Q1. What is the difference between React Native's old bridge architecture and the New Architecture?
Tests currency of knowledge — should mention Fabric, TurboModules, and JSI
Get dedicated React Native developers to build fast, native-quality iOS and Android apps from a single JavaScript/TypeScript codebase — from MVPs to complex, feature-rich mobile products.
Why choose us?
Every developer passes a 5-stage vetting process.
Your developer works exclusively on your product.
Hourly time tracking with daily reports. No hidden fees.
We replace within 48 hours at no extra cost.
Developers overlap 4-8 hours with your working day.
Flexible contracts with no lock-in and no penalties.
React Native is Meta's open-source framework for building native mobile applications using JavaScript, TypeScript, and React. With its New Architecture (Fabric renderer and TurboModules), React Native apps deliver near-native performance while letting teams share a single codebase across iOS and Android.
At ZonSource, our React Native developers build consumer apps, on-demand marketplaces, social platforms, and enterprise mobile tools — all from a shared codebase, connected to REST, GraphQL, and Firebase backends.
Current stack: React Native 0.76+, TypeScript, Redux Toolkit, Expo, Firebase, REST API
Every React Native developer on our bench is evaluated against these core competencies.
Strong grasp of ES6+, async/await, and type-safe component design
Deep understanding of hooks, component lifecycle, and reusable UI patterns
Practical experience with Redux Toolkit, Zustand, or React Query for scalable app state
Ability to bridge React Native with native Android/iOS code when needed
Skilled at connecting apps to REST, GraphQL, and Firebase services
Knowledge of re-render optimization, list virtualization, and memory profiling
Comfortable writing unit tests and end-to-end tests for app reliability
Experience handling app signing, review guidelines, and OTA updates via CodePush
A snapshot of React Native developers available now.
Build cross-platform iOS and Android apps from a single JavaScript/TypeScript codebase
Launch a functional, investor-ready app in weeks instead of months
Build shopping apps with cart, checkout, and payment gateway integration
Rebuild existing native Android or iOS apps as a unified React Native codebase
Move existing Flutter apps to React Native to leverage your team's JavaScript skills
Connect apps to Firebase, REST, GraphQL, and custom backend services
Improve app startup time, frame rates, and memory usage
Ongoing bug fixes, OS version compatibility, and feature updates
ENGAGEMENT MODELS
ZonSource's React Native team took our app idea to the App Store in under eight weeks.
They rebuilt our native app in React Native and our release velocity doubled.
Their developers handled our complex native payment SDK integration without a single hiccup.
Tell us your tech stack, project scope, and team needs
We match you with 2-3 pre-vetted React Native developers
Interview shortlisted developers, assess skills and culture fit
Developer joins your standups, tools, and workflows
If your priority is launching on both iOS and Android quickly, reusing your team's existing React and JavaScript skills, and maintaining a single codebase going forward, a dedicated React Native developer is the right fit. With the New Architecture, React Native apps achieve near-native performance for the vast majority of use cases.
A native developer (Swift/Kotlin) makes more sense if your app depends heavily on cutting-edge platform-specific APIs on day one of release, or extremely performance-sensitive workloads like advanced AR or high-end gaming. Many teams start with React Native for speed and switch specific modules to native code only where genuinely necessary.
Use these questions when evaluating React Native developers — or let us handle the vetting.
Tests currency of knowledge — should mention Fabric, TurboModules, and JSI
Should compare Redux Toolkit, Zustand, or React Query with clear trade-offs
Should mention native modules, TurboModules, and when a bridge is actually necessary
Look for FlatList/FlashList virtualization and re-render minimization techniques
Should reference local storage, sync queues, and conflict resolution strategies
Should describe Jest for unit tests and Detox or Maestro for end-to-end testing
Look for a phased, module-by-module plan rather than a risky full rewrite
Looking for a different skill set? Explore our full bench of pre-vetted developers.