Senior Mobile Engineer: Offline-First React Native

Ntt Data Europe & Latam; La Pampa; Remote; ARS 63,868,000 - 117,092,000; Full time

Benefits offered by this job

Fully remote contractor role from LATM

US time-zone overlap

Own one app to release

Backend collaboration

AI-assisted coding workflow

Job summary

Ntt Data Europe & Latam is seeking a senior mobile developer to own an offline-first React Native app from setup to launch on App Store and Google Play. You’ll work with a lead and backend developer, review diffs, add tests, and make decisions on sync, storage and releases in a remote LATAM contractor role.

You’ll implement sign-in, data sync, and error handling while optimizing performance for low-end Android devices and ensuring smooth store submissions and monitoring.

Qualifications

• 4+ years building mobile applications.
• React Native apps released on both the App Store and Google Play.
• Offline-first experience with local storage, queued writes and retries.
• Clear written and spoken English for client communications.

Responsibilities

• Set up Apple and Google developer accounts, signing, CI builds and testing tracks.
• Build the local storage, write queue and retry logic for offline use.
• Agree the sync and upload APIs with backend dev; decide conflict resolution.
• Implement phone-number sign-in with SMS codes and push notifications fallback.
• Build camera capture and e-signature flows with versioned records.
• Monitor performance and optimize startup time, memory and app size on low-end devices.

Skills

Mobile development

React Native

TypeScript

CI/CD

AI coding tools

Tools

Cursor AI

Claude Code

CI/CD tools

Job description

Ntt Data Europe & Latam is seeking a senior mobile developer to own an offline-first React Native app from setup to launch on App Store and Google Play. You’ll work with a lead and backend developer, review diffs, add tests, and make decisions on sync, storage and releases in a remote LATAM contractor role.

You’ll implement sign-in, data sync, and error handling while optimizing performance for low-end Android devices and ensuring smooth store submissions and monitoring.