Supply Chain applicants have rated the interview process at J.M. Huber 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 56% positive. This is according to Glassdoor user ratings.
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I don't really remember it was a while ago but there were two rounds and the second round was more technical while the first round has some behavior questions. The 1 st one was pretty easy.