About Our ClientOne of our clients is building the next generation of integral finance. They're creating a mobile-first platform that makes moving, spending, and managing money across borders as simple as using a traditional bank account - while leveraging cutting-edge blockchain technology behind the scenes. Users enjoy a seamless experience without ever needing to understand crypto.The company already serves thousands of customers across 130+ countries and is rapidly expanding its presence in the US market. Having recently secured $5M in seed funding from leading international investors, they're well-funded and entering an exciting growth stage.With a lean, highly technical team, every engineer has a direct impact on both the product and the company's future.About the RoleThis 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 DoingBuild 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.What We're Looking For5+ years of professional software engineering experience.Strong experience building and shipping production React Native applications.Expert-level JavaScript and TypeScr

📌 Senior React Native Engineer (Madrid)
🏢 OnHires
📍 Madrid