Convert IOS App to Multiplayer

I am looking for someone to take my 2048 puzzle game, and add multiplayer functionality for the iphone and ipad devices. The app will also need to be reskinned for colors, icons, splash screens etc.I would also need for my add integration to be setup and customized for the game. I am looking to find someone to work on a permanent basis if your work is good as i have more work needed.