Audit Associate applicants have rated the interview process at Intertek 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% positive. This is according to Glassdoor user ratings.
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Iirc a 3-step interview process (each interview, your interviewer goes up a level), and it was all done online. They were kinda vague about the job description at first, but it's okay.