Service Provider Portal

I am looking for a fully functional website portal to provide a public service vendor and supplier business database. The website will provide information about each business (location, business type/category, contact info descriptive text, etc.) and will incorporate links to several images. The website should allow these businesses to register (including username and password), input profile information, maintain a product and services listing, and upload relevant image/document files (subject to approval). Upon successful registration, businesses will be responsible for maintaining their own details, associated content, service and product listings. Registered Businesses should be fully indexed and the website should provide a mechanism for searching and retrieving details as required. Searchable fields should include elements such as name, location, products, services, keywords, and/or business type. The search result lists should include details of relevant businesses, with the ability to drill down into products or other information of interest. Preferably, the website should be developed using Web 2.0 technology. Open Source (IIS) is the preferred technology stack and the site must utilize a backend database. Design elements already in place include company branding information and logo, but all other elements for this project, including but not limited to; design, database. All elements must be intuitive and easy to understand, operate, use and navigate. The business is for use by the wireless telecommunications community; please ensure that design of website reflects this. Updates are requirement periodically, to illustrate progress of the site development. Payment will be placed with GAF escrow. If considered for this job I will contact you and a submission of a template and/or wireframes of what the site will look like will be requested.