Senior React Native Developer - Mobile Innovation

About the Role

We are seeking a Senior React Native Developer to join our dynamic team at Ruby Labs. This remote position allows you to work from anywhere within the EMEA region, ensuring you can contribute to our innovative mobile solutions while enjoying a flexible work-life balance. As a Senior React Native Developer, you will play a pivotal role in shaping our mobile applications, ensuring they meet the highest standards of quality and performance.

What You'll Do

• Contribute to the development and delivery of new mobile product features.
• Maintain and improve the existing React Native codebase, focusing on performance and stability.
• Define and evolve mobile architecture, system design, and technical strategy.
• Collaborate with backend, product, and design teams to create scalable solutions.
• Drive reliability, performance, and observability standards in mobile applications.
• 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.

Requirements

• 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, component architecture, state management, navigation patterns, and performance trade-offs.
• Experience optimizing UI performance, memory usage, rendering efficiency, and startup time.
• Deep knowledge of React internals and rendering behavior (hooks, reconciliation, lifecycle, render cost).
• Experience working with native modules and iOS/Android bridging.
• Shipped and maintained apps on the App Store and Google Play.
• Experience with CI/CD, builds, release automation, and OTA updates (EAS, CodePush, or similar).
• Experience implementing monitoring and observability (Sentry, OpenTelemetry, crash reporting, performance tracing).

Nice to Have

• Experience in startup or high-ownership product teams.
• Experience scaling real-time or multi-region mobile architectures.
• Experience designing or building design systems, shared component libraries, or mobile platform foundations.
• Experience improving mobile security, analytics, performance profiling, and release automation.
• Knowledge of edge caching, streaming real-time events, WebSockets, or offline-first architectures.

What We Offer

• Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being.
• Paid National Holidays: Celebrate and relax on national holidays with paid time off.
• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks.
• Flexible Independent Contractor Agreement: Enjoy flexibility, autonomy, and entrepreneurial opportunities.

Join Ruby Labs as a Senior React Native Developer and be part of a team that is driving the future of mobile technology. Apply now for this exciting opportunity!