Citadel Securities·Quantitative Researcher

Citadel Securities Quantitative Researcher interview experience

No offer

Medium

Negative

New York, NYPosted Oct 2023 · Candidate report, summarized by Dataford

My interview experience was heavily focused on a specific probability-and-simulation style question, and it was unusually concrete.

I was asked about how to use a number generator that produces seven numbers to build a new generator that produces ten numbers. They didn’t just want the high-level idea—they had me implement it in Python.

After I coded the approach, the interviewer followed up with how many times the original generator would need to be called in order to get the new generator to behave as intended. The whole interaction felt technical but focused, like they wanted a tight link between probability reasoning and an actual working implementation.

I didn’t receive an offer afterward, but it was one of those

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