Senior Mobile Engineer (BLE & Device Connectivity, iOS/Android)

Join Beacon, a mission-driven company focused on improving lives through insights into neurological, psychiatric, and sleep disorders. As a Senior Mobile Engineer, you will lead the development of our native iOS and Android BLE device SDKs, ensuring connection reliability, data throughput, and battery performance. You will work closely with our Devices team and help shape the roadmap and technical direction of our mobile platform.

• Lead the development of native iOS and Android BLE device SDKs, ensuring connection reliability, data throughput, and battery performance.
• Collaborate closely with the Devices team on firmware interfaces, GATT profiles, and device behavior, and expose device capabilities to React Native applications.
• Shape the roadmap and technical direction of the mobile platform, and improve BLE pairing and reconnection reliability across both iOS and Android.

• 8+ years of experience in mobile development, with extensive native experience on iOS (Swift) and/or Android (Kotlin)
• Strong communication skills and comfort working in a collaborative, async environment
• A rigorous approach to reliability: you care about edge cases, device fragmentation, and performance
• Hands-on experience integrating BLE peripheral devices into production mobile apps, including pairing/bonding, reconnection, background operation, and data throughput (e.g., Core Bluetooth, Android BLE APIs)
• Experience with sensor integration or streaming health data from wearables
• Worked on apps for clinical trials, patients, or another regulated environment
• Built production React Native apps, or written native modules for React Native or Expo
• Worked with TypeScript and our broader stack (React Native, Expo, GitHub)
• Worked with medical devices, EEG, or wearables
• Contributed to open source mobile or BLE projects