React Native Developer - R01568258

United States·AlamedaThird Party Contractmid

EngineeringMobile Developer

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Requirements Summary

Bachelor’s degree in computer science, Engineering, or a related technical discipline. 5+ years of professional software engineering experience,

Technical Tools

EngineeringMobile Developer

About Brillio:

Brillio is one of the fastest growing digital technology service providers and a partner of choice for many Fortune 1000 companies seeking to turn disruption into a competitive advantage through innovative digital adoption. Brillio, renowned for its world-class professionals, referred to as "Brillians", distinguishes itself through their capacity to seamlessly integrate cutting-edge digital and design thinking skills with an unwavering dedication to client satisfaction.

Brillio takes pride in its status as an employer of choice, consistently attracting the most exceptional and talented individuals due to its unwavering emphasis on contemporary, groundbreaking technologies, and exclusive digital projects. Brillio's relentless commitment to providing an exceptional experience to its Brillians and nurturing their full potential consistently garners them the Great Place to Work® certification year after year.

Role: React Native Developer

Location: Onsite (Alameda, CA) 4 days a week.

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.

Preferred Qualifications:

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.
Experience in consumer health, digital health, or regulated industries where software quality has direct implications for end users.
Familiarity with CGM, biosensor, or IoT data integration in mobile applications, particularly real-time data streams from wearable hardware.
Exposure to Bluetooth Low Energy protocols and mobile SDK integration for wearable or connected health devices.
Exposure to on-device AI or ML capabilities such as Core ML or TensorFlow Lite integrated within a React Native
application.
Experience with app store release processes for iOS and Android, including CI/CD pipeline integration for mobile builds.
Prior experience at a high-growth consumer technology company or digital health environment.

Equal Employment Opportunity Declaration

Brillio is an equal opportunity employer to all, regardless of age, ancestry, colour, disability (mental and physical), exercising the right to family care and medical leave, gender, gender expression, gender identity, genetic information, marital status, medical condition, military or veteran status, national origin, political affiliation, race, religious creed, sex (includes pregnancy, childbirth, breastfeeding, and related medical conditions), and sexual orientation.

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