**At Cocos, we believe investing is easy and for everyone!** That’s why we’ve developed a 100% digital, simple, and secure platform already used by over 1 million people. Our mission is to transform the financial system and democratize access to capital markets with innovative and personalized solutions, integrating all financial products into a single app. We have an amazing team made up of the best professionals in each area, always putting the user at the center of everything we do. We have an opportunity for you: we are looking for a **Senior** **React Native Developer** to join our **IT** team. You will be a key player on our team; the role’s objective is to contribute to the development team’s success by designing, implementing, and maintaining high-quality software solutions that meet performance and scalability standards within a continuously learning and collaborative team environment. You will work collaboratively with a large IT team, contributing to strengthening security across all aspects of our applications’ development. This is a **hybrid** position; our offices are located in Florida, Vicente López. **What will you do on a day-to-day basis?** * Design, develop, and maintain high-quality software solutions. * Collaborate closely with the team to implement and maintain our applications. * Optimize applications to ensure optimal performance and scalability. * Proactively identify and resolve technical issues, providing effective and timely solutions. * Provide technical guidance in your area of expertise, encouraging knowledge sharing and continuous team development. * Maintain constant and fluid communication with the design team for solution implementation. **What do we expect from you?** * 5+ years of experience developing mobile applications. * Solid knowledge of TypeScript. * Advanced proficiency in React Native (core features, lifecycle, performance). * Solid knowledge of HTML and CSS. * Experience managing local and global state (e.g., Zustand, Redux, Jotai, etc.). **What would be a plus?** * Experience with **Expo** (EAS / custom dev clients). * Knowledge of React\-Query. * Participation in a migration from React to React Native is a plus. * Knowledge of Node.js. * Experience implementing Unit Testing (Jest, Mocha, etc.). * Familiarity with CI/CD processes (GitHub Actions, EAS, etc.). * Experience with advanced authentication (OAuth, biometrics, WebAuthn). **What’s it like to work at Cocos?** * We’re a fintech that doesn’t believe in limits—we set challenging goals and constantly strive to surpass ourselves. * We learn on the move: we’re curious, agile, and love experimenting and improving. * We value every voice and idea, believing there’s always something new to learn. * We have a talented, friendly, and motivated team eager to build transformative things. * We foster a culture where financial education, innovation, and collaboration sit at the heart of everything we do. * And we don’t just aim to grow as a company—we also aim to help the people on our team grow.