Citadel Securities Software Engineer interview experience

No offer

Hard

Neutral

United StatesPosted Aug 2023 · Candidate report, summarized by Dataford

I started with a coding challenge phase, and after that I went into phone interviews where the questions were open-ended and came with follow-ups.

What stood out was how much they pushed beyond the first working solution—after I implemented something, they asked how I’d improve it, whether there was a better approach, and what tradeoffs I’d consider.

When I got to the deeper rounds, the difficulty ratcheted up fast. I remember facing LeetCode-type prompts that were graph- and topological-sort oriented, and they felt genuinely hard in the way you only solve if you’ve practiced that style of problem a lot. In another technical track, I ended up with multiple coding rounds where each problem built on the previous one, and the total

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