1)iOS app , use iOS SDK 2)Android app, Android SDK, Advanced iOS/Android App developer;Smartphone /Tablets App develop; 3)Web environment, use LAMP(Linux+Apache+MySql+PHP) ,J2EE build Web Application .Three-tier architecture,Ajax build front page. use data access framework build DAO tier. 4)Windows platform , Win DDK/SDK,Visual C++ is perfect tools. 5)Software architect, lot of experience in OOA/OOD/OOP. 6) Attached public-able reference apps as follows: https://itunes.apple.com/us/app/global-patient-safety-alerts/id673014155?mt=8&ls=1 http://itunes.apple.com/us/app/jobslinger-mystery-shop-mate/id390597964?mt=8 http://itunes.apple.com/in/app/ce-broker/id384461998?mt=8 http://itunes.apple.com/hk/app/xchange-pro-exchange-rate/id491854518?mt=8