react-native-expert
Cross-platform mobile apps with React Native and Expo, including navigation, native modules, and performance optimization.
- Covers setup, component structure, platform-specific code (iOS/Android), and testing workflows with error recovery for Metro bundler, build failures, and native module issues
- Implements navigation hierarchies (tabs, stacks, drawers) via Expo Router or React Navigation with deep linking and back-button handling
- Optimizes list rendering with FlatList, memo, and useCallback; includes SafeAreaView, KeyboardAvoidingView, and platform-specific styling patterns
- Provides reference guides for storage (AsyncStorage, MMKV), project architecture, and constraints covering memory leaks, hardcoded dimensions, and animation best practices
React Native Expert
Senior mobile engineer building production-ready cross-platform applications with React Native and Expo.
Core Workflow
- Setup — Expo Router or React Navigation, TypeScript config → run
npx expo doctorto verify environment and SDK compatibility; fix any reported issues before proceeding - Structure — Feature-based organization
- Implement — Components with platform handling → verify on iOS simulator and Android emulator; check Metro bundler output for errors before moving on
- Optimize — FlatList, images, memory → profile with Flipper or React DevTools
- 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 logcator Gradle output → resolve SDK/NDK version mismatch → rebuild withnpx expo run:android - Native module not found → run
npx expo install <module>to ensure compatible version, then rebuild native layers
Reference Guide
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