Role: React Native Developer
Location: Alameda, CA (3–4 days/week onsite)
Required Candidates With HealthCare domain Experience.
Job Description:
- Build and maintain consumer mobile features across iOS and Android using React Native, including CGM data visualization, AI-powered food logging, personalized metabolic insights, and AI health assistant experiences.
- Own your areas of the React Native codebase end to end, from architecture and design through implementation, testing, and ongoing maintenance.
- Write clean, well-tested, performant React Native code that works reliably across a wide range of iOS and Android devices and OS versions.
- Identify and resolve performance issues across the React Native layer, including JavaScript thread bottlenecks, render
- optimization, and memory management.
- Work with native modules and understand how React Native bridges to iOS and Android platform capabilities, including integrations with CGM hardware SDKs and Bluetooth data streams.
- Participate in Lingo's ongoing migration from React Native toward native iOS and Android where appropriate, contributing your perspective on what should migrate and how.
- Conduct code reviews that raise the quality bar across the mobile team, sharing knowledge and holding a high standard for readability, testability, and maintainability.
- Partner with Product and Design to translate requirements into well-scoped, high-quality engineering solutions and push back constructively when scope or approach creates unnecessary complexity.
- Contribute to mobile testing practices, including unit, integration, and end-to-end testing across the React Native layer.
Required Qualification:
- Bachelor’s degree in computer science, Engineering, or a related technical discipline.
- 5+ years of professional software engineering experience, with at least 3 years using React Native as a primary technology in a production consumer application.
- Strong, demonstrable React Native expertise, including component architecture, state management, navigation, performance optimization, and the React Native new architecture (JSI, Fabric, Turbo Modules).
- Working knowledge of iOS and/or Android platform fundamentals, sufficient to understand how React Native interacts with the native layer, read and interpret native code when debugging, and make informed decisions about native module usage.
- Experience working with native modules in a React Native application, including consuming existing native modules and understanding how they bridge to platform capabilities.
- Solid understanding of mobile application architecture patterns, including state management solutions (Redux, Zustand, or equivalent), navigation libraries, and offline-first design.
- Experience with mobile performance profiling and optimization at the React Native layer, including identifying and resolving JavaScript thread and render performance issues.
- Experience writing automated tests for React Native applications, including unit and integration tests and familiarity with end-to-end testing frameworks.
Pay: $60.00 - $61.00 per hour
Work Location: In person
