I was first contacted by e-mail by a hiring manager. He indicated he found my profile online. He invited me for an on-site interview. The interview consisted in a formal presentation with slides, in front of about 20 people, followed by a one-on one interviews with about 12 people, over two days. Some of these people were managers, the others, technical people. They wanted to know about my accomplishments, what was the most challenging part, how well I collaborate with people, and how much initiative I showed in the past.

I gave a scientific talk on my research, had a roundtable discussion, went to lunch, and had 6+ one-on-one interviews. Overall a pretty laid back process. Challenging, but intellectually stimulating questions.