Data Science Associate, Emerging Leaders Program applicants have rated the interview process at Nielsen with 2 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 64.6% positive. This is according to Glassdoor user ratings.
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Pretty easy initial technical round, onsite had no coding and was case study and behavioral based. The only live coding challenge was the first round, just speak to your thought process while coding it out even if you can't finish.