Citadel Securities Quantitative Trader interview experience

No offer

Medium

Positive

New York, NYPosted Jan 2026 · Candidate report, summarized by Dataford

My interview experience was heavily oriented around expected value, game-theory style reasoning, and market-making concepts.

The first part felt less like coding and more like testing whether my intuition held up when the question was phrased like a decision problem. I could feel that they wanted me to reason cleanly about tradeoffs and outcomes under uncertainty.

The questions came in a quick sequence. I went through probability and expected-value thinking, then a market-making game where the goal was to respond fast and stay consistent in my logic. In the same overall arc, there was also a coding-style puzzle that felt closer to a LeetCode medium than a pure data-science exercise, but it still sat alongside the

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