Build and integrate native iOS and Android modules using Swift, Objective-C, Kotlin, Java, Native Module API, JSI, Turbo Modules, and platform APIs such as biometrics, push notifications, NFC, secure storage, camera, deep linking, and device services. The role requires hands-on architecture ownership, strong React Native and TypeScript expertise, native iOS/Android integration experience, secure mobile application design, CI/CD automation, testing strategy, and technical leadership across distributed Agile teams.