Community Server Ongoing Upkeep

We are looking for a Community Server Expert to help us maintain our site. This work would include the updating of our custom theme and doing some development work on the site. The site currently handles about 10,000 registered users and about 1M page views a month. It will be doing development linking Community Server, Microsoft Dynamics CRM and a Community Server storefront. So strong .Net development skills and CSS / HTML skills are required. You must be able to read and understand English as well as push back to the business users as to why or why not decisions should be made. Past work on Community Server is a MUST. You should be able to provide sites you have done work on and provide references. This work will be ongoing. We would ideally like to contract a monthly retainer with additional hours awarded as needed. Please provide both your retainer requirements and hourly requirements.