7+ years experienced in Bluetooth Low Energy iOS application development, professional with bluetooth 4.0/4.1/4.2 iOS API as well as its various profiles application (and utilities) development; The application functionality developed: advertising, scanning, connection, services discovery, characteristics discovery, GATT read/write/notification, multiple standard BLE profiles, over the air firmware upgrading, testing utilities, mesh application, etc Code management: github Related skills: BLE device firmware development, BLE iOS application development, cloud service with BLE data Projects finished: 1. BLE Sniffer 4.0/4.1/4.2: crossing-platform (Windows, Linux, Mac), python, full channel advertising data capturing, interpret in Wireshark; 2. Universal BLE tool (play master role to scan BLE devices, connection, service discovery, characteristics discovery, read, write, notification, Over The Air firmware upgrading, boot loader upgrading, etc) 3. Temperature (as well as other sensors) measurement in iOS devices, measurement devices send data to iOS (by BLE) , iOS app display testing data, show measurement location, record in local database, send data to cloud and save data to cloud database, accessing data from local history record and cloud server history record; 4. Various of BLE application profiles implementation; 5. Generic BLE tool in iOS application with functionalities like scanning devices, connection, read, write, notification, etc;