It all started with a phone interview with one of the HR team members. I was asked general behavioural questions, as well as why I wanted to join the firm and what my strengths were. After that, about a week later I had to do an on-line numerical test which qualified me for the assessment centre. It was 5 hours long and included group exercise with a presentation, personal interview, as well as two 1-hour long technical interviews.
As far as people are concerned, everyone was really nice, the interviewers helped me out if I was struggling with the answer and in general theyh wanted to assess how you think and whether you would fit into company's profile, rather than evaluate you dry, uni knowledge base.