The main interview loop (following phone screen) involved a take-home assignment followed up by two technical sessions and three behavioral sessions. The take-home assignment was a somewhat arbitrary problem largely unrelated to the position, but one which had interesting challenges and which clearly demonstrated software design skills. The problem statement was clear and comprehensive. One thing I particularly appreciated was how closely reviewers looked at the code. At one point, I included a comment about an inconsistency in the API spec and how it required some special handling by the service. A technical interviewer noticed and asked some follow-up questions about the comment and how I would restructure the API. The interview spanned about 6 hours with regular small breaks. The additional information provided helps support you through the behavioral sessions. One thing I did note is some overlap in questions during the technical sessions.