React Native Developer Needed for App Store Release Engagement

CoreData Systems

Contract · Remote · Flexible hours

About the role

CoreData Systems is building a seamless integration layer called BillingSync Hub to connect its billing platform, CRM, and internal services. As a React Native Developer you will craft the mobile front‑end that drives real‑time data exchange across these systems, ensuring a fluid user experience for sales and finance teams.

Key responsibilities

• Develop and ship a React Native module that consumes the BillingSync Hub REST APIs using Axios and handles OAuth2 token refresh.
• Implement deep linking and push notification handling for transaction alerts via Firebase Cloud Messaging.
• Set up automated end‑to‑end tests with Detox to validate cross‑platform data sync scenarios.
• Collaborate with backend engineers to define GraphQL queries for CRM data retrieval and integrate them with Redux Toolkit.
• Optimize app bundle size and performance using Hermes engine and code‑splitting techniques.
• Deliver a functional prototype within the two‑week sprint and iterate based on stakeholder feedback.

Must-have skills

• Strong experience building production‑grade React Native apps (iOS & Android).
• Proficiency in JavaScript/TypeScript and modern ES6+ features.
• Hands‑on knowledge of native modules, bridging, and platform‑specific debugging.
• Familiarity with RESTful APIs, OAuth2, and state management (Redux or Context).
• Experience with CI/CD pipelines for mobile (Fastlane, Bitrise).

Nice to have

• Exposure to GraphQL and Apollo Client.
• Understanding of billing systems or CRM integrations.