I applied online. The process took 3 weeks. I interviewed at Citadel Securities (Philadelphia, PA) in Oct 2024
Interview
The interview process is pretty standard to what you would expect. First, they ask you a quick behavioral and then you go straight into probability questions. I had one big question that took me the entire time (had to used LOTP coupled with some edge case work to generate infinite geom series to solve) but iv'e had buddies with 1 quick question (simple bayes rule stuff) followed by a MM game... so note it really depends on luck of the draw.
I interviewed at Citadel Securities (New York, NY)
Interview
Three stages. Timed online assessment on probability, combinatorics, mental math, and estimation. Short recruiter call on fit and motivation. Virtual onsite with several 30 to 45 minute rounds on market making, risk reward tradeoffs, brainteasers, data interpretation, and teamwork. Decision in about a week.
Interview questions [1]
Question 1
Three stages. Timed online assessment on probability, combinatorics, mental math, and estimation. Short recruiter call on fit and motivation. Virtual onsite with several 30 to 45 minute rounds on market making, risk reward tradeoffs, brainteasers, data interpretation, and teamwork. Decision in about a week.
Applied online. Once past the resume screen, there were 2x phone screens, which if you passed, was followed by a final round superday. Superday consisted of group questions as well as individual questions.
I applied online. I interviewed at Citadel Securities in Aug 2025
Interview
started with an online assessment and then first round was like brain teasers and then the second is harder probability question and then it’s a super day and then you get the offer
