education and community engagement.
An individual in this role will work closely with the Marketing, Communications teams as well as with specific-product teams within ChainSafe. Much of the work will consist of engaging with our ever-growing Discord community, contributing to or participating in ecosystem events (ie, Devcon, ETHDenver), and otherwise supporting ChainSafe's vision of educating and empowering the next million developers into the web3 ecosystem, by way of Sygma.
We’re looking for a versatile individual who understands developer's needs and struggles and is ready and able to apply creative strategies to solve interesting problems surrounding community engagement and helping to educate a global audience of developers transitioning into web3.
<h3>Responsibilities</h3>
<ol>
<li>Developer Success
<ul>
<li>Definition and implementation of the Developer Success strategy for Sygma, including education, resources, outreach, community development, and feedback.</li>
<li>Assisting customers with the design and implementation of their cross chain applications using Sygma. Propose tailored cross-chain solutions to different prospect communities and facilitate respective cross-chain related discussions in forums and beyond.</li>
<li>Owning and managing our developer documentation site. Writing content (technical by nature) to be used for a variety of purposes including: video walkthroughs, tutorials, blog posts and case studies.</li>
</ul>
</li>
<li>Community Engagement
<ul>
<li>Serve as the key intermediary between Sygma Labs' development team and the external developer ecosystem.</li>
<li>Offering mentoring, support and guidance for Sygma’s developer ecosystem and its communities (Discord, Twitter); both online as well as offline/physical events (ie, meetups, hackathons, conferences).</li>
<li>Participate in relevant discussions around interoperability and become a vocal ambassador for Sygma</li>
<li>Engaging with the Sygma’s ecosystem of developers and extended community to collect feedback and report back to the team for continued product improvement.</li>
</ul>
</li>
<li>Ecosystem-Driven Feedback
<ul>
<li>Absorbing a wide scope of understanding of the entire web3 ecosystem and working with the Sygma PM to better inform the product’s market-fit.</li>
<li>Create an engagement vault and create Bi-Weekly Reports</li>
</ul>
</li>
</ol>
<h3>Requirements</h3>
<ul>
<li>Previous experience as engineer/DevRel on comparable interoperability or DeFi protocols.</li>
<li>Proof in action (showcasing knowledge; eg, Discord, Stack Overflow, Reddit, Medium,Dev.to)</li>
<li>Ability to explain technical concepts in an easy to understand manner.</li>
<li>Ability to read and understand a programming language and work with various technologies in our stack.
<ul>
<li>Examples:
<ul>
<li>Go, Solidity, Typescript, Rust, Shell, Docker</li>
</ul>
</li>
</ul>
</li>
<li>Ability to multitask and balance a variety of initiatives.</li>
<li>Strong soft skills in customer relations, marketing, and communications.</li>
<li>Strong comprehension of industry trends and product-market fit.</li>
<li>Passionate about distributed systems and what web3 can do for the world.</li>
</ul>
<h3>Nice to have</h3>
<ul>
<li>Engineering background.</li>
<li>Experience in building, deploying, or otherwise maintaining web3 applications and protocols, especially those of the open-sourced variety.</li>
<li>Experience working in the interoperability space.</li>
</ul>
If you feel like you’re the perfect fit for the role, please apply even if you don’t match all the requirements.
Hiring Steps
<ul>
<li>Selected candidates will be invited to a 30-to–45-minute screening call with one of our tech recruiters</li>
<li>Next, candidates will be invited to a 60-minute values interview with one of our team members</li>
<li>Then, candidates will be asked to complete a technical task in under 4 hours, but we provide up to 5 business days to complete it</li>
<li>Lastly, candidates will be invited to a 60-minute interview with the hiring team members</li>
</ul>
Why Join ChainSafe
Founded by developers for developers, ChainSafe is a remote-first company with an international team. We continue to provide opportunities for personal and professional growth, value autonomy and responsibility, have a results-driven environment, and offer flexible work hours.
We care deeply about our values and look for these attributes in every new team member. In addition, we recognize the benefits of cultivating a diverse team and aspire to embed respect for all people into our culture. We encourage women, the LGBTQIA+ community, people of colour, and members of any other group underrepresented in the blockchain space (or tech in general) to apply.
How to Apply
Please fill out the Greenhouse application form below and ensure that you attach your resume and link your Github/Gitlab profile or any software project you have contributed to (if applicable).

