Two phone interviews- 1 w/ HR, 1 w/ team members. One in person interview that was an intense, all day affair. Took months to schedule, I had to follow up with them multiple times to make sure they had no forgotten about me. Sat with multiple groups and team members during the formal interview (`10 people all together), had to give a presentation and submit a writing sample. Plenty of opportunity to ask questions of the interviewers.