Quantitative Developer applicants have rated the interview process at OptionMetrics 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 100% positive. This is according to Glassdoor user ratings.
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Standard multiple round interview process. Conversations with head of research and then a coding challenge with engineers on the team. All interviews were virtual with the coding challenge done in a google doc.