Google

Recruiter call, followed by a phone interview. This interview will focus on one coding question presented in a Google Doc. The advice is to concentrate on solving the question and ignore what the interviewer might think in the meantime. If this round

Friendly staff. Nobody in the working areas. A lot of perks, including dinner. Nice environment. Mostly coding in algorithms and discussions on algorithms. Some mathematical questions and great lunchtime. Trees and hash tables.

Easy phone screen and then a difficult system design Q. Plus, normal interpersonal. Didn't make it past that round. People were very nice and the question was clear. Responses were prompt. Didn't have to wait a long time to hear back.