There were 4 rounds of interviews. The final 2 rounds were in NY and there were 150 people flown out. The process was fun and I met a ton of great people.

Online assessment, zoom interview with behavioral questions, then in-person interviews, which included one 12-person, 2-hour group challenge, and a final round of 5 C-suite executives interviewing 5 candidates at a time. Questions for that final round were unlike any other interview I've ever done- honestly no way to really prepare for it!