I applied online. I interviewed at Mercer (New York, NY) in Nov 2019
Interview
Pleasant. Serious, but also light-hearted. Definitely centered around fit along with skill and experience. Interviews were not too long, but definitely interested in getting to know you. The questions themselves are not difficult, but you have to show knowledge in your specific area.
Interview questions [1]
Question 1
How proficient do you consider yourself with Excel?
The process was all behavioral/fit questions. Not bad, 2 interviews asking about resume/experience. A lot of time to ask questions and get a good feel for the firm. The interviews were also with a few Mercer colleagues at a time.
I applied online. I interviewed at Mercer (Charlotte, NC) in Oct 2018
Interview
The interview process, for the hirevue platform was not too hard. Many of the questions involved typical behavioral questions, followed by a few consulting related questions, and a few think on your feet questions.
Interview questions [1]
Question 1
How many pennies would it take to reach the top of the empire state building?