Ruby Labs

React Native Developer – Mid–Senior

Ruby Labs

full-time

Posted on:

Location Type: Remote

Location: Serbia

Visit company website

Explore more

✨ AI Apply
Apply

Job Level

Senior

Tech Stack

AndroidAWSiOSJavaScriptNode.jsReactReact NativeRedis

About the role

  • Deliver new mobile product features with strong execution and attention to detail.
  • Maintain and improve the React Native codebase, performance, and stability.
  • Integrate with backend APIs, caching layers, and real-time services.
  • Debug production issues, investigate edge cases, and ship fixes quickly.
  • Implement crash reporting and performance observability (Sentry, tracing, logs, metrics).
  • Optimize app performance across rendering, navigation, memory usage, latency, and offline behavior.
  • Write clean, maintainable code with a strong understanding of software fundamentals.
  • Contribute to technical discussions, planning, documentation, and delivery decisions.
  • Support improvements to builds, releases, testing, and app store deployments.

Requirements

  • 3–5+ years of experience building mobile applications.
  • Strong production experience with React Native.
  • Deep understanding of React fundamentals (hooks, context, component lifecycle, rendering behavior).
  • Experience working with native modules and iOS/Android bridging when needed.
  • Experience shipping and maintaining apps on the App Store and Google Play.
  • Experience with mobile builds, releases, CI/CD, or OTA update flows (EAS, CodePush, or similar).
  • Experience with crash reporting and observability tools (e.g., Sentry, performance tracing, logs).
  • Strong grasp of software development fundamentals and best practices.
  • Ability to debug and fix issues confidently in production.
  • Comfortable owning features or technical components with autonomy.
  • Demonstrates accountability for edge cases, reliability, and user experience.
  • Passionate about building scalable, reliable products that users depend on.
  • Nice to have: Experience improving performance, automating releases, or enhancing mobile reliability at scale. Familiarity with backend services (Node.js, AWS, Redis, Cloudflare) to enable seamless API integration. Experience contributing to or building mobile design systems or shared component libraries. Experience with real-time mobile data flows (WebSockets, streaming, event ingestion).
Benefits
  • 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. Read more about it here: https://docs.google.com/document/d/1tzxGX4Uu7Ts_HCLFXESKLnKaaBfVCPf1f9AYZPrkjJM/preview?tab=t.0

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
React Nativemobile applicationsnative modulesiOSAndroidCI/CDEASCodePushcrash reportingperformance observability
Soft skills
attention to detaildebuggingaccountabilityautonomycommunicationtechnical discussionsplanningdocumentationuser experiencereliability