CRM using google apps and spreadsheet scripts

We will incorporate a project management & CRM into our google apps company intranet site. We will use the google spreadsheets in our google apps account for the database tables. We need someone to create the scripts that builds in forms, queries and reporting features into the website. The successful bidder will have proven experience using google apps and developing scripts into google sites. The database tables will need to be on google spreadsheets in our google apps account. We will provide access to a test google site on our domain to design the scripts.