It was very lengthy. 6 rounds total including a zoom screening and case study (first and second round). It seemed very intimidating initially, but once I sat down to speak with each interviewer, my stress went away immediately. Everyone is so kind and human that the interviews were more conversational rather than strict Q&A. They also share feedback from prior interviewers so you're in the loop all the way through; there's no guessing on whether you've been eliminated or not.