Phone interview, technical interview then an on-site. The on-site includes 4 interviews, none of which seemed fully prepared. The final bit was a Java excercise where you were just required to build the requested program and had another engineer in the room to ask questions.

Phone screen with one of the Engineers, tell me about yourself and basic Technical questions, Technical phone screen coding problem with collabEdit, one design question Onsite interview one coding problem one similar to present in CTCI. 2nd round System design, database design, third coding exercise for 2 hours Lastly interview with CTO