I had 2 phone interviews, first with HR, then with one of the managers. They then asked me to come in and meet with various people. I met with about 5 or 6 people in various positions at the company. I was also required to do an analysis of an old research account, and then give a power point presentation on it to one of the employers. They give you about 30 minutes to prep the power point and practice your pitching ideas. The interview process took all day, I was there 4-5 hours total. Only one person I met with asked difficult questions, the others were easy/average.

There is only 1 round of interview. And they basically ask questions related to check your aptitude, past yr experience/project, excel and MR concepts. The interview is quite easy as compared to other companies.