At the time it was Towers Perrin. I applied through the website. Part of the application process included calling a phone number and answering three questions that were recorded. Then I received a call from HR and had an introductory interview. General questions: what are you interested in, what's your background. Then HR got me an interview with the San Francisco office. They flew me out, put me in a nice hotel, and paid for everything. My interview was a marathon all-day even. I talked to just about every person on the team of 15. Except for lunch, I spent about 45 minutes to an hour with each person/paid of people. Each of them had a particular area to discuss, i.e., technical abilities, cultural fit, project management skills, etc. About a week later I got the call from HR that they wanted me! P.S. I had to answer "2008" in the year, but it was actually 2007.

multiple stages ranging from video assessment, technical in office round test round, technical round. all rounds being eliminatory. questions asked are very technical in nature and requires good concept clarity.