Whole process took 48 days between application and an offer. Had 10 interviews total, including 4 visits to Cambridge office and a few phone/Skype interviews. They are very thorough, which is great, it seems they really want to ensure they have a good fit from both technology and cultural perspective. I was very impressed with expertise of people I talked to, looks like they have a great diverse team of very smart people, so comprehensive interviewing process must be working well. I was asked a lot of technical questions and a number of logistics questions.