Design and develop a relational database for on-going work opportunity

We currently require the service of a skilled software engineer or a small team of programmers to Design and develop a relational database to store information to support a career site developed with employer brand and recruitment marketing. Require Skills • Database design/ development, experience with PHP in a LAMP environment. • Database Architecture SQL Server • Client side programming and layouts: XHTML, CSS, DIV's, W3C Standards, Cross Browser • Administration of hosting environments: Control Panel • JAVASCRIPT (jQuery), AJAX • Web Application / Services integration (XML, API, XSL, SOAP) • Social Media Integration (Facebook/Twtiiter/MailChimp) • Weblogs, Portal with User Log-on, Calendar, Gallery etc • Users should be able to create a username and password for their backend and sign up for the portal themselves • Ability to produce clearly written and documented code Your bid should include provision for the followings : EDR diagram of your database showing primary keys and other constraints. A well written word document describing the database design, the test data and results you used for your database We are looking to work with freelancers on a long term basis and with volume so please bare this in mind when quoting. Attached is additional project description. For a good understanding of application, I can provide requirements & specifications doc.