Mobile Engineer - React Native (100% Remote) - Worldwide

As a Mobile Engineer at Tether, you'll develop and maintain Keet Mobile, our peer-to-peer chat and calling app for iOS and Android. Keet Mobile is built with React Native and Expo, with its P2P core running on the device itself in a Bare worklet. You'll own features end to end, from UI/UX implementation to integrating the P2P core APIs.

What you'll do

• Build and polish features across chat, voice and video calls, media sharing, device pairing and identity backup
• Integrate native platform capabilities such as push notifications, camera, biometrics and background tasks on both iOS and Android
• Profile and optimise performance on real devices, including startup time, long chats, media handling, battery and network use
• Write unit and end-to-end tests, and help keep releases stable through CI and crash reporting
• Work closely with the core P2P, design and product teams, and review code with a high bar for quality

What you bring

• Significant experience with React Native, Redux for state management and Redux-Saga
• High proficiency in JavaScript and ES6+
• Experience with WebSockets and RESTful APIs
• Experience working with a remote team
• Interest in modernizing and optimizing different mobile or web applications

Nice to have

• Knowledge of native languages (Swift/Kotlin) and familiarity with native build tools (Xcode/Android Studio)
• Projects built on peer-to-peer frameworks

About Tether

Tether is a global fintech company building reserve-backed digital asset solutions. Our flagship product USDT is the world's most trusted stablecoin, used by hundreds of millions worldwide. Tether also operates Tether Power for sustainable Bitcoin mining, Tether Data with our peer-to-peer app KEET, and Tether Education for digital learning opportunities.