Ryz Labs/Hire/MobileHire senior React Native developers for iOS and Android
Senior React Native engineers who ship one codebase to iOS and Android, write native modules when needed, and work inside your team on US hours.
By the Ryz Labs team · Updated October 2026
Hiring React Native developers through Ryz gets you senior engineers who ship one TypeScript codebase to both app stores and know when to drop into Swift or Kotlin. They are in the top 1% of the engineers we interview, they join your team's standups and pull requests from the first week, and they work within ±1h of US time zones.
What our React Native developers work on
Our React Native engineers usually join product teams that want web-like iteration speed on mobile without giving up native feel. The work spans greenfield Expo apps, large brownfield apps where React Native lives inside an existing native shell, and upgrades that have been put off for too long.
- New Architecture upgrades: moving apps to Fabric, TurboModules and the bridgeless runtime, and auditing third-party libraries for compatibility.
- Expo apps at scale: Expo Router, config plugins, EAS Build and EAS Update for over-the-air fixes within store policy.
- Brownfield integration: embedding React Native screens into existing Swift and Kotlin apps and sharing navigation and auth state.
- Native modules: writing Swift and Kotlin modules for Bluetooth, camera, payments SDKs or background location when no library fits.
- Performance: list rendering with FlashList, animations with Reanimated and gestures that stay at 60fps on mid-range Android phones.
- Shared code with web: monorepos with shared TypeScript types, API clients and design tokens between React web and React Native.
Skills we vet for
- TypeScript and React: hooks, memoization, context boundaries and strict typing across navigation params and API responses.
- React Native internals: the JS thread versus the UI thread, Hermes, JSI, and what the New Architecture changed about rendering.
- Navigation: React Navigation or Expo Router, deep links, universal links and auth-gated stacks.
- State and data: TanStack Query, Redux Toolkit or Zustand, with offline caching through MMKV or SQLite.
- Native fluency: enough Swift, Kotlin, Xcode and Gradle to debug a native crash or build failure without waiting on someone else.
- Animation: Reanimated worklets, Gesture Handler and layout animations that do not block the JS thread.
- Testing: Jest, React Native Testing Library, and end-to-end tests with Detox or Maestro.
- Release pipeline: EAS or Fastlane, code signing, TestFlight, Play tracks and over-the-air update strategy.
How we vet React Native developers
Our recruiters source React Native engineers across Latin America, and our in-house ARC system ranks that pipeline so the strongest candidates move first. Each candidate goes through a structured NTRVSTA AI interview focused on mobile problems, not trivia. Recruiters review candidates before and after the interview and build a curated shortlist for you. AI scores are advisory. Our recruiters and your team make the decisions.
Sample interview topics
- A product list drops frames on a low-end Android device. Walk through how you profile it, and when you would move from FlatList to FlashList or change the item component.
- Explain what the New Architecture changes about how JavaScript talks to native code, and how you would check whether a library is ready for it.
- You need background location tracking that survives the app being killed. What can React Native do here, and what must be written natively per platform?
- How do you decide what is safe to ship through an over-the-air update versus a full store release?
- Design the auth flow for an app with deep links into protected screens, token refresh and a logged-out state that clears cached data.
Ways to hire React Native developers
| Option | Best for | Trade-offs |
|---|
| Freelance marketplace | An MVP, a small feature or a short contract. | Many profiles are React web developers new to mobile. Native debugging skills are hard to verify. |
| Staffing or recruiting agency | Filling a defined role when you have your own technical screen. | Vetting depth varies. You may still spend senior engineer time filtering candidates. |
| In-house recruiting | Long-term mobile hires tied to your company brand. | Long cycles. Candidates who are strong in both React and native platforms are scarce. |
| Ryz Labs staff augmentation | Adding senior React Native engineers to an existing product team. | Custom quote, scoped per team. You need to be ready to onboard them into your repos and rituals. |
| Ryz Labs dedicated team | Building or rebuilding an app with React Native, native, QA and design people together. | Needs scoping up front. Suited to multi-month work rather than a quick fix. |
If you want to try someone for a few hours on a self-serve platform before talking to anyone, or you want published pricing up front, a freelance marketplace is a better starting point than Ryz.
Why hire React Native developers from Latin America
Latin America has a deep pool of JavaScript and TypeScript engineers, and many moved into React Native as startups across the region adopted it to serve iOS and Android with one team. The senior people we place have usually shipped apps with real users, real store reviews and real crash dashboards.
Cross-platform work involves a lot of coordination: design reviews, QA on two platforms, and release decisions with product managers. Working within an hour of your team's clock means those conversations happen live instead of across a day of lag. Our engineers write and speak clear English and are comfortable with written specs and async code review.
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FAQ
Should we choose React Native or fully native apps?
React Native fits well when your team already works in React and your app is mostly screens, forms, lists and API calls. Heavy graphics, deep OS integrations or strict performance needs can favor native. Our engineers can help you weigh that for your product before you commit.
Do your React Native developers use Expo?
Many do. Expo with development builds and config plugins now covers most production needs. Our engineers also work in bare React Native projects and brownfield apps where Expo is not an option.
What does it cost?
Every engagement gets a custom quote, scoped per team. You see a plan, a price and the names of the engineers before you sign.
Who do we contract with, and will they overlap with our hours?
You sign one contract with Ryz. Our engineers work with us as independent contractors, and we handle paying them. They work within ±1h of US time zones, including New York hours.
Can they write native modules?
Yes. We vet for working knowledge of Swift and Kotlin, so our React Native engineers can build or patch native modules, fix Xcode and Gradle build issues, and read native crash reports.
Questions we didn't answer? Email info@ryzlabs.com.