Senior React Native Developer

About us Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/ About the role At RubyLabs we’re looking for a Senior React Native Developer to join our growing engineering team and help lead our expansion into mobile. This is a role for someone who cares deeply about product quality, enjoys solving architectural challenges, and wants ownership over real features that users rely on. You’ll play a key role in building and scaling our mobile applications, shaping the future of our mobile offering, and collaborating closely with backend and product teams to deliver a seamless, reliable, and high-performance user experience. Key Responsibilities Contribute to the development and delivery of new mobile product features. Maintain and improve the existing React Native codebase, performance, and stability. Define and evolve mobile architecture, system design, and technical strategy. Partner with backend, product, and design teams to shape solutions that scale. Drive reliability, performance, and observability standards on mobile. Own production debugging, incident investigation, and root cause analysis. Guide improvements in build systems, CI/CD, releases, testing, and app store deployments. Support hiring and help grow a world-class mobile engineering team. Champion performance across rendering, navigation, latency, memory, offline behavior, caching, and real-time experiences. Qualifications 5+ years of experience building mobile applications, with significant React Native experience. Experience mentoring engineers through code reviews, architecture, and incident response is a strong plus. Strong understanding of mobile system design , componen