Senior React Native Engineer — Remote, Offline-First Mobile

Encora Inc.; La Pampa; Remote; ARS 127,071,000 - 190,607,000; Full time

Benefits offered by this job

Fully remote from LATAM

Core US-time zone hours

Job summary

Tether is hiring a Mobile Engineer React Native to own Keet Mobile end-to-end for iOS and Android, built with React Native and Expo. You’ll drive frontend features, P2P integration, and offline-first design, with CI/testing in place and a strong emphasis on code quality and collaboration with backend peers.

Responsibilities include building chat and calls features, push notifications, and performance optimizations across devices, while maintaining robust tests and monitoring.

Qualifications

• 4+ years building mobile applications, including React Native applications released on both the App Store and Google Play
• Offline-first experience with local storage, queued writes, retries and conflict handling
• Performance tuning on mobile apps, especially on low-end devices
• Experience using AI coding tools like Cursor or Claude Code in production
• Clear written and spoken English for PR descriptions, risk notes and client explanations
• Experience with acceptance criteria-driven development and peer review processes

Responsibilities

• Develop and maintain Keet Mobile (iOS/Android) from UI to P2P integration
• Own features end-to-end, from UI/UX to P2P core API usage
• Write unit and end-to-end tests and maintain CI stability
• Optimize startup time, memory usage and battery impact on real devices
• Collaborate with P2P core, design and product teams, review code with high quality standards

Skills

React Native

Redux

TypeScript

Automated tests

CI/CD

WebSockets

Performance tuning

Tools

Redux-Saga

REST APIs

Xcode

Android Studio

Job description

Tether is hiring a Mobile Engineer React Native to own Keet Mobile end-to-end for iOS and Android, built with React Native and Expo. You’ll drive frontend features, P2P integration, and offline-first design, with CI/testing in place and a strong emphasis on code quality and collaboration with backend peers.

Responsibilities include building chat and calls features, push notifications, and performance optimizations across devices, while maintaining robust tests and monitoring.