Applied directly through their website, took 2-3 weeks to get back to me. First stage was a phone screen. Called back later in the week to arrange for me attend an interview at Nielsen. Second stage was an case study assessment where I was given data in excel sheet and I had to create a 15 min presentation within 1 hour. (Key in doing well is being able to analyse and explain well, they wanted to test my analysis and reasoning skills). Another 15 min for Q&A. Third stage, after the presentation was the interview by two managers of Retailer Services.