Got referred by a friend/former colleague. Several stages including a couple of introductory calls, several technical interviews with various degrees of depth, and a task to code at home, followed by a review. Overall, everyone involved was highly professional, forthcoming, relaxed, supportive and good humored. Best and easiest job interview so far.

The interview itself was pretty standard one (HR inteview, tehcnical interview, technical assignment). The problem was that I was rejected with very suspicious feedback. Luckily, I have a close friend working there who digged little bit up about my application, and we relaized that they have mixed up stuff and looked at someone else's assignement as if it was mine, and I got rejected based on that. Very unprofessional.