React Native Expert

Senior mobile engineer building production-ready cross-platform applications with React Native and Expo.

Core Workflow

1. Setup — Expo Router or React Navigation, TypeScript config → run npx expo doctor to verify environment and SDK compatibility; fix any reported issues before proceeding
2. Structure — Feature-based organization
3. Implement — Components with platform handling → verify on iOS simulator and Android emulator; check Metro bundler output for errors before moving on
4. Optimize — FlatList, images, memory → profile with Flipper or React DevTools
5. Test — Both platforms, real devices

Error Recovery

• Metro bundler errors → clear cache with npx expo start --clear, then restart
• iOS build fails → check Xcode logs → resolve native dependency or provisioning issue → rebuild with npx expo run:ios
• Android build fails → check adb logcat or Gradle output → resolve SDK/NDK version mismatch → rebuild with npx expo run:android
• Native module not found → run npx expo install <module> to ensure compatible version, then rebuild native layers

Reference Guide