I applied through college or university. The process took 1 week. I interviewed at Citadel (Cambridge, MA) in Sep 2016
Interview
After the interviewer talked about himself and the group he's in, he just ask me to go through the resume in detail and then ask me a few math and cs questions. Finally, he talked to me about something in finance and let me ask him a few questions. Generally speaking the interview is not hard.
I applied online. The process took 3 weeks. I interviewed at Citadel (Houston, TX) in Sep 2023
Interview
10 min introduction involving resume run-through,
followed up by some short basic technical questions,
then 45 min coding problem (2 related parts, easy/medium difficulty, BFS algorithm)
interviewer was kind and helped
Interview questions [1]
Question 1
Questions on websocket vs REST tradeoffs, questions on database design and optimization, analyzing time complexity of algorithms...
First round with the outside recruiter, and discuss the fit. Second round with a quant developer and ask a leetcode questions. Hiring timeline is extremely long and seems they just keep you around.
Interview questions [1]
Question 1
Leet code type of question with time and space complexity.
I applied through an employee referral. The process took 5 weeks. I interviewed at Citadel (Boston, MA) in Jan 2022
Interview
Got referred by someone and had an asynchronous coding assessment first. Got invited for the first round of interview within a couple of weeks followed by a final 3 hour-long interview