Phone interview followed up with an onsite. I met with five engineers in their lovely offices overlooking the Pacific. Two engineers double teamed a white boarding session, another had me walk (somewhat clumsily) through some code. The other two meetings were discussions of background and interests. Overall it was a very fair opportunity to present myself anyway I chose. I managed to bollox the interviews, never mentioning that I had a very hands on understanding of their product from a users point of view, duh!