Flutter App Developer -- AI Fitness & Wearable Integration

Develop and maintain the FitRx app for iOS and Android using Flutter, including AI coaching, fitness tracking, and wearable integrations. The role also includes the watch-side functionality required to capture and transmit live heart-rate data from supported Apple Watch and Wear OS devices., * Build mobile features for user profiles, workouts, activity history, calendars, and nutrition guidance.

• Integrate APIs, authentication, membership access, and data synchronization.
• Develop AI coaching interfaces with conversational interactions and streaming responses.
• Integrate Apple HealthKit and Android Health Connect for health and fitness records.
• Develop watchOS and Wear OS components for live heart-rate collection and watch-to-phone communication.
• Handle interrupted workouts, device disconnections, delayed readings, and reconnection.
• Manage mobile testing, performance optimization, and App Store and Google Play releases.

• Strong Flutter and Dart skills, with production apps released on both iOS and Android.
• Hands-on watchOS and Wear OS development experience, using Swift and Kotlin as appropriate.
• Experience with Apple Watch HealthKit workout sessions and Wear OS Health Services.
• Practical experience with real-time heart-rate tracking and wearable communication.
• Experience integrating AI features and using AI coding tools, with independent code review, testing, and debugging skills.
• Strong API integration, state management, local storage, and data synchronization skills.
• Ability to propose technical solutions, communicate clearly, and maintain documented code.

Preferred Experience

• Real-time voice AI and audio streaming.
• Bluetooth heart-rate monitors or fitness equipment.
• Fitness apps, video playback, and in-app subscriptions.
• Backend architecture and API design.

NOTE: Experience integrating Apple HealthKit and Android Health Connect and Develop watchOS and Wear OS components is important for this job.