I had 4 interviews in total. The first was very high level and kind of a culture fit, the second was still high level but more related to technical experience I had. Then I needed to complete a take home programming problem before my first technical interview. The technical interview was then half covering the code I had submitted and half covering related computing concepts. My final interview was in person at the Cambridge offices. The first half of this interview I discussed a project I had worked on and went through the technical details involved, the second half was going through a standard CS interview question on the blackboard and talking about complexities. This process was quite good, however that final interview I wasn't contacted for months. When I finally got through to them after reaching out they still didn't definitely say whether or not I had the job. In the end I just had to assume they didn't want me.