DC office is funny. It's so small it doesn't have it's own recruiters. The recruiters in Denver handle recruiting in DC. So if you want to interview, talk to them.
Also, if you do interview, keep in mind you'll have to travel to MV for a full day interview and also a full day interview in DC. Which is actually nice if you have the time; the DC team is so small that they want to be selective with future team members.
The DC projects were cool too, one was google code I believe, and the other was a tool to allow the collection of data sets such as water well tests in developing Africa, etc.