Casual Game Developer

Looking for a qualified iPhone (Android at later stage) developer with a strong portfolio of casual games. Through an API, we will reward loyalty by giving away real-life rewards linked our current product offering. Therefore candidates with previous work where this is evident will be looked at favourably. You need to be adept at C++ to make a native Iphone social games app primarily quiz/puzzle/word based. We are based in London. We would like to see previous work. Please enquire and we can further brief the project.