Custom Joomla Extention

I need a new extention written for Joomla. This extention is used for listing and managing professionals listings on a website. This extention will consist of 3 parts. 1) First section is a page with tems and conditions and 2 links which go to 2 specific application forms where the professionals can request to be listed on the site. One of the forms will also be accompanied with we a image upload. The data should be stored in the database, and then have an email sent to the admin for verification. 2) The second section is a front end listing page where a user can select a "job title" and a "town" and have all the professionals contact details displayed for that town. Then all the rest of professionals outside the town in alphabetical order. 3) Lastly I require a admin section for the listings. This will consist of a management section for: Job titles = add, delete Listing requests = approve, decline(reason), pending Manage listings = add, edit, delete