I applied through university. The process took 4 weeks. I interviewed at Nielsen in Sept 2020
Interview
I went to a virtual information session on campus and then submitted my application via Handshake. I then was invited to take an assessment. The assessment was made up of about 10 questions asking you to calculate different things. Not technical at all but I would brush up on basic math skills (questions are similar to SAT or GRE math problems). After passing the exam I was invited for a first round interview. All these questions were behavioral so make sure you have good professional or examples that show experience.
Interview questions [1]
Question 1
When was a time where you had to take a risk?
When was a time where your ethics/morals were challenged?
I interviewed at Nielsen (Cincinnati, OH) in Feb 2017
Interview
Had two interviews. One in-person on campus and one over the phone. The in-person one was behavioral while the second phone interview tailored more towards the job. Overall it was a great interview experience and they got back to me about an offer one week later.