There were two rounds. Both were telephonic interviews. First round was by the Manager of the team. He basically called to talk and discuss about the projects they had and what I would most probably doing in the team. He explained the projects. This was for about an hour. The next round was with a designer from the same team. She asked me some technical questions. It was for about 45min.

Phone interview. Went for about an hour. Got asked about 15-20 questions based on STA & device physics. The interviewer was friendly. I did answer most of the questions correctly. Didn't get a callback.