Facebook Senior Developer

Seeking someone with advanced facebook development skills. We have an app that needs some modification. Need someone who is familiar with facebook api, php and ajax. Modification would include: 1. rearranging pages inside the facebook application 2. Adding extra step to application to select friends to receive invites 3. Good understanding of permissions 4. Ability to pull birthday data and modify it 5. expert knowledge of php and ajax 6. can show previous facebook work (please show me samples of work in Facebook 7. Have worked with facebook connect