Creare un Sito Web Mobile

I was looking for a continuos phonegap developer with experience, he need to starts from a layout and make the application. first work: will be about to realize an iphone app version starting from a phonegap already-done app on android platform. so i will provide layout and the android phone gap version, i will have to make the iphone phone gap version only at the end. the app about this work, will only make json call to a web server, so the app will take all contents and show them to the user. let me know your experience and if i find something interesting i will show you more about the work in private message. if you have some kind of price to understand better how much you want, it will be nice. remember that this is just a test work, my target is to find somebody that can work with me on all my projects.