Senior Mobile App Engineer

Responsibilities

• Lead development of React Native mobile applications across iOS and Android.
• Design and implement UX workflows for clinical trial participants and at-home diagnostic patients.
• Own application user experience, performance, reliability, and observability using feedback from real users.
• Integrate capabilities from native iOS and Android BLE device SDKs.
• Partner with Devices, Platform, and Product Design teams to build integrated mobile capabilities.
• Shape the roadmap and technical direction of the mobile platform.
• Build EEG signal-quality validation, patient onboarding, compliance-tracking, performance, release-reliability, and crash-visibility features.

Requirements

• 8+ years of mobile development experience, including substantial experience shipping and maintaining production React Native apps on both iOS and Android.
• Strong TypeScript skills and familiarity with React Native, Expo, and GitHub.
• Experience with app state management, offline-first data handling, and app store release processes.
• Strong product mindset with attention to UX, edge cases, and performance.
• Strong communication skills and comfort working in a collaborative asynchronous environment.
• Experience integrating BLE peripheral devices, sensor integration, or health-data streams is preferred.
• Experience writing native Swift or Kotlin code or building native React Native modules is preferred.
• Experience with medical devices, EEG, wearables, clinical trials, patients, regulated environments, or open-source mobile projects is preferred.

Benefits

• Remote work with asynchronous work practices; candidates may be based in the US Eastern time zone.
• In-person office hubs are available in Boston and New York.
• Total compensation includes equity, PTO, and other benefits.