Remote React Native Mobile Engineer: Offline-First & P2P

Atomic Hr; La Plata; Remote; ARS 92,241,000 - 153,735,000; Full time

Job summary

Tether is hiring a Mobile Engineer (React Native) to own Keet Mobile end-to-end from initial setup to public release on both iOS and Android. You will work remotely from LATAM, collaborating with backend, design and product teams, and guiding sync, storage and release decisions with a counterpart.

You’ll lead offline-first development, optimize startup time on lower-end devices, and implement tests and CI to ensure stable releases.

Qualifications

• 4+ years building mobile applications, including React Native applications released on both the App Store and Google Play.
• Offline-first architecture with local storage, queued writes, retries and conflict handling.
• Performance tuning on low-end Android devices, measuring startup time and memory impacts.
• Daily use of AI coding tools like Cursor or Claude Code with TypeScript, automated tests and CI.

Responsibilities

• Build and polish features across chat, voice and video calls, media sharing, device pairing and identity backup.
• Integrate native capabilities such as push notifications, camera, biometrics and background tasks on iOS and Android.
• Profile and optimise performance on real devices, including startup time, long chats, media handling and battery usage.
• Write unit and end-to-end tests; keep releases stable through CI and crash reporting.
• Collaborate with core P2P, design and product teams; maintain high code quality.

Skills

React Native

Offline-first

TypeScript

CI/CD

English communication

Remote work experience

AI coding tools

Tools

Cursor

Claude Code

Redux

Expo

Xcode

Android Studio

Job description

Tether is hiring a Mobile Engineer (React Native) to own Keet Mobile end-to-end from initial setup to public release on both iOS and Android. You will work remotely from LATAM, collaborating with backend, design and product teams, and guiding sync, storage and release decisions with a counterpart.

You’ll lead offline-first development, optimize startup time on lower-end devices, and implement tests and CI to ensure stable releases.