I applied through college or university. The process took 1 day. I interviewed at Kantar (Waltham, MA) in May 2010
Interview
Step 1: Phone Screen (30 min background/skills/interests Q&A)
Step 2: 3 1:1 interviews lasting ~30 min ea (Director, Associate, VP)
Step 3: Case Study lasting 1 hour (30 min to analyze and pull together key slides and 30 min to discuss findings and recos)
Step 4: Shadow (30 min with someone in the position you're applying for)
Step 5: Offer (over the phone, usually 1 week after the interview process)
Interview questions [1]
Question 1
All questions were standard and industry/position specific. Expect no surprises.
I applied online. The process took 2 weeks. I interviewed at Kantar in Mar 2011
Interview
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.
Interview questions [1]
Question 1
Tell me about your background and experience leading up to applying for this position.