Frontend Developer(React Native / Expo)

Descrição da Vaga

Requisitos

• React Native
• Strong experience with React Native
• Building and maintaining cross-platform iOS and Android applications
• Hands-on experience testing and debugging on real devices (not emulator-only)
• Familiarity with Expo Router for file-based routing
• Experience with GraphQL APIs and codegen
• Server state management, caching, and synchronization
• Query invalidation, optimistic updates, pagination, infinite scroll
• Understanding when to use server state vs client state
• Strict mode, no any, no casting to bypass type errors
• Proper typing for props, state, and API responses
• Generic types, discriminated unions, and utility types
• Local state with React Context or Zustand
• Form state with React Hook Form
• Experience with Reanimated for animations
• FlashList for performant lists
• Refactoring existing codebases without breaking functionality
• Firebase Cloud Messaging / push notifications
• App versioning and distribution (App Distribution, Crashlytics)
• Sendbird or similar chat SDK integration
• Experience with payment SDKs like Stripe
• Comfortable navigating third-party SDKs and documentation

Responsabilidades

• This role is initially offered on a contract basis, with the potential for longer-term collaboration or conversion to a full-time role depending on performance, mutual fit, and business needs
• Building and maintaining a cross-platform mobile application using React Native and Expo
• Implementing frontend features based on existing designs and product requirements
• Debugging and testing on real iOS and Android devices
• Improving performance, reliability, and UI consistency across platforms
• Collaborating with backend systems via GraphQL APIs
• Refactoring and improving existing code while preserving functionality
• Supporting ongoing product iterations toward MVP and post-MVP improvements
• Experience with Expo
• Experience with Expo EAS Build and OTA updates
• Understanding of Expo limitations and native module constraints
• Understanding of queries, mutations, and subscriptions
• Caching, pagination, and refetch strategies
• React Patterns
• Component composition over prop drilling
• Custom hooks for logic extraction
• Performance optimization (memo, use
• Memo, useCallback, and when NOT to use them)
• Understanding React’s rendering behavior
• MMKV for fast local storage
• Ability to implement pixel-accurate UIs from Figma
• Understanding of iOS vs Android platform differences
• Async & Error Handling
• Handling loading, error, and empty states
• Network edge cases and offline behavior
• Retry strategies and error boundaries
• Clear code structure (avoiding prop drilling, proper separation of concerns)
• Consistent naming conventions and file organization
• Deliverable and milestone-driven work

Benefícios