Senior React Native Developer (Expo / TypeScript)

About the role Studio W is looking for a Senior React Native Developer to join one of our client teams and build a modern AI-powered mobile app for iOS and Android. You will be employed by Studio W and fully integrated into the client's development team. What you will work on • Build and maintain cross-platform mobile apps with React Native (Expo) and TypeScript • Implement secure Single Sign-On and authentication flows • Integrate real-time features such as voice, streaming and live updates • Build chat-style interfaces and connect them to REST APIs • Design intuitive, touch-first user experiences • Handle file uploads, caching and offline behaviour • Publish and maintain apps on the App Store and Google Play What we're looking for • 4+ years of mobile development, including at least one React Native app published on both stores • Strong TypeScript and React skills; experience with Expo (custom dev builds, native modules) • Experience with OAuth 2.0 / OpenID Connect on mobile • Experience with TanStack React Query and REST APIs • Comfortable explaining and defending your technical choices • Fluent in English (French is an asset) Nice to have • Real-time audio on mobile (WebRTC, WebSockets) • Experience with cloud AI or speech services • NativeWind (Tailwind for React Native) • Experience building AI or chat applications