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Dex React

<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

<h3><strong>About Mangrove</strong></h3><p><a href="https://mangrove.exchange/" rel="noopener noreferrer nofollow ugc" target="_blank"><strong>Mangrove</strong></a> is an order book DEX allowing liquidity providers to attach smart contracts to their offers. Linking arbitrary code with on-chain trading unlocks a new design space for DeFi. We are backed by some of the best investors in the ecosystem and as a team, we value expertise, creativity, autonomy, and knowledge sharing.</p><p>🐒 Mangrove is looking to hire a <strong>senior Frontend/Blockchain Developer</strong>. This is a full-time position in Paris, however, remote can be an option.</p><h3><strong>What you’ll do</strong></h3><p>As a <strong>Frontend Developer at Mangrove</strong>, you will play a crucial role in building and optimizing the user interface for our decentralized exchange (DEX). You will be responsible for crafting seamless, intuitive, and high-performance experiences that enhance the usability and functionality of our platform.</p><p>We are looking for someone who can bridge design and development, with a strong understanding of <strong>DeFi,</strong> <strong>DEXs and advanced trading interfaces</strong>. They may also occasionally work on other aspects of the project if needed.</p><h3><strong>Requirements:</strong></h3><ul><li>Extensive experience in <strong>React, and modern frontend frameworks</strong></li><li>Strong experience building complex Web3 applications and interacting with smart contracts</li><li>Deep <strong>understanding of DEX mechanics, perpetual trading, and DeFi protocols</strong></li><li>Experience in <strong>optimizing UI/UX for performance and accessibility</strong></li><li>Familiarity with blockchain infrastructure and EVM interactions</li><li>Experience <strong>operating a live protocol/product</strong></li><li>Able to work within the CET (Central European Time) timezone for team meetings</li><li>Excellent verbal and written communication in English</li></ul><h3><strong>Bonus points:</strong></h3><ul><li>Experience with backend integrations and full-stack development</li><li>Passion for DeFi, trading, and Web3 innovation</li><li>Have teamwork, communication and organizational skills</li><li>Willingness to constantly learn & improve, challenging yourself to stay at the top of your game</li></ul><h3><strong>What does Mangrove offer?</strong></h3><ul><li>Significant ownership and autonomy in shaping our frontend and user experience</li><li>Competitive annual salary + tokens</li><li>Flexible schedule and remote-friendly environment</li><li>The opportunity to work with a highly experienced and diverse team</li><li>Team retreats held several times a year around the world</li><li>Conferences and continuous learning opportunities</li><li>Career growth and professional development within a cutting-edge DeFi project</li></ul><h3><strong>Want to apply?</strong></h3><p>Fast & efficient hiring process :</p><ol><li>Apply – Send us any project you’re proud of (GitHub, portfolio, CV, etc.)</li><li>Intro call – 20-min chat to discuss your experience & fit.</li><li>Technical test – A hands-on challenge tailored to frontend Web3 development.</li><li>Test review & final interview – Meet the team and dive deeper.</li><li>Offer & welcome to the team!</li></ol><p>📩 Send your application to</p><h3><strong>Links</strong></h3><ul><li><a href="https://www.mangrove.exchange/" rel="noopener noreferrer nofollow ugc" target="_blank">Website</a></li><li><a href="https://docs.mangrove.exchange/" rel="noopener noreferrer nofollow ugc" target="_blank">Documentation</a></li><li><a href="https://twitter.com/MangroveDAO" rel="noopener noreferrer nofollow ugc" target="_blank">Twitter</a></li><li><a href="https://www.linkedin.com/company/mangrovedao/" rel="noopener noreferrer nofollow ugc" target="_blank">LinkedIn</a></li><li><a href="https://github.com/mangrovedao" rel="noopener noreferrer nofollow ugc" target="_blank">GitHub</a></li></ul><h3><strong>Equal Opportunity</strong></h3><p>Mangrove is committed to fostering a <strong>diverse and inclusive work environment</strong>. We encourage all types of profiles to apply and do not discriminate on the basis of race, national origin, religion, gender, sexual orientation, marital status, disability, social origin, or age.</p>

Frontend / Blockchain Developer

Central European Time

The Uniswap Protocol is the largest decentralized trading and automated market making protocol (often called a DEX, “Decentralized Exchange”) on Ethereum.
 
