Got asked very easy questions which I solved almost instantly. Had a good chat with the interviewer because there was quite some time left. Was rejected two weeks later on a Sunday. No feedback at all.
Interview questions [1]
Question 1
Implement function to calculate moving average for a Python list.
Classic quant brainteasers and statistics questions. Some coding portions with leetcode medium level DP problems.
Was phone screen + 1 hour online screen a few days later.
Full interview would have been a whole day, with 4-5 full interviews, but did not reach that point.
Interview questions [1]
Question 1
Classic brainteasers and coding problems on leetcode.
I applied online. I interviewed at Citadel (London, England) in Nov 2024
Interview
The process contains interviews of 45 minutes, i passed three interviews two of them was with quants and a third one with a software engineer. The interviewrs was nice and the questions was about statistics (linear regression, PCA, regularization...), brain teasers and code (type leetcode meduim) and also the software engineer asked me to code a class (oriented object programming).
Interview questions [1]
Question 1
Two guys would like to meet at a train station and they will arrive at a random time to the station (between 4pm and 5pm) each one will wait 10 minutes for the other what is th eprobability that they will meet? (the brain teasers was classical ones all of them are in the green book). Good luck and don't hesitate to code a little bit of oriented object programming. (it's because of this i didn't get the offer)
Quantitative Research Intern applicants have rated the interview process at Citadel with 3.4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 71% positive. To compare, the company-average is 46.4% positive. This is according to Glassdoor user ratings.
Candidates applying for Quantitative Research Intern roles take an average of 14 days to get hired, when considering 14 user submitted interviews for this role. To compare, the hiring process at Citadel overall takes an average of 20 days.
Common stages of the interview process at Citadel as a Quantitative Research Intern according to 14 Glassdoor interviews include:
Phone interview: 29%
One on one interview: 29%
Presentation: 21%
IQ intelligence test: 7%
Other: 7%
Skills test: 7%
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