Citadel·Software Engineer

Citadel Software Engineer interview experience

Medium

Neutral

Candidate report, summarized by Dataford

My interview experience started with a recruiter-style step and then, about a week later, I got a technical call that lasted roughly 45 minutes.

The interviewer felt unfriendly, and the whole atmosphere was stressful right away. After reviewing my resume, the questions moved into two pretty different technical areas.

The first question was about combinatorics: how to compute the number of ways to form a wall of length n using bricks of lengths 2 and 3. I answered it quickly, but then the interviewer pushed into something more advanced and practical: how to get the high 8 bits or low 8 bits for a very large n faster than O(n). I got flustered because it wasn’t something I’d run into before. I tried to reason through it by mentioning

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