Interview process was very long and intense. Multiple interview stages were held with various different members of teams that you would potentially be involved in. During the technical interview a lot was asked for fundamentals of computer science, even for a more senior level role. Things like asking to describe all different constructs and algorithms. A whole exhaustive list is given to you, but focus on the basics too. It is understandable with the sheer scale of resources they work with, so make sure that the job is REALLY something you want and can work for and you will succeed.