Full Stack Mobile Developer - Role DescriptionWe are seeking a Full Stack Mobile Developer to join our team and take ownership of our health monitoring mobile application. This application integrates with a Bluetooth-enabled ring pulse oximeter to collect health data throughout the night. The ideal candidate will be a hands-on developer with expertise in both mobile development (Flutter/Dart) and backend technologies (C#/. NET), capable of ensuring seamless device integration, reliable overnight data collection, and robust backend connectivity with Azure services. Responsibilities- Lead the development and maintenance of cross-platform mobile flagship application using Flutter/Dart for iOS and Android. - Optimize Bluetooth connectivity with the ring pulse oximeter device. - Address mobile battery optimization challenges to guarantee reliable overnight data collection. - Introduce in app features to provide payments, notifications, and support (chat)- Manage the release process for both the Apple App Store and Google Play Store. - Collaborate with backend developers on Azure-hosted. NET services, contributing to backend development when required. - Ensure compliance with health data security and privacy standards. - Work independently while providing technical leadership within the team. Qualifications- Advanced English communication skills (C1 level), both written and spoken. - 7 years of professional software development experience, with strong expertise in mobile development. - Proven experience with Flutter/Dart for cross-platform mobile applications. - Working knowledge of C# and. NET, with the ability to contribute to backend services. - Deep understanding of Bluetooth Low Energy (BLE) implementation. - Experience with mobile battery optimization techniques for background processes. - Successful track record of publishing and maintaining apps in the App Store and Google Play. - Experience integrating with Microsoft Azure services. - Familiarity with Firebase (Authentication, Crashlytics, Analytics), Sentry, and PostHog. - Familiarity with in-app payment systems (such as Authorize. Net, Stripe)- Strong problem-solving abilities and attention to detail. - Prior experience in health or medical app development is a plus.