Mobile Development

React Native and Expo best practices for building performant mobile apps: list performance, animations, native modules, and platform-specific optimizations.

.NET MAUI development: environment setup, diagnostics, troubleshooting, navigation, data binding, dependency injection, layout, and theming for cross-platform mobile + desktop apps.

Modern SwiftUI best practices including iOS 26+ Liquid Glass adoption and native patterns.

Build native-feeling Expo screens — Apple HIG styling, semantic colors, and native UI patterns.

Deploy Expo apps to production with EAS Build and app store submission workflows.

Safely upgrade Expo SDK versions with migration guidance and breaking change resolution.

React Native performance optimization from Callstack: FPS, TTI, bundle size, memory leaks, re-renders, animations, Hermes tuning, JS thread blocking, bridge overhead, FlashList, and jank debugging. Based on Callstack's Ultimate Guide to React Native Optimization.

Upgrade React Native apps to newer versions: apply rn-diff-purge template diffs, update package.json dependencies, migrate native iOS/Android config, resolve CocoaPods and Gradle changes, and handle breaking API updates. Covers Expo SDK upgrades alongside RN.

Incremental migration strategy to adopt React Native or Expo in existing native iOS/Android apps using @callstack/react-native-brownfield. Covers setup, XCFramework/AAR packaging, and phased integration into host native apps.

Control iOS Simulator for building, testing, and debugging iOS apps programmatically.