The Uniswap Labs team was a major contributor to the Uniswap Protocol and now focuses on building a suite of products to support the Uniswap Labs ecosystem. Our team is one of the most impactful in crypto. We are headquartered in SoHo in New York City with the option to be partially or fully remote depending on the position.

<p>The Uniswap website and mobile wallet has been used by millions of people to exchange value across digital assets and access the broader web3 ecosystem. We are seeking a detail-oriented, collaborative QA Engineer. As our first QA engineering hire, you will own and iterate on our manual and automated testing processes to enable us to continue quickly shipping high quality features and products.</p>
<h3>Responsibilities</h3>
<ul>
<li>Shape a test-driven engineering culture that prioritizes creating high quality products.</li>
<li>Collaborate with Engineering to establish and evolve formal QA processes, ensuring that the team uses best practices.</li>
<li>Develop and execute test cases, plans, and procedures for web and mobile applications, spanning both frontend UI and backend services.</li>
<li>Reproduce issues and work with engineers and project leads to triaged and prioritize issues for resolution.</li>
<li>Perform stress and performance testing, and partner with Engineering to develop scalable and reliable automated testing frameworks.</li>
</ul>
<h3>Requirements</h3>
<ul>
<li>5+ years experience in Quality Assurance and/or Software development.</li>
<li>Excellent written and verbal communication skills.</li>
<li>Proven experience designing and executing on test plans.</li>
<li>Ability to collaborate with and guide engineering partners, and provide technical guidance to other team members.</li>
<li>Knowledge of application UI (React/React Native), API (Node JS) and BDD automation technologies + test management tools.</li>
<li>Strong knowledge in continuous testing and experience integrating automation scripts in CI/CD pipeline.</li>
<li>Experience troubleshooting issues and identifying the root cause, and writing easy-to-reproduce tickets in tools like Linear/JIRA.</li>
</ul>
<h3>Nice to Haves</h3>
<ul>
<li>Love of unicorns and the color pink</li>
<li>Experience testing/building financial or crypto products</li>
</ul>

<p><em>Minimum full-time salary of $145,000-$155,000. Disclosure in accordance with New York City's Pay Transparency Law. </em><em>Full Time employees at Uniswap Labs are also eligible for other compensation elements, including equity, tokens, and benefits, dependent on the position type.</em></p>



