Quick and painless. The recruiter reached out to me on LinkedIn and I was intrigued. Scheduled a phone interview on hackerrank, which was a simple exercise related to data structures. They called me in for an onsite right after. Onsite was a super day with a couple of other candidates. I had around 6 rounds total, lot of code/design on whiteboard. The design questions were a bit vague and open ended. Not sure if the interviewer wanted to throw me off or was simply underprepared. There was a pairing exercise which was pretty straightforward.