Everyone I spoke to was very nice. First round was a conversational 30 min phone interview. Second was a 60 min video call and very small live coding challenge with the VP of engineering. Third was a longer coding challenge with a member of the engineering team. I got nervous and choked on the longer challenge, but the problem was reasonable and the interviewer was fine. As described there would have been two more interviews, one design/architecture related and a final one with a higher up. They sent an email thanking me for my time in a couple days.