Senior QA Engineer

US Dollar

New York

<b>About Kraken</b>As one of the largest and most trusted <b>digital asset platforms</b> globally, we are empowering people to experience the life-changing potential of crypto. Trusted by over 8 million consumer and pro traders, institutions, and authorities worldwide - our unique combination of products, services, and global expertise is helping tip the scales towards mass crypto adoption. But we’re only just getting started. We want to be pioneers in crypto and add value to the everyday lives of billions. Now is not the time to sit on the sidelines. Join us to bring crypto to the world.To ensure Kraken is the right fit for you, please ensure you read <a href="https://kraken-culture.notion.site/" rel="noopener noreferrer nofollow ugc" target="_blank"><b>Kraken Culture Explained</b></a>to find out more about us!UI Engineering at KrakenKraken’s Software Engineers are tasked with developing cutting edge interfaces that change how millions of users interact with our platform. Our products need to handle processing and displaying huge amounts of real-time information whilst also maintaining an intuitive and friendly user experience, to achieve this engineers with both a strong technical background and keen eye for design are required. We're looking for passionate and talented engineers who can bring fresh ideas and expertise from all industries. As a Software Engineer, you will work as a core member of a fully remote team on a specific project critical to Kraken’s needs with opportunities to switch teams and projects as you and our fast-paced business grow and evolve. We need all of our engineers to display a versatile talent set, from exceptional technical ability to strong communication skills and passion for the monumental change that the crypto industry can bring to society.About the RoleWe’re looking for a legendary Staff Engineer who can take our mobile products to the next level. You will use your strong knowledge of mobile engineering to identify places where we should use native code to improve the overall UX, UI and performance of our mobile products. We demonstrate ownership of tangible outcomes which deliver value to our users. For this role we are looking for an experienced staff engineer with a background in a similar role ideally in a financial / trading environment. You have contributed strongly in building an industry leading mobile app using React Native with the combination of native components.A key goal will be to take the ownership of architectural vision, long term engineering direction and vision for scaling and growing our mobile products. You are expected to know best practices, how to deliver great user experiences and be able to mentor engineers on the team to deliver these, with a down-to-earth attitude. Everybody within the Engineering organization is mission oriented and results driven, we put “accelerating the worldwide adoption of cryptocurrency” above all else and we index heavily on tangible business results over ‘busy work’, It’s not about how much code was written, it’s about how much impact what was delivered with as little as code as possible, or even better solving a problem without writing any new code.<h3>Responsabilities</h3><ul><ul><li>Strong technical understanding of the React Native and native mobile across iOS and Android architecture, performance and ongoing stability of mobile products</li><li>Take ownership and continuously review code to ensure it is scalable, reusable and works across multiple applications inside our repository</li><li>Mentoring and guiding engineering in the mobile team to best practices and working with them to educate</li><li>Excellent communicator to smoothly ensure others understand what is required to change at all levels.</li><li>Experience working with product and engineering leadership to ensure big bets can be made, architectural changes can happen and priorities are understood.</li><li>Excellent communication both written via RFCs / architecture diagrams and verbally to clearly articulate points in meetings and get everyone on the same page is required. </li><li>Keep up to date with the mobile development ecosystems so as to be able to influence future product direction. </li></ul></ul><h3>Requirements </h3><ul><ul><li>At least 8+ years extensive software engineering experience in high performing teams</li><li>6+ years of strong knowledge using React Native and Typescript at scale</li><li>2+ years in a Staff Engineer role</li><li>Objective-C/Swift or Java/Kotlin - iOS and Android native experience and bridging with React Native</li><li>Firm grasp of the JavaScript language and its nuances, including ES6+ syntax and the TypeScript superset</li><li>Ability to teach (and write) new architecture, turbo modules and JSI to the team, knowledge and understanding of C++</li><li>Experience working on either large complex enterprise level systems or proven ability to build a greenfield product from start to finish</li><li>You write high quality, well tested code to meet the needs of your customers.</li><li>Willingness to take extreme ownership of your work and educate engineers to create results</li><li>Ability to work closely with product, engineering and design teams</li><li>Working with leadership and senior management to steer the way of mobile engineering roadmap</li></ul></ul><h3>Nice to have</h3><ul><ul><li>You have worked in the crypto, fintech or security industry </li><li>Knowledge of Rust</li><li>React Native core contributor or experience with the core</li></ul></ul>Location Tagging: #EU #LI-Remote We’re powered by people from around the world with their own unique and diverse experiences. We value all Krakenites and their talents, contributions, and perspectives, regardless of their background. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgable about crypto!As an equal opportunity employer we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. <b>Stay in the know</b><b><a href="https://kraken-culture.notion.site/" rel="noopener noreferrer nofollow ugc" target="_blank">Kraken Culture Explained</a></b><b><a href="https://twitter.com/krakenfx" rel="noopener noreferrer nofollow ugc" target="_blank">Follow us on Twitter</a></b><b><a href="https://blog.kraken.com/" rel="noopener noreferrer nofollow ugc" target="_blank">Catch up on our blog</a></b><b><a href="https://www.linkedin.com/company/kraken-exchange/" rel="noopener noreferrer nofollow ugc" target="_blank">Follow us on LinkedIn</a></b>

