Google Sr Software Engineer interview questions

Interview was quite long and waiting times were too high. I did waste a lot of time! Was aiming at L5 but after first round got an offer for L4, after another round of interviews I got the green light for team interview. Interviewed with HM and another Senior Engineer in the team (in two different days) and after another two weeks or so got the answer from Hiring Committee that I was being given an offer for L4 which I did not accept.

Video call interview - standard programming question. Needed to write a unit test and proved my solution worked. (had to write a topological sort for the test) I did it in time. I never got a callback after that. I thought i nailed it. The HR (recruiting for Taiwan) didn't even reply to my email. This is the second time a google HR (the other was a US recruiter) just flaked on me. I think i'm done with this company forever.