Senior Mobile AI Developer (Flutter / React Native)

We are looking for an experienced, high-velocity Full-Stack Mobile Developer to build the MVP of an innovative, next-generation AI-powered health and fitness application. You will lead the end-to-end development of a cross-platform mobile app that transforms how users track performance, interact with biometric data, and receive automated personal coaching. The core app architecture relies on lightweight on-device client inputs paired with high-performance, asynchronous server-side AI processing. If you are a master of using AI-assisted coding tools (like Cursor / Replit Agent) to build production-ready applications at 3x speed, we want to hear from you. Responsibilities: - Build a responsive, premium cross-platform mobile app (iOS & Android) using a single unified codebase. - Implement custom, highly tactile UI components (hybrid numeric fields, custom input sliders, and asynchronous state loaders) that provide an elite user experience. - Develop a seamless, optimized video and media pipeline (handling on-device background compression, chunk-sized uploads, and rendering server-returned video loops). - Integrate third-party RESTful APIs and cloud LLM architectures (specifically Google Gemini / OpenAI multimodal endpoints). - Set up a lightweight, highly secure backend database structure (e.g., Firebase, Supabase, or AWS) with strict data-retention lifecycle logic. - Manage app deployment, automated testing configurations, and submission to the Apple App Store and Google Play Store.