The first round was a general introduction to learn about the business and ask questions, the second round was a coding test and discussion with an engineer, the third round was system architecture test, the fourth and fifth rounds were discussions with other team members, mainly asking questions about work history and evaluating cultural fit. Everything was done via Google Meet. Interviewers had a very relaxed attitude, never hostile.
After five rounds I received a rejection because I had no experience with AWS at the time. I think it's not good to interview someone five times if you know right away from their CV that they don't yet have a major skill you are looking for.