Android and iPhone application for wait management

We are looking for trusted developer to develop Android and iPhone app for online wait management system. Following are the high level requirements 1) Proficiency in Android and iPhone front end development. a) Should be capable of developing beautiful UI as per Android and iOS design guide lines. b) Very strong at developing responsive app. 2) Back end development (web services). 3) It would be really nice if you have graphics asset (icons, images etc) development skills. 4) Apart from mobile app we also need to develop web app mainly for subscription management (subscribe service, monthly payment, payment history etc) 5) We prefer using Google app engine but suggestions are welcome More details of concept will be provided after initial screening. Please send us brief description about work in related technologies. If your work is available in public domain please let us know how we can get to it.