Ajax Developer-Basecamp functionality needed

I am looking for a programmer who is familiar with the basecamp([login to view URL]) interface, and is able to program ajax to make a similar interface. I am NOT looking to clone Basecamp, instead I am looking to have a script created that functions similiar to how basecamp allows projects/tasks/items to be created, and then sorted. Also, the ability to tie due dates to items so items can be seen that are due today/tomorrow/future/past due/etc. This is for my own use and I would hope to load it onto my own server. Would like to access from a web browser, and mobile smart phone. Please show examples of your work that are directly related and can show experience with the interface and ajax type functionality. I am open to other programming languages if they can achieve the same thing.