Phone screen with a live coding question followed by an on-site interview. Thumbtack has one of the nicest offices I've ever visited. The on-site interview questions were not difficult. The coding question was easy and fair, though I could not finish it in the time given. I may have talked too much before the question was given, depriving me of valuable coding time. There was a troubleshooting session involving a very unlikely scenario. I thought it was absurd but as the interviewee I played along. The interviewer probably had the intention of measuring your system knowledge. In my personal opinion, the question did a bad job of that and just measured your knowledge of system trivia. The other interview sessions were fair.