I had a phone interview, ask me about myself and my background, and then I had a 3 hour interview in front of a paper, where they asked me computer science questions. they left me alone most of the time, and came back to see if I have questions/ see what I thinking.

The process consisted of a session with a team leader, another session with 2 other team leaders, and finally a 1:1 with the CEO. Each of the sessions with the team leaders was structured as a brief introduction of themselves, the company and yourself, then a written test with 3-4 questions with sub-sections, totalling about 7-9 sub-sections. You are given time to answer the questions and the interviewer(s) go in and out the room to check your progress. They are very nice, helpful and patient throughout the interview, warn you of potential pitfalls and make sure you don't "hit a wall". The place itself looks very high-end and equipped. Plenty of parking besides the building. The general atmosphere and attitude I perceived in my visits seemed calm and friendly.