Extensive, initial call with manager, in-person interview with manager, senior manager, then senior VP. Sprinkled phone interviews with everyone else on the team (4-6 people). Senior manager asked for a 2 page write up on a specific IBM product and for some ideas on how it could be incorporated to specific project work. Once they want to start making an offer, you work with an external recruiter which was a strange experience, but that's when you have to negotiate hard for what you want.