I applied online. The process took 6 weeks.

The process is surely not short and does require effort and time. Before accessing the interviews, you are asked to complete logic and reasoning tests, in my case requiring overall ~4 hrs. Next phase is a series of 3 interviews spanned in 3 weeks: behavioral, technical, and behavioral again, with different spooners every time. Eventually, you are asked to link some referrals who are contacted and questioned about your persona. The final step in my case was a meeting with the possible team leader.

Describe your dream job. What was your most challenging project? Which project did you like the most? Which project did you like the least?