Developer Relations - Sygma

ChainSafe is a leading blockchain research and development firm specializing in infrastructure solutions for the decentralized web. Alongside its contributions to significant ecosystems such as Ethereum, Polkadot, Filecoin, Mina, and more, ChainSafe creates solutions for developers and teams across the web3 space utilizing our expertise in gaming, bridging, NFTs, and decentralized storage. As part of the mission to build innovative products for users and better tooling for developers, ChainSafe embodies an open-source and community-oriented ethos.
To learn more about ChainSafe, look at our Discord, GitHub, and website.
Here’s what you need to know before reading on:
<ul>
<li>Our progressive tech stack includes Go, Rust, and TypeScript</li>
<li>We spearhead ecosystem projects like <a href="https://github.com/ChainSafe/lodestar" rel="noopener noreferrer nofollow ugc" target="_blank">Lodestar</a>, <a href="https://github.com/ChainSafe/web3.js" rel="noopener noreferrer nofollow ugc" target="_blank">Web3.js</a>, <a href="https://github.com/ChainSafe/forest" rel="noopener noreferrer nofollow ugc" target="_blank">Forest</a>, <a href="https://github.com/ChainSafe/mina-rs" rel="noopener noreferrer nofollow ugc" target="_blank">Mina-rs</a>, and <a href="https://github.com/ChainSafe/gossamer" rel="noopener noreferrer nofollow ugc" target="_blank">Gossamer</a></li>
<li>We are global, remote-friendly, and open to contractors</li>
</ul>
At ChainSafe, you’ll be part of a team that believes in the community's vital importance and contributes to advancing humanity with open-source and decentralized technology.
The following details a description, responsibilities, requirements, and otherwise supporting information for those seeking to work in a Developer Relations/Advocacy role for Sygma.

<h3>Description</h3>
ChainSafe is seeking a motivated Developer Relations-Solutions Enginer individual to represent Sygma - The interoperability layer for building cross-blockchain applications.
We believe that cross-chain interoperability is the fundamental enabler for the next wave of growth in the blockchain industry. Sygma will empower builders to create streamlined experiences where users are not confined to one ecosystem. By enabling elaborate cross-chain functionality and putting most of the steps under the hood, Sygma will enable smooth, web2-like user experiences. Please find more information about Sygma on the Sygma Website.
The ideal candidate will have experience working in the software product development cycle with an emphasis on developer user experience, including education and community engagement.
An individual in this role will work closely with the Marketing, Communications teams as well as with specific-product teams within ChainSafe. Much of the work will consist of engaging with our ever-growing Discord community, contributing to or participating in ecosystem events (ie, Devcon, ETHDenver), and otherwise supporting ChainSafe's vision of educating and empowering the next million developers into the web3 ecosystem, by way of Sygma.
We’re looking for a versatile individual who understands developer's needs and struggles and is ready and able to apply creative strategies to solve interesting problems surrounding community engagement and helping to educate a global audience of developers transitioning into web3.
<h3>Responsibilities</h3>
<ol>
<li>Developer Success
<ul>
<li>Definition and implementation of the Developer Success strategy for Sygma, including education, resources, outreach, community development, and feedback.</li>
<li>Assisting customers with the design and implementation of their cross chain applications using Sygma. Propose tailored cross-chain solutions to different prospect communities and facilitate respective cross-chain related discussions in forums and beyond.</li>
<li>Owning and managing our developer documentation site. Writing content (technical by nature) to be used for a variety of purposes including: video walkthroughs, tutorials, blog posts and case studies.</li>
</ul>
</li>
<li>Community Engagement
<ul>
<li>Serve as the key intermediary between Sygma Labs' development team and the external developer ecosystem.</li>
<li>Offering mentoring, support and guidance for Sygma’s developer ecosystem and its communities (Discord, Twitter); both online as well as offline/physical events (ie, meetups, hackathons, conferences).</li>
<li>Participate in relevant discussions around interoperability and become a vocal ambassador for Sygma</li>
<li>Engaging with the Sygma’s ecosystem of developers and extended community to collect feedback and report back to the team for continued product improvement.</li>
</ul>
</li>
<li>Ecosystem-Driven Feedback
<ul>
<li>Absorbing a wide scope of understanding of the entire web3 ecosystem and working with the Sygma PM to better inform the product’s market-fit.</li>
<li>Create an engagement vault and create Bi-Weekly Reports</li>
</ul>
</li>
</ol>
<h3>Requirements</h3>
<ul>
<li>Previous experience as engineer/DevRel on comparable interoperability or DeFi protocols.</li>
<li>Proof in action (showcasing knowledge; eg, Discord, Stack Overflow, Reddit, Medium,Dev.to)</li>
<li>Ability to explain technical concepts in an easy to understand manner.</li>
<li>Ability to read and understand a programming language and work with various technologies in our stack.
<ul>
<li>Examples:
<ul>
<li>Go, Solidity, Typescript, Rust, Shell, Docker</li>
</ul>
</li>
</ul>
</li>
<li>Ability to multitask and balance a variety of initiatives.</li>
<li>Strong soft skills in customer relations, marketing, and communications.</li>
<li>Strong comprehension of industry trends and product-market fit.</li>
<li>Passionate about distributed systems and what web3 can do for the world.</li>
</ul>
<h3>Nice to have</h3>
<ul>
<li>Engineering background.</li>
<li>Experience in building, deploying, or otherwise maintaining web3 applications and protocols, especially those of the open-sourced variety.</li>
<li>Experience working in the interoperability space.</li>
</ul>
If you feel like you’re the perfect fit for the role, please apply even if you don’t match all the requirements.
Hiring Steps
<ul>
<li>Selected candidates will be invited to a 30-to–45-minute screening call with one of our tech recruiters</li>
<li>Next, candidates will be invited to a 60-minute values interview with one of our team members</li>
<li>Then, candidates will be asked to complete a technical task in under 4 hours, but we provide up to 5 business days to complete it</li>
<li>Lastly, candidates will be invited to a 60-minute interview with the hiring team members</li>
</ul>
Why Join ChainSafe
Founded by developers for developers, ChainSafe is a remote-first company with an international team. We continue to provide opportunities for personal and professional growth, value autonomy and responsibility, have a results-driven environment, and offer flexible work hours.
We care deeply about our values and look for these attributes in every new team member. In addition, we recognize the benefits of cultivating a diverse team and aspire to embed respect for all people into our culture. We encourage women, the LGBTQIA+ community, people of colour, and members of any other group underrepresented in the blockchain space (or tech in general) to apply.
How to Apply
Please fill out the Greenhouse application form below and ensure that you attach your resume and link your Github/Gitlab profile or any software project you have contributed to (if applicable).

