Build online Bidding website

Hi, Am looking for a developer who can work on my project which is related to an online bidding website. It should be started from scratch and i can provide the detailed requirements once i shortlist some of you. Below is a short description of what am looking for. > Its not a typical ecommerce website which sells on the shelf products. > To make it easy, its a reverse Ebay process. This website will have 2 kinds of traffic ( Seller and Buyer) . There should be a facility where the buyer can quote his price for a product and various sellers can bid the price and the buyer picks one of them. I can provide the detailed requirements later. I have the domain and logo for my website. I believe this would need PHP,RUBY,Dot net and Java programming [login to view URL] i would let the developer pick the programming languages to fulfil the requirement. Please send your portfolio so that i can pick the right person. Thank you.