Director applicants have rated the interview process at MKS Instruments with 4 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 59.5% positive. This is according to Glassdoor user ratings.
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Very lengthy interview process. Had 5 interviews before an offer was made. Negotiation was relatively straightforward, but took some time to finalize. HR was easy to work with and very responsive.