Rails 3 Application on Heroku with Facebook Integration

I'm looking for a developer to assist me in creating a Static FBML alternative for Facebook. I'd like for someone to look over my code to remove redundancy, clean up unused files and assess security risks. I understand that it may be difficult to estimate the amount of time involved initially so please let me know in your bid how many hours you're willing to work for or other limitations. I've also got several new features I'd like to discuss as separate jobs. I am a fair and knowledgeable employer. Thanks for your time.