Mobile Lead Engineer (React Native) - US-based

Our client is looking for a Mobile Lead Engineer for a project focused on a cross‑platform React Native app (iOS and Android) that discovers, pairs with, and controls BLE hardware.

• 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

Must‑haves

• Strong production React Native expe...