Purely behavioral. Asked many "what would you do if" and "describe a scene" questions. Asked about project I've done on my resume. Very happy conversation. The phone interview time was unexpected and not scheduled. Took about 30 minutes.

Applied online and received a call from the Manager. The manager explained about the position and seemed to be really good at what he wanted and asked the questions upto the point. I could understand he was well prepared with my resume and questions. Then I was told to expect an interview from his team members. Got the call on an afternoon. Two persons interviewed me. One was atleast asking questions based on my resume, but the other person was not prepared to interview and asked some questions which was completely senseless. Over all the interview was arranged in poor light and seemed like they were interviewing me to just pass their time around. I am happy that I did not get another call for the next round.

The interview process was well organized and structured and it lasted a full day including lunch with the team. It consisted of several 1:1 sessions with detailed technical questions being asked. I talked to several experienced engineers as well as several younger ones. Overall it was a positive experience. I was offered the position the very next day and I accepted the offer.