I applied online. The process took 3 months. I interviewed at Nielsen (San Jose, San Jose) in Feb 2014
Interview
Hiring process is tedious it might take three months of tests, they even go to your home and ask questions to your neighbors. You will need to apply for around 5 test, math, English fluency, personality, communication skills, the apply a test in which you need to present to the company president your analysis, you have around 30 minutes to prepare.