Citadel Securities Software Engineer interview experience

The assessment felt like it was split into two problems: one that was medium difficulty and another that was very math-heavy. It was designed around timed coding, and it felt like the math question was the one that would separate people quickly.

I remember trying to figure out how the pipeline worked—whether everyone who applied got sent the OA or if there was a resume shortlist first—because the assessment itself was the only thing I had visibility into. After finishing the two questions, I waited for the next step, but I never got a clear sense of the timeline or how much my results would