Mobile Engineer - React Native (100% Remote)

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. Built with React Native and Expo, Keet Mobile runs a custom P2P core on the device itself. You'll own features end to end, from UI/UX implementation to integrating the P2P core APIs, and work closely with our core P2P, design, and product teams.

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
• Review code with a high bar for quality and collaborate with core P2P, design, and product teams

What you bring

• Strong experience developing mobile applications with React Native
• Excellent English communication skills

What we offer

• 100% remote work

About Tether

Tether is a fintech leader building reserve-backed tokens and digital asset solutions across blockchains. The company operates Tether Finance, home to USDT, the world's most trusted stablecoin, alongside Tether Power (energy and Bitcoin mining), Tether Data (AI and peer-to-peer technology, including KEET), Tether Education (digital learning), and Tether Evolution (emerging technology initiatives).