Four rounds including meeting with various members of team and department. One interview was "discussion exercise" which was definitely different. It was not different in a bad way, just not something I've experienced on any other interview.

If you get through the initial resume screen, you'll be invited to fill out multiple psychological-centric surveys. If your results are in line with what that team is looking for, then you'll have to speak with an outside consultant who'll ask random questions. Their role is to ascertain how you think and figure out how you process information. Then if you do well on that, then a phone interview with the hiring manager. If that goes well, you'll get invited on campus for a full day of interviews. Depending on the team, you might have a test (coding/math/etc). The face to face is where you get your first taste of Ray's Principles. Everything is recorded, even the phone interview previously mentioned. You'll either love it or hate it, hopefully you find out before accepting. The interview process is long and a bit of a headache but I liked it. I turned the role down because there's no amount of money they could pay me to work for the hiring manager, otherwise I probably would've accepted.