Senior Mobile App Engineer (React Native/iOS/Android)

Beacon Biosignals is transforming precision medicine for the brain through at-home EEG and cardiopulmonary monitoring platforms for clinical development, diagnostics, and care. The Senior Mobile App Engineer will build and improve cross-platform React Native applications and native iOS and Android BLE device SDKs, focusing on reliable data capture, patient and clinician experiences, and integration with wearable devices.

Responsibilities:

• Develop our React Native mobile applications and our native iOS and Android BLE device SDKs
• Design and implement UX workflows for clinical trial participants and at-home diagnostic patients
• Own the user experience, app performance, reliability, and observability of the apps and features you develop, leveraging feedback from real users in a diverse set of use cases and environments
• Partner with our Devices team, other Platform teams, and product designers to develop user-centric mobile app capabilities that are deeply integrated with the rest of Beacon’s product ecosystem
• Help shape the roadmap and technical direction of our mobile platform
• Build a new in-app feature to validate EEG signal quality before data capture
• Improve BLE pairing and reconnection reliability across both iOS and Android
• Streamline onboarding for new patients and trial participants to help make our devices easier to use than ever
• Deploy new features to help our Clinical Operations team track compliance

Requirements:

• • 8+ years of experience in mobile development (native iOS/Android and/or React Native)
• • Experience working with BLE, sensor integration, or health data streams
• • A product mindset — you care deeply about UX, edge cases, and performance
• • Familiarity with our tech stack (TypeScript, React Native, Swift, Kotlin, Expo, GitHub)
• • Strong communication skills and comfort working in a collaborative, async environment
• • Worked with medical devices, EEG, or wearables
• • Integrated BLE peripheral devices into iOS and/or Android applications
• • Written native code extensively for either iOS or Android, in addition to React Native
• • Worked on apps for clinical trials, patients, or in some other regulated environment
• • Contributed to open source mobile or BLE projects