React Native Developer for Mobile Offline Sync

LumenWorks

Project-based · Remote · Flexible hours

About the role

LumenWorks is launching a critical integration project linking its billing system, CRM, and internal APIs. We need a React Native Developer to craft a seamless cross‑platform experience that synchronizes data in real time and supports both Android and iOS devices.

Key responsibilities

• Design and implement React Native modules that consume internal REST and GraphQL APIs.
• Build robust data sync layers between billing, CRM, and internal services.
• Collaborate with backend engineers to define contract specifications.
• Write unit and integration tests to ensure reliability across devices.
• Optimize performance and resolve platform‑specific issues.

Must-have skills

• Strong proficiency in React Native and JavaScript.
• Experience delivering production apps on Android and iOS.
• Understanding of API authentication, OAuth, and token refresh flows.
• Ability to work independently in a remote, project‑based setting.

Nice to have

• Familiarity with billing or CRM platforms.
• Exposure to TypeScript and Redux Toolkit.
• Knowledge of CI/CD pipelines for mobile apps.