Citadel Securities Software Engineer interview experience

Got offer

Medium

Neutral

SingaporePosted Nov 2025 · Candidate report, summarized by Dataford

I went through four technical rounds plus one leadership round.

This was for a C++ internship role, and the process felt very dependent on which interviewer I got—some parts were more about coding and others felt more like they were probing fundamentals.

The common thread was that it was definitely C++ heavy. I had to be familiar with low-level topics and comfortable discussing how things work in C++, not just solve standard LeetCode problems. By the end, the leadership round added a different dimension, but it still felt like the technical side was the core.

I didn’t receive an offer. Still, the process was challenging in a consistent way: it wasn’t

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