The interview was laid back and casual. The first interview lasted around two hours - there were some general questions about myself and my experience, followed by a psychometric test. The psychometric test was simply to see what you are like as a person, and not too much of an interview. Even though it was long it was relaxed and breaks could be taken at any time. The second interview was in the office and was a variety of tasks such as a data driven spreadsheet and a draft of a press release, but I'm sure this would be very different for an engineering role.