Friendly. Consists of behavior questions which are pretty standard. That is followed by technical questions related to things you probably would have seen in school. There was a group of 3 people asking questions. After the interview there was a tour of the office and labs which was great.

Had a video interview (recorded myself) was easy to do and they give you unlimited time. The questions were non-technical. There were about 5-7 questions. Took me under an hour.