Strategy Analyst applicants have rated the interview process at Mercer 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 69.6% positive. This is according to Glassdoor user ratings.
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Structured, did a screening call with the team followed by a case study presentation. You are only given 2 days to prepare for the presentation. My topic was something linked to a project the team had been working on recently.