DeveRel - Solutions Engineer

About Us:Analog is building a true Layer-0 blockchain network that ushers in the omnichain future, secured with the Proof-of-Time consensus mechanism.Backed by world-class investors, our vision is to facilitate the seamless communication of time data (events) between decentralized applications across different chains.We are a decentralized, non-hierarchical team seeking an expert Substrate/Rust Developer (experience building on Polkadot is a plus!) to assist with the design, development, implementation of this new Blockchain proof of concept.This expert will be collaborating in the development of a testnet with all use-case specific core features i.e. blockchain runtime, multichain support, protocol interoperability, consensus mechanism, gRPC, APIs, new smart contract scripting system, and numerous other protocols.As a founding engineer on the Analog team, you’ll be redefining the legacy blockchain frameworks eliminating their inherent limitations i.e. interoperability, etc with radically new solutions, breaking new ground on writing code to achieve a truly future-proof system.<h3>About the role</h3><ul><ul><li>Drive core technical projects for PoC clients from inception to completion (full life cycle)</li><li>Collaborate in the design and implementation of novel consensus mechanisms</li><li>Collaborate in the design and development of network onboarding tools</li><li>Participate in Design & Development of SDK for interoperable support</li><li>Collaborate and supervise the development of Defi infrastructure, decentralized applications, smart contracts, protocols, lending/trading applications, and more (examples: <a href="https://defipulse.com/defi-list/" rel="noopener noreferrer nofollow ugc" target="_blank">https://defipulse.com/defi-list/</a>)</li><li>Optionally quality and reliability through automated testing design for your projects</li><li>Mentor fellow peers and assist code reviews</li><li>Engage with our open source community</li></ul></ul><h3>About you</h3><ul><ul><li>5+ years of experience in computer science, preferably low level.</li><li>Seasoned with core system programming languages & concepts, specifically with Rust and Substrate.</li><li>2+ years of experience in blockchain, consensus protocols, decentralized systems, applied cryptography, compilers, p2p, or similar systems</li><li>Must have 1+ year experience in Substrate.</li><li>Experience in Tailored system applications in Rust, Substrate, Go, or C++</li><li>Proficiency with Network Protocols, i.e HTTP/2, TCP/2, P2P, IPFS</li><li>Experience in architect and implementation of use case-specific network protocol or database is a plus.</li></ul></ul><h3>Benefits</h3><ul><ul><li>Highly competitive salary and token compensation with huge growth potential</li><li>Be a founding engineer of one of the most innovative protocols to exist in blockchain</li><li>Supercharge your career in Web3 - the future of the internet</li><li>Work closely with team members who have a wide breadth of experience from some of the leading tech companies in the world</li><li>Flexible working hours and working environment</li></ul></ul>Analog fosters an inclusive work environment that doesn’t tolerate unjust discrimination against race, religion, gender, disability, age or other qualities. We encourage anyone from around the world to apply as long as they meet the job requirements!

Senior Substrate/Rust Engineer

US Dollar

San Francisco

Web3 DeFi Polkadot jobs and other crypto companies

Browse many opportunities Web3 DeFi Polkadot 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
Developer Relations - Sygma	ChainSafe Systems			RemoteWeb3Non TechMarketing
DeveRel - Solutions Engineer	ChainSafe Systems			RemoteWeb3Non TechMarketing
Senior Substrate/Rust Engineer	Analog		📍 San Francisco, California	Web3Non TechTradingCommunity

Web3 DeFi Polkadot Jobs

Expired DeFi Polkadot Jobs.

Past and filled jobs:

Web3 Frontend Engineer - React/TypeScript

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