Senior React Native Engineer (m/f/x) - based in Germany

5+ years of professional software engineering experience, with at least 3 years focused on React Native and shipping production apps. Expert with React Native and TypeScript, React Navigation, state management, and testing (Jest, React Native Testing Library; Detox a plus). Proven track record delivering to App Store and Google Play, including handling certificates/provisioning, in-app updates, and staged rollouts. Solid understanding of mobile security and privacy: secure storage, keychain/keystore, certificate pinning, data minimization, and PII handling. Experience with mobile CI/CD and release automation (Fastlane, GitHub Actions or Bitrise), and tools like Sentry. Product mindset: worked in product-centric teams, collaborated closely with non-technical stakeholders, and care deeply about UX and accessibility. Experience in regulated industries, healthcare, or other security-conscious environments (bonus). Native iOS/Android development (Swift/Kotlin) (bonus).

Design, build, and ship high-quality React Native apps for iOS and Android with TypeScript. Own the full mobile lifecycle: architecture, implementation, automated testing, release management, monitoring, and iteration. Integrate native capabilities (push notifications, deep links, biometric auth, camera/sensors); write and maintain native modules when needed (Swift/Kotlin). Drive mobile performance and reliability (startup time, bundle size, memory, battery) and meet accessibility best practices. Set up and evolve mobile CI/CD (e.g., Fastlane, GitHub Actions/Bitrise), internal testing (TestFlight/Play Console), and release pipelines. Collaborate closely with Product, Design, and Medical to explore, define, and deliver patient-centric features, and to improve our current platform. Uphold technical excellence in architecture, code quality, and security, especially under healthcare regulations (ISO 62304, TR-03161, MDR). Contribute to a platform that powers multiple regulated digital health products across indications like IBS, GERD, and upcoming expansions. Mentor other developers and help raise the technical bar across the team.