Citadel Securities Software Engineer interview experience

It began with a HackerRank coding assessment that tested problem-solving skills, coding efficiency, and familiarity with common algorithms and data structures.

After that assessment, the rest of the interviewing followed the same general theme—evaluating how I approach problems and how efficiently I can turn that thinking into working code. I didn’t have the exact prompts in front of me anymore, but the structure felt consistent with an algorithms-and-data-structures screening.

I didn’t end up with an offer. Even so, the experience was clean in the sense that it was predictable: they were