Write an Android application

We are a college social network which enables college-goers across campuses to connect with each other. The back-end and the beta website has already been completed, We are now looking for UI designers who can build an Android app by leveraging these back-end apis. In short, the android app will mostly look like facebook. Just that the free-lancer has to work on the UI as the back-end apis are already done and would be provided during the time of development.