Build and optimize high-performance React Native applications across Android and iOS. Improve startup time, rendering, responsiveness, memory usage, battery efficiency, and offline-first workflows. Develop native integrations and system bridges, conduct device-level testing and profiling, troubleshoot performance issues, and collaborate on scalable architecture and reliable production delivery.

Define product decisions, elicit and clarify stakeholder requirements, own epics and user stories, document complex business rules and edge cases, write comprehensive acceptance criteria, and collaborate daily with engineering, QA, and product leadership. Diagnose underlying problems behind feature requests, maintain logic through delivery, and make backlog and implementation decisions in an ambiguous, high-velocity startup environment.