Remote React Native Mobile Engineer — Offline-First

Sezzle; Municipio de Rincón de los Sauces; Remote; ARS 130,675,000 - 207,542,000; Full time

Job summary

Tether is hiring a Remote Mobile Engineer to build Keet Mobile using React Native and Expo. You will own features end to end on iOS and Android, collaborating with design and backend teams in a globally distributed studio.

You’ll optimize performance, implement native integrations, and maintain robust test and CI processes. The role offers fully remote work worldwide, with a focus on quality and rapid iteration.

Qualifications

• 4+ years building mobile applications, including React Native apps released on App Store and Google Play.
• Offline-first work: local storage, queued writes, retries and conflict handling.
• Performance tuning on low-end Android devices.
• Daily use of AI coding tools (Cursor/Claude Code) with TypeScript, automated tests and CI.
• Clear written and spoken English for client communications and risk notes.
• Experience working from written acceptance criteria and client feedback.

Responsibilities

• Develop and maintain Keet Mobile for iOS and Android using React Native and Expo, owning features end to end.
• Implement chat, voice and video calls, media sharing, device pairing and identity backup.
• Integrate native capabilities (push, camera, biometrics, background tasks) on iOS and Android.
• Profile and optimise startup time, memory usage and battery life on devices.
• Write unit and end-to-end tests; support releases via CI and crash reporting.
• Collaborate with P2P, design and product teams; maintain high code quality.

Skills

React Native

Redux

Redux-Saga

Expo

WebSockets

RESTful APIs

Swift

Kotlin

CI/CD

English communication

Tools

Xcode

Android Studio

Git

Cursor

Claude Code

Job description

Tether is hiring a Remote Mobile Engineer to build Keet Mobile using React Native and Expo. You will own features end to end on iOS and Android, collaborating with design and backend teams in a globally distributed studio.

You’ll optimize performance, implement native integrations, and maintain robust test and CI processes. The role offers fully remote work worldwide, with a focus on quality and rapid iteration.