M&A Analyst Intern applicants have rated the interview process at UBS 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 62.4% positive. This is according to Glassdoor user ratings.
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First there is a screening, then online tests and then interview with 2 analysts. Interviews consisted of a mix of technical and fit questions. I received an answer within a few days.