Senior Systems Engineer applicants have rated the interview process at Nokia with 3 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 72.3% positive. This is according to Glassdoor user ratings.
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Asked me to solve a puzzle in the telephonic round. I wasn't carrying a pen or paper at that time and had to work it out in the mind (it was painful given that the puzzle itself was not too complicated)