React Native app development services
React Native app development services for cross-platform iOS and Android apps built with Expo or the React Native CLI: banking, shopping, health and consumer apps, native modules in Swift and Kotlin, moves to the New Architecture, over-the-air updates and store releases, and take-overs of existing apps, with dedicated React Native developers for your team or an app delivered end to end.
What we build with React Native
Expo and React Native apps
iOS and Android apps from one TypeScript codebase on current Expo SDK and React Native releases, with Expo Router for navigation, TanStack Query for server data, and platform-specific screens and gestures where users expect them.
React Native banking and payment apps
Biometric and passkey sign-in, cards, transfers and statements, Apple Pay and Google Pay through the Stripe or Adyen React Native SDKs, keys in the iOS Keychain and Android Keystore, certificate pinning, and checks for jailbroken or rooted devices.
Commerce and marketplace apps in React Native
Catalogues, search, carts and checkout, loyalty cards and personalised offers, and deep links from campaigns, over Shopify, commercetools or your own API, with analytics events agreed with marketing before release.
Consumer and health apps in React Native
Feeds, chat, video and audio playback, subscriptions through the stores or RevenueCat, HealthKit and Health Connect data, and Bluetooth Low Energy pairing with wearables, with personal data encrypted on the device.
Native modules in Swift and Kotlin
Turbo Native Modules and Fabric components generated with Codegen, the Expo Modules API or Nitro Modules, for cameras, payment terminals, Bluetooth devices and vendor SDKs that no maintained package covers, tested on real devices.
Moves to the New Architecture
Apps still on the old bridge brought to the New Architecture, the only one React Native runs on from 0.82 onwards: unsupported libraries replaced or forked, native modules rewritten as Turbo Modules, and each React Native upgrade released on its own.
Over-the-air updates
JavaScript fixes and content changes shipped through EAS Update or a self-hosted CodePush server, with rollouts by channel and percentage and a rollback ready, while anything that changes native code or what the app does goes through store review.
Signed builds and staged rollouts
Signed builds for both stores from EAS Build, GitHub Actions or fastlane, TestFlight and Google Play testing tracks, staged rollouts, and crashes and slow screens watched in Sentry or Crashlytics.
Inherited React Native apps
React Native apps whose original developers have gone, starting with a read-only review of the code, the dependencies and the release setup, then upgrades to current React Native with abandoned packages replaced.
Hire React Native developers
Dedicated React Native developers
React Native developers who join your team full time, work in your repositories, tracker and meetings, and report to your lead. You interview them; we carry the Ukrainian contract, payroll, invoicing and leave.
React Native project delivery
A team that takes the React Native project from scope to release: estimate, build, tests and deployment, with a technical lead on our side who owns the plan and the quality.
React Native support and take-overs
An existing React Native system taken over from another team or kept running: a read-only review and a written list of risks first, then fixes and new features in order of impact.
The dedicated team page explains how specialists join your team, and the outsourcing page covers project delivery, take-overs and how we charge.
Who works on your React Native project
React Native developers
TypeScript, Expo and the React Native CLI
iOS and Android engineers
Native modules in Swift and Kotlin
Backend engineers
The API, push notifications and sign-in
UI and UX designers
Figma designs for both platforms
QA engineers
Device testing and Maestro or Detox automation
How we work on React Native
TypeScript in strict mode on the New Architecture and Hermes, component tests with React Native Testing Library and end-to-end flows in Maestro or Detox on real iOS and Android devices, performance profiled on low-end phones rather than in the simulator, and no API keys or other secrets shipped inside the app bundle.
Developers work in your repositories, your tracker and your process. The Ukrainian contract, payroll, invoicing and leave stay with us, and everything they write is assigned to you.
Other frameworks we work in
Laravel development
Laravel development services: web applications and APIs, online shops and marketplaces, SaaS products, payment back offices, admin panels and Laravel upgrades, with dedicated Laravel developers or project delivery.
Django and FastAPI development
Django and FastAPI development services: web applications, REST APIs, AI and LLM back ends, data pipelines, fintech and e-commerce platforms and Django upgrades, with dedicated developers or project delivery.
Next.js development
Next.js development services: web applications, SaaS front ends, e-commerce storefronts, marketing sites, AI product interfaces and migrations to the App Router, with dedicated Next.js developers or project delivery.
Vue.js and Nuxt development
Vue.js and Nuxt development services: Vue 3 applications, Nuxt sites, storefronts, SaaS dashboards, front ends for Laravel and other backends, and Vue 2 migrations, with dedicated Vue.js developers or project delivery.
Ruby on Rails development
Ruby on Rails development services: web applications, SaaS products, shops and marketplaces, APIs, Hotwire Native apps, and upgrades and take-overs of Rails codebases, with dedicated Rails developers or project delivery.
Flutter app development
Flutter app development services: cross-platform iOS and Android apps for fintech, health, media and retail, Flutter for web and desktop, backends and take-overs, with dedicated Flutter developers or project delivery.
Symfony development
Symfony development services: web applications, APIs on API Platform, SaaS and enterprise systems, Sylius and Shopware shops, Drupal modules and Symfony upgrades, with dedicated Symfony developers or project delivery.
Spring Boot development
Spring Boot development services: microservices and APIs, Spring Cloud, Spring Security and single sign-on, Spring Batch, Spring AI and Spring Boot 4 upgrades, with dedicated Spring Boot developers or project delivery.
Electron app development
Electron app development services: desktop apps for Windows, macOS and Linux, auto-update, code signing and notarisation, native modules, upgrades and migrations, with dedicated Electron developers or project delivery.
Questions about React Native development
Which industries do your React Native developers work in?
Fintech most of all: banking, payment, investment and insurance apps. Then e-commerce and retail, with shopping, delivery and loyalty apps; media and consumer apps, with social, streaming and dating apps; healthcare and fitness, with telemedicine, wellbeing and workout apps; education, with learning apps; and logistics, with driver and field-service apps.
Do you have React Native engineers on the team?
Yes. React Native engineers work beside our iOS and .NET MAUI engineers, under the same rules: tests with every feature, current dependencies and no secrets in the app bundle.
Expo or the React Native CLI?
Expo for most new apps, since the React Native team itself recommends a framework for new projects, with native code added through config plugins and development builds. The React Native CLI for existing apps already set up that way, and for React Native screens added inside an existing native iOS or Android app.
Can the app share code with our React web app?
Yes. Types, API clients, validation and state logic sit in a shared package in one repository, and screens can be shared too through React Native Web or Expo Router’s web output where the design allows.
How quickly can React Native developers start?
When the right React Native developer is available, the start is gated only by your interview and the NDA and IP assignment. Otherwise we run a search, which typically produces candidate profiles within two to three weeks, and nobody starts until you have said yes.
How do we hire React Native developers through BigTree108?
Tell us the work, the seniority and the hours you need. We propose one or two people with their profiles, you interview them the way you would interview your own hire, and you sign one agreement with BIG TREE 108 LLC and receive one invoice a month.
Who owns the work they produce?
You do. Every specialist has a signed contract with BigTree108 that assigns all work product to the company, and our agreement with you assigns it onward. Code, designs and documents are delivered into your own repositories and tools, not kept where only we can change them.
Building a React Native app?
Tell us what the app does, who uses it and, if it exists, the React Native version it runs on. You get an answer within one business day: a plan, candidate profiles, or a review of the existing app.