Contract Retoucher - Social Networking

WellSquare is a startup-company (currently self-funded).  The service is essentially a community portal that connects people with a variety of diseases  to one another and provides its users with an information repository on each disease. The company is looking to hire a freelancer with UI/UX experience in social networking sites and information portals. S/he should be highly skilled in understanding user psychology, developing wireframes based on business requirements, and creating HTML mockups.  This project represents work for the "minimal viable product" that will be needed to acquire angel financing and venture capital.