Tax Analyst applicants have rated the interview process at Vertex 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 57.1% positive. This is according to Glassdoor user ratings.
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Three stages of interview. First with HR, followed by two more interviews with the managers and the head. Overall, it's quite a typical interview. I think the process is ok.