Google

Very thorough and detailed, high constructive interview process, but it was 8 years ago. I'm pretty sure things have changed a lot since then. Had 6 rounds of interviews: 4 coding, 1 behavioral, and 1 thesis discussion.

I have a phone interview. The interviewer gave a very vague problem. We spent a lot of time specifying the problem, particularly the input and output format. I received two follow-up questions, both related to BFS.

It was somewhat of a long process, but the recruiter was truly helpful and informative. I had to complete a coding challenge, and from there, I had two back-to-back technical interviews where each interviewer gave me a problem and built on it.