[Remote] Mobile Lead Engineer (React Native) - US-based
Note: The job is a remote job and is open to candidates in USA. Curotec is seeking a Mobile Lead Engineer to work on a cross-platform React Native app that interacts with BLE hardware. The role involves integrating native modules, managing cross-platform BLE identifiers, and ensuring secure credential storage and real-time device status updates.
Responsibilities
- Native module integration: wiring a vendor-supplied Bluetooth SDK into React Native and handling the bridge cleanly
- Cross-platform BLE identifier handling, where iOS exposes a per-pairing UUID and Android exposes the MAC address directly
- Lock and unlock flows with hard timing constraints (sub-second response, short connection and validation windows)
- Over-the-air firmware updates to connected devices
- Offline-first behavior: a pending-action queue that syncs when the device reconnects
- Secure credential storage (iOS Keychain, Android Keystore), biometric auth, NFC, and QR-based device registration
- Real-time device status: battery, firmware version, connectivity state
Skills
- Strong production React Native experience, with apps you've shipped to the App Store and Google Play
- Comfort writing or integrating native modules (Swift/Kotlin) when the JavaScript layer isn't enough
- Solid grasp of mobile state management, async flows, and the realities of debugging on physical devices rather than simulators
- The instinct to handle edge cases and failure states up front, not after QA finds them
- Fluent English and availability during US Eastern business hours
- Bluetooth Low Energy (BLE) experience. Direct, hands-on work with BLE in a mobile app. If you've fought with connection timeouts, GATT services, pairing quirks, or platform identifier differences, say so
- IoT apps in your portfolio. Apps that control or communicate with physical hardware. Tell us what the device was and what your app did with it
- B2B / enterprise app experience over consumer apps. We'd rather see a multi-tenant admin tool, a field-operations app, or a hardware companion app than a high-polish consumer social app. The user base here is organizations and operators, not the mass market
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