HM call, recruiter call, then four-round onsites with some standard stuff (ML, behavioural, and coding) split over a week. I would describe it as moderate difficulty (as someone else has already said). Unlike some other companies they do not ask LC hards. I cannot give more specifics as I signed an NDA. Spent around a month and a half in the process overall. The outcome was a rejection. Recruiter and HM made it clear that the interview performance was strong and the main reason for the rejection was the amount of competition; other candidates just had better experience. I feel like if experience was going to be the sticking point in the end they should have just resume-rejected me as it would have saved time for all parties involved. That being said, they were very nice people and the process and interview expectations were cleanly laid out. This was my first MLE interview post-grad-school so it was a great learning experience. My advice for anyone interviewing is to carefully read over the materials provided by the recruiter.