I experienced a very transparent, welcoming, and efficient interview process at Postlight. The interviews were reasonably challenging, professional, and informative. I was informed of updates to my candidacy quickly and clearly, and the company was receptive to my scheduling and personal needs.
In terms of the overall process, I began with an initial interview with two PM's who asked common behavioral PM questions. Then, I was assigned a take-home product case study that required a few hours of work (which I was paid for). My next interview was to present my work on the case study to two PM's and field their questions. Then, I had a final round consisting of 3 interviews, each with two interviewers spread across all disciplines at the company (design, engineering, strategy, etc.). A few days after that, I received an offer.