Interviewed with five senior-level engineers and a director-level manager. Most of them asked senior-level questions, i.e., design questions. One asked junior algorithms.

Be careful about Google policy; if one interviewer says something bad about you, it's hard to get an offer, even if all others want you badly.

Take simple algorithm questions seriously. Explain to the interviewer as if you are tutoring them, otherwise, they may think you are missing some key points.

Design a system to analyze huge log files.