First there was a phone interview. The interviewers were extremely knowledgeable and what really stood out to me was that they made a real effort to understand the answers I gave to questions. Clearly this was not just someone following a check list. The questions were not hard in a sense, but they were deep and thoughtful. The onsite interview was relaxing and I really enjoyed it. It was like sitting around and geeking out with friends. There was a little work on a white board, but it was really just a prop for the discussions.

Not a qualified panel: 1. Asks Python library functions!!! Do you expect programmer to remember library functions? 2. Doesn't know what to ask 10 years experience. 3. Doesn't ask C skills which I know 4. Not worth to attend