I went through two phone interviews and five on-site interviews.

The first phone interview was really simple; there's no need to be nervous. The second one was more formal.

On-site interviews really depend on the interviewers you meet; they're not on the same level. Some interviewers had only been onboard at Google for several months themselves.

I can't recall the specific questions. However, they were generally medium-level, similar to LeetCode problems. One coding question was an exact match from LeetCode.

The system design question involved an arbitrary problem with minimal hints or feedback. Even when I asked for clarification on the requirements, the interviewer offered little information, and I ended up speaking for about 45 minutes.