Senior React Native Developer

Навыки

• Android
• CI/CD
• Отладка и поиск ошибок
• Форензика и реагирование
• iOS
• Jaeger / OpenTelemetry
• Мониторинг и observability

О компании и продукте

• 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/
• 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.

Задачи

• 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

Требования

• 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)
• Demonstrated ownership of edge cases, distributed failure modes, degraded APIs, offline sync, and recovery UX
• Demonstrated ability to lead architecture or technical strategy for a mobile app or major feature
• Maintains high standards for clean code, SOLID principles, maintainability, and documentation

Будет плюсом

• 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
• LOCATION
• Ruby Labs operates within the CET (Central European Time) zone
• This ensures optimal collaboration and communication during working hours

Условия

• Discover the perks of being part of our vibrant team!
• 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, without counting days
• Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge
• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them
• Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities
• Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere
• Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!

Как проходит отбор

• After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received
• If we see a potential fit, we proceed with the following steps
• Recruiter Screening (40 minutes)
• Technical Interview (90 minutes)
• Final Interview (60 minutes)
• LIFE AT RUBY LABS
• At Ruby Labs, we move fast, aim high, and expect the same from our team
• We’re not here to play small—we’re here to build, grow, and win
• That means we look for people who are ambitious, driven, and ready to give their best every single day
• This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle
• If you’re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen
• Here, effort is matched with reward
• We recognize those who go all in and deliver results, and we create space for people who want more—more responsibility, more growth, and more success

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