Research Intern applicants have rated the interview process at Merck with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 50% positive. To compare, the company-average is 68.3% positive. This is according to Glassdoor user ratings.
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One interview with hiring manager and then a panel interview. I felt like the process was very transparent and appreciated that it was only two rounds. However, I was only interviewing for a summer internship.
Interview questions [1]
Question 1
They asked me to describe the type of labwork I'd done in the past and talk about previous research experience.
I had a 30 min phone call with my potential advisor (I guess depends on the department). Mostly talking about research and introduce you to the internship. Got the offer within a week.