Citadel Securities Software Engineer interview experience

Got offer

Medium

Negative

New York, NYPosted Dec 2025 · Candidate report, summarized by Dataford

My process started with an OA, then I moved into a sequence of LeetCode-style rounds.

I had multiple interviewers, including several LeetCode coding sessions where the questions could swing between algorithmics and math-adjacent prompts, and I also saw behavioral included.

There were three LeetCode coding rounds and a leadership component on my end. The structure felt like a typical multi-step pipeline: first the OA, then phone screens, then more technical rounds that were pretty clearly about coding fluency. The overall difficulty felt like it depended on the last steps too—one of the later interviews landed with more complexity, with OOP presented alongside algorithms. I

Create a free Dataford account to unlock the full round-by-round breakdown, the questions asked and the outcome.

Read the full report Read the full report

Preparing for this interview?

Citadel Securities Software Engineer interview guideThe full process, round by round, with the question bank Practice Software Engineer interview questionsReal questions from this role across companies All Citadel Securities interview guidesEvery role we cover at this company