I interviewed at Citadel Securities (New York, NY)
Interview
Needed to pass a math test online with something around 15 questions. Mainly brainteasers and probability questions. Then I had an interview with a junior with market making questions like make a market on square root of ... Then a few probability questions and behavioral questions.
Interview questions [1]
Question 1
What is the square root of x with x a random value
Online interview with behavioural and probability questions. The interviewers were very friendly and made the process comfortable. Overall, it was a positive experience and felt fair in both structure and difficulty.
I applied online. I interviewed at Citadel Securities (Sydney) in Apr 2026
Interview
It was a 45 minute online interview on Zoom. First half was on behavioural questions. Second half was a small market making game. The interviewer was professional and friendly. Overall good experience.
I applied online. The process took 4 weeks. I interviewed at Citadel Securities (Sydney) in Mar 2026
Interview
Classic tell me about yourself question, then a market making question. Interview also probed me a few questions about my resume. The whole interview took about 30 minutes with just 1 market making question
Citadel Securities interviews FAQs
Quant Trader Intern applicants have rated the interview process at Citadel Securities with 3.8 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 75% positive. To compare, the company-average is 53.8% positive. This is according to Glassdoor user ratings.
Candidates applying for Quant Trader Intern roles take an average of 38 days to get hired, when considering 12 user submitted interviews for this role. To compare, the hiring process at Citadel Securities overall takes an average of 25 days.
Common stages of the interview process at Citadel Securities as a Quant Trader Intern according to 12 Glassdoor interviews include:
Phone interview: 27%
Skills test: 27%
One on one interview: 20%
Group panel interview: 13%
IQ intelligence test: 13%
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