It was 4-5 Rounds. Starting with a behavioral, leetcode style technical, system design technical, onsite, then final offer interview. I was given a leetcode hard caching question which combined multiple leetcode questions which I could not finish.

Had a very poor interviewing process with this company. While it's great to have confidence in your brand, the interviewers act almost exclusively like the company is completely "de-risked" and that working 60+ hours for mediocre compensation is expected. Yes, ownership and growth are nice but this isn't 2010 where you take pay cuts in return for equity to join startups. Nowadays, you get market value on the salary end + equity. During the interview, my interviewer asked a harder variation of LFU cache, but had to think about my solution before agreeing that it's optimal, leaving ~20 min for an implementation. If an interview question is complex enough where this is the case, it's a poor choice for an interview question (or the interviewer should be more familiar with it). They also didn't seem very engaged (often had to prompt them to get a response). The interview ended on a very awkward note (finished close to an implementation, but not far enough for test cases), and was overall not an enjoyable experience. I would not expect to get an offer based on this performance.