I applied online. The process took 2 weeks. I interviewed at Citadel Securities in Nov 2021
Interview
The interviewer will first introduce himself/herself, then interview questions, at the end there is a Q&A. In the email it says you might need to use a live coding website, but in my case I didn't use it.
Interview questions [1]
Question 1
1. Run through my resume.
2. Given n random variables from the same distribution. Correlations between each pair of two variables are the same. What is the range of the correlation.
I interviewed at Citadel Securities (London, England)
Interview
Dynamic programming question with some expectation computation. It also involved cv based questions with emphasis on technical topics on the projects I did. It was okay on difficulty, I could have passed it.
I interviewed at Citadel Securities (New York, NY)
Interview
resume submit, then 45 min call with interviewer. interview was really nice, calm, and provided guided hints. first 30 minutes were technical on math and coding and next 15 min were behaviorual.
I interviewed at Citadel Securities (London, England)
Interview
Long discussion about stats concepts like hypo testing, regression etc. Multiple standard brainteasers, can be found online. Interviewers are helpful, it is a genuine discussion rather than a one way solving interview
Interview questions [1]
Question 1
Long discussion about stats concepts like hypo testing, regression etc. Multiple standard brainteasers, can be found online.