Staff Engineer - React Native and Mobile Native

<b>About Wintermute</b><a href="https://www.wintermute.com/" rel="noopener noreferrer nofollow ugc" target="_blank">Wintermute</a>’s mission is to enable, empower and advance the truly decentralized world for more transparent and efficient markets and products.As part of this mission we have incubated a new decentralized trading protocol that will significantly improve the experience of trading on DeFi.<a href="https://www.wintermute.com/" rel="noopener noreferrer nofollow ugc" target="_blank">Wintermute</a> is one of the largest algorithmic trading firms in digital assets globally. We manage billions in assets and trade more than $5B+/day across dozens of different trading platforms. Wintermute provides liquidity algorithmically across most CeFi and DeFi exchanges and via OTC. Wintermute was one of the earliest adopters of DeFi and is a big supporter of decentralized finance. We are widely known to be one of the largest and most advanced liquidity providers in DeFi. We support all major DEX, trading platforms, AMMs, RFQs, aggregators and we work with most major chains. Wintermute is an official market maker for many of the most prominent blockchain projects and we actively support the DeFi ecosystem: we invest in and help scale early stage DeFi projects, we actively participate in governance of various protocols and cooperate with projects of building the missing pieces of the ecosystem. <b>Working for the DeFi protocol</b>You will have an opportunity to grow professionally and make a direct impact on the business. You will work very closely with our product and engineering teams to improve your knowledge of building high-performance scalable applications and understand broader system architecture.We are looking for a Senior Front-End Engineer who is passionate about building products/applications that people find useful and that help grow the business. You will be responsible for all things Front-end related; this includes developing front end applications for the protocol as well as internal trading applications. A great advantage of this position is that it is varied, and you will have a unique opportunity to shape it, including selecting significant parts of the tech stack.<h3>Hard Skills Requirements</h3><ul><ul><li>Knowledge of front-end tech stack: <a href="http://node.js/" rel="noopener noreferrer nofollow ugc" target="_blank">node.js</a>, npm, javascript, typescript and popular frameworks such as React (please have examples front-ends that you built ready)</li></ul></ul><h3>Nice to have requirements</h3><ul><ul><li>Basic understanding of infrastructure required for frontend/servers:  CDN, Cloudflare or similar, webservers.</li><li>Good understanding of blockchain basics: blocks, accounts, transactions, smart contracts </li><li>Experience with Web3 </li><li>Python knowledge is a strong plus, but not mandatory</li></ul></ul><h3>Application Process</h3><ul><ul><li>1st Stage: Online Coding &amp; Quantitative reasonings tests</li><li>2nd Stage: Technical interview with our Engineer, Designer and Head of Product</li><li>3rd Stage: Take home design task followed by presenting it to one of our Engineers</li><li>4th Stage: Final round with the rest of the team</li></ul></ul>

Job Title	Company Name	Salary	Location	Tags
V Web3 Frontend Engineer - React/TypeScript	VostoEmisio	5k/month	Remote	DEXDeveloperWeb3Remote
Frontend / Blockchain Developer	Mangrove	60k-150k/year	📍 Paris or Remote (Europe)	UI/UXFull TimeFrontendDeFi
Senior QA Engineer	Uniswap Labs		📍 New York, New York, United States	RemoteTradingFull TimeDeveloper
Staff Engineer - React Native and Mobile Native	Kraken Digital Asset Exchange			RemoteTradingSecurityDeveloper
Senior Front-End Engineer	Wintermute		📍 London / Singapore	TradingDeveloperEngineeringWeb3

Web3 DEX React Jobs

Expired DEX React Jobs.

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Web3 Frontend Engineer - React/TypeScript

VostoEmisio

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