{"schemaVersion":"jobsearcher.job.v1","id":"a740f79592d09e8220d81877","url":"https://jobsearcher.com/jobs/a740f79592d09e8220d81877","canonicalUrl":"https://jobsearcher.com/jobs/a740f79592d09e8220d81877","title":"Senior React Native Developer","description":"*Role: React Native Developer*\n\n*Location: Alameda, CA (3–4 days/week onsite)*\n\n*Job Description:*\n\n* 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.\n* Own your areas of the React Native codebase end to end, from architecture and design through implementation, testing, and ongoing maintenance.\n* Write clean, well-tested, performant React Native code that works reliably across a wide range of iOS and Android devices and OS versions.\n* Identify and resolve performance issues across the React Native layer, including JavaScript thread bottlenecks, render\n* optimization, and memory management.\n* 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.\n* 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.\n* Conduct code reviews that raise the quality bar across the mobile team, sharing knowledge and holding a high standard for readability, testability, and maintainability.\n* 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.\n* Contribute to mobile testing practices, including unit, integration, and end-to-end testing across the React Native layer.\n\n*Required Qualification:*\n\n* Bachelor’s degree in computer science, Engineering, or a related technical discipline.\n* 5+ years of professional software engineering experience, with at least 3 years using React Native as a primary technology in a production consumer application.\n* Strong, demonstrable React Native expertise, including component architecture, state management, navigation, performance optimization, and the React Native new architecture (JSI, Fabric, Turbo Modules).\n* 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.\n* Experience working with native modules in a React Native application, including consuming existing native modules and understanding how they bridge to platform capabilities.\n* Solid understanding of mobile application architecture patterns, including state management solutions (Redux, Zustand, or equivalent), navigation libraries, and offline-first design.\n* Experience with mobile performance profiling and optimization at the React Native layer, including identifying and resolving JavaScript thread and render performance issues.\n* Experience writing automated tests for React Native applications, including unit and integration tests and familiarity with end-to-end testing frameworks.\n\n*Preferred Qualifications:*\n\n* Hands-on experience writing native iOS code in Swift or native Android code in Kotlin, beyond reading and debugging into actively building native modules or platform-specific features.\n* Experience in consumer health, digital health, or regulated industries where software quality has direct implications for end users.\n* Familiarity with CGM, biosensor, or IoT data integration in mobile applications, particularly real-time data streams from wearable hardware.\n* Exposure to Bluetooth Low Energy protocols and mobile SDK integration for wearable or connected health devices.\n* Exposure to on-device AI or ML capabilities such as Core ML or TensorFlow Lite integrated within a React Native\n* application.\n* Experience with app store release processes for iOS and Android, including CI/CD pipeline integration for mobile builds.\n* Prior experience at a high-growth consumer technology company or digital health environment.\n\nPay: $70.00 per hour\n\nWork Location: In person","company":"Sigmasoft","rawCompany":"sigmasoft","city":"Alameda","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-08-19T19:26:39.645Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1253.00","title":"Software Quality Assurance Analysts and Testers","slug":"software-quality-assurance-analysts-and-testers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior React Native Developer","description":"*Role: React Native Developer*\n\n*Location: Alameda, CA (3–4 days/week onsite)*\n\n*Job Description:*\n\n* 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.\n* Own your areas of the React Native codebase end to end, from architecture and design through implementation, testing, and ongoing maintenance.\n* Write clean, well-tested, performant React Native code that works reliably across a wide range of iOS and Android devices and OS versions.\n* Identify and resolve performance issues across the React Native layer, including JavaScript thread bottlenecks, render\n* optimization, and memory management.\n* 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.\n* 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.\n* Conduct code reviews that raise the quality bar across the mobile team, sharing knowledge and holding a high standard for readability, testability, and maintainability.\n* 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.\n* Contribute to mobile testing practices, including unit, integration, and end-to-end testing across the React Native layer.\n\n*Required Qualification:*\n\n* Bachelor’s degree in computer science, Engineering, or a related technical discipline.\n* 5+ years of professional software engineering experience, with at least 3 years using React Native as a primary technology in a production consumer application.\n* Strong, demonstrable React Native expertise, including component architecture, state management, navigation, performance optimization, and the React Native new architecture (JSI, Fabric, Turbo Modules).\n* 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.\n* Experience working with native modules in a React Native application, including consuming existing native modules and understanding how they bridge to platform capabilities.\n* Solid understanding of mobile application architecture patterns, including state management solutions (Redux, Zustand, or equivalent), navigation libraries, and offline-first design.\n* Experience with mobile performance profiling and optimization at the React Native layer, including identifying and resolving JavaScript thread and render performance issues.\n* Experience writing automated tests for React Native applications, including unit and integration tests and familiarity with end-to-end testing frameworks.\n\n*Preferred Qualifications:*\n\n* Hands-on experience writing native iOS code in Swift or native Android code in Kotlin, beyond reading and debugging into actively building native modules or platform-specific features.\n* Experience in consumer health, digital health, or regulated industries where software quality has direct implications for end users.\n* Familiarity with CGM, biosensor, or IoT data integration in mobile applications, particularly real-time data streams from wearable hardware.\n* Exposure to Bluetooth Low Energy protocols and mobile SDK integration for wearable or connected health devices.\n* Exposure to on-device AI or ML capabilities such as Core ML or TensorFlow Lite integrated within a React Native\n* application.\n* Experience with app store release processes for iOS and Android, including CI/CD pipeline integration for mobile builds.\n* Prior experience at a high-growth consumer technology company or digital health environment.\n\nPay: $70.00 per hour\n\nWork Location: In person","datePosted":"2026-08-19T19:26:39.645Z","dateModified":"2026-08-19T19:26:39.645Z","hiringOrganization":{"@type":"Organization","name":"Sigmasoft","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Alameda","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"a740f79592d09e8220d81877"},"url":"https://jobsearcher.com/jobs/a740f79592d09e8220d81877"}}