Cross-Platform Mobile Developer (React Native / Flutter) at Seraphina w.

職位預算: USD 5,000-12,000

發佈時間: 2026-07-06

• React Native
• Flutter
• TypeScript
• Dart
• iOS
• Android
• CI/CD
• Firebase
• Testing

We seek an experienced Cross-Platform Mobile Developer to design, build, and maintain high-performance, scalable iOS and Android apps. This role requires deep technical ownership—extending beyond UI integration to full-stack mobile responsibility: architecture, testing, CI/CD, security, and performance optimization. Key Responsibilities: • Develop and optimize cross-platform apps using React Native (TypeScript, modern Hooks, native module bridging) or Flutter (Dart, custom Widgets, Platform Channels, Riverpod/Bloc) • Implement robust CI/CD pipelines (GitHub Actions / Bitrise / Fastlane) • Write comprehensive unit, component, and integration tests (Jest / Detox / Flutter Test) • Integrate with RESTful and GraphQL backends • Enforce secure coding practices (OAuth2, biometric auth, data encryption) • Conduct performance tuning (memory leaks, jank, cold-start latency) • Collaborate with backend and QA teams on documentation and code reviews Requirements: