Looking for a experienced ios developer to assist in finding a home, currently at parse.com, add a payment system, and if possible Integrate a AD network, this would be a plus and negotiable. Build & Integrate a Payment system into the source code that will enable your user's to purchase items from other user's without having to exchange payment information. After project completion will need for you to resubmit to app store. Currently app is free to download, 7k users, and 4k installations to date. App is called Techsell - Buy, Sell, and Trade – marketplace for smartphones, tablets & other electronics.