There were 2 rounds of interviews. The first interview is an overview of the position and technical requirements with a few basic questions. The second interview is around 6 questions and they are looking for very detailed answers. I was told in the first interview that they were hiring 6 people and that they usually don't get people as qualified as me for the position. I went into the second interview with a lot of confidence that I would get the position, but did not receive an offer, but I was taken back by the number questions, so you should over prepare.