We are seeking an experienced Flutter Developer to migrate our existing native iOS (Swift) and Android (Java) applications to a single Flutter codebase. The project involves rebuilding a feature-rich oral care app with real-time Bluetooth (BLE) functionality. You must have proven experience shipping complex Flutter apps to both the App Store and Google Play. Deep, hands-on expertise with Bluetooth Low Energy integration in Flutter is a core requirement for this role. You will be responsible for architecting the new app from the ground up using a state management solution like Bloc or Provider. The key features to migrate include a user login/dashboard, a real-time brushing screen synchronized with a BLE toothbrush, and history/statistics modules. You will also rebuild the settings area, which manages device pairing, firmware updates (OTA), reminders, and user profiles. Familiarity with writing custom platform channels to handle native functionality is highly desirable. The ideal candidate will have a strong understanding of the entire Flutter development lifecycle, including testing and deployment. Please provide links to your published Flutter applications in your proposal. Prior native iOS or Android development knowledge is a significant advantage. This is a substantial project requiring a long-term commitment and excellent communication skills. We will provide full design assets, API documentation, and access to the existing native codebases for reference. We are looking for a proactive developer who can not only code but also contribute to the technical design and problem-solving. If you have the required skills and are interested in this challenging project, please submit your proposal with your relevant experience, estimated timeline, and budget.