I need mobile app developer and designer with more than 8 years experience in C++, Objective C, swift or other than can use on android and ios. Developer need to have experience in community mobile app that can react like camfrog, text chat and able to give gift, pay, book taxi. voting poll, coupon, SOS system, buy goods and pay . It able to Scan QR code to get promotional code, payment, and download app to user phone. It need social login like facebook, lines, Cell phone number, finger print, twitter. This will be use to retrieve user data and automatically upload the app to their phone. It need feature like GPS scanning for user that are close to each other to know where they at. It will need a backend website for admin and panel to manage data with advertising advertising.