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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # React Native Engineer - **Company:** Comunidad de Madrid - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Application Programming Interfaces (APIs), Android Software Development, App Store (IOS), Continuous Integration, Software Debugging, Node.Js, Blockchain, Software Engineering, TypeScript, Backend, Solidity, Web3.js, React Native, Api Management - **Published:** July 29, 2026 - **Apply:** https://www.jobleads.com/es/job/e8df51bf1abf05321268b6042f5166227 ## About the Role * 5+ years of professional software engineering experience. * Strong experience building and shipping production React Native applications. * Expert-level JavaScript and TypeScript skills. * A product mindset and passion for delivering exceptional user experiences. * Comfortable working in fast-moving startup environments with high ownership., * Experience building consumer-facing mobile products. * Expo, native modules, App Store releases, or mobile CI/CD. * Backend or full-stack experience (Node.js, APIs). * Web3, blockchain, or Solidity experience (nice to have, not required). * Previous experience at an early-stage startup. * Experience helping define engineering processes and technical standards., This role is perfect for engineers who love ownership, autonomy, and building products from the ground up. You'll thrive if you're someone who enjoys moving fast, wearing multiple hats, and shipping features that users genuinely love. Whether your background is in fintech, consumer apps, or Web3, what matters most is your ability to build great products and your excitement about solving meaningful problems. ## Description This is a true founding engineering opportunity. You'll own major parts of the React Native application-from designing beautiful user interfaces to state management, API integrations, testing, and production releases. While React Native will be your primary focus, you'll work across the stack whenever needed. The team believes in shared ownership, giving everyone the opportunity to contribute wherever they can create the most value. If you love building polished consumer products and enjoy solving complex technical challenges, you'll feel right at home. What You'll Be Doing * Build and own major features of the React Native app end-to-end. * Develop clean, scalable JavaScript and TypeScript code. * Collaborate closely with founders, product, and design teams to bring ideas to life. * Debug and solve complex issues across iOS, Android, APIs, and backend integrations. * Optimize performance, animations, responsiveness, and overall user experience. * Help establish engineering standards, architecture, and development best practices., * Join as one of the company's first founding engineers. * Build a product used by customers in 130+ countries. * Work directly with the founders and influence product direction. * Own features from idea to production. * Create a world-class mobile experience where every interaction matters. * Move fast, make decisions, and see your work shipped quickly. * Help shape the engineering culture from the ground up. ## Related Videos - [Smart Contract fundamentals - My first DApp](https://www.wearedevelopers.com/videos/52-smart-contract-fundamentals-my-first-dapp) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Hands-on React Native: From Zero to Hero](https://www.wearedevelopers.com/videos/277-hands-on-react-native-from-zero-to-hero) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Cross Platform Mobile Development Frameworks to Use in 2025](https://www.wearedevelopers.com/magazine/404-cross-platform-mobile-development-frameworks-to-use-in-2025) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)