First an on campus interview, then a longer interview day at the HQ in Boston. Everything was just fit questions nothing technical at all. In Boston met with multiple people in a "speed dating" style of interviewing with other candidates. Met with 3 people at once for one of the rounds

3 rounds, hirevue, first round recruiter, superday with 5 interviews back to back - pretty easy, getting to know you , want to learn about your interests, etc talk to ppl beforehand