Joomla PHP Custom Module Enhancement.

This is a fairly straightforward project. based On joomla Your job will be to expand the functionality of the user mangement Module. - implement group based customer access . - adapt jomsocial, forum and other modules to use the group=>user concept - Registration process using templates with a simple payment interface( payment classes are ready to use) - Billing managment for different group of user. We need a clean and well documented implementation , If you expert and willing to get a long term Partnership, this is your chance. this Project will be your reference ! for further information please contact me. thanks alot