I was referred to their graphics org recruiter, who put me forward to interview with two graphics related departments. Each of those processes consisted of an initial call with the departments hiring manager, followed by two technical interviews each with between one and three engineers within the department. During the technical interviews we talked about a variety of hypothetical scenarios to do with processes, debugging and tech design, as well as being quizzed on technical questions relevant to their departments.

I had several interviews in which I was asked how I would react in a certain situation. There was also one technical interview. There is an online blog post that explains the whole process pretty well.