Facebook APP Developers - Experts needed

Looking for a Facebook developer with free time, not one that has alot of stuff to do all the time. He needs to be able to show a portfolio of past apps he made + be able to work quick and efective. different modifications and features adding for current fb apps + making new ones. Please only serious people. I put a low bid, as its not one project, its alot so I need to find the right person first. You need to have knowladge with php,mysql,jquery,js,java,fb developing etc.