Creation of Bid Site in My Industry

I have a web based business and want to expand it into a bid site to connect Asia and Mid-East based customers with western service providers. The project involves a bid site not unlike rentacoder or proz but for a different area of business. On the customer side I would like for them to have a log in management page for placing jobs, they would also have an online profile page viewable by bidders. On the seller side, I would also like for them to have a similar ability to log in, create a profile page, and be able to bid on jobs. I would need an admin area to communicate between both parties and monitor job progress. ## Deliverables My business is competitive and I have a standard mutual nondisclosure agreement that would have to be read and signed before proceeding. I can email that to prospective coders. It's a typical NDA so I don't think it should put anyone off bidding. Thanks