Mobile Application Development for QWatch Smart Bracelet (with SDK Integration) Overview: We are looking for an experienced mobile app developer (Android/iOS) to build a custom application for the QWatch Smart Bracelet. The SDK is available from the manufacturer, and the app should integrate device data with our backend server while supporting multi-device management. Key Requirements: Device Integration Integrate QWatch Smart Bracelet with the app using the provided SDK . Enable real-time data sync: heart rate, HRV, stress, SpO₂, sleep, activity steps, and other sports metrics. Ensure accurate handling of high-intensity heart rate tracking. Mobile Application Features User Account System (login, athlete profile). Pair multiple bands to a single account. Coach/Admin Dashboard: View group of athletes’ live/recorded data under one account. Data visualization: charts, history logs, and downloadable reports. Notifications/alerts (e.g., abnormal HR, stress). Custom Branding (logo, theme colors, name). Server Integration Connect device data to our custom server (API endpoints will be provided or designed). Store and manage athlete data securely. Support JSON / MQTT or RESTful API for external integration. Deliverables Fully functional Android app (iOS optional, quote separately). Source code (well-documented). Documentation for SDK integration + server API. Assistance in publishing app on Google Play (and App Store if iOS included). Candidate Requirements: Proven experience with Bluetooth Low Energy (BLE) app development. Experience integrating wearable SDKs / health trackers. Strong knowledge of Android (Kotlin/Java), iOS (Swift), and server-side API integration. Ability to deliver clean, scalable, and well-documented code. Prior projects in fitness/health applications are a big plus.