Citadel Securities · Software engineer · New grad / intern & experienced
Citadel Securities' signature SWE round
Citadel Securities’s published process. Lime marks the stage this round runs.
Built from what Citadel Securities publishes about its own process and from real interview data. No leaked question lists. The questions you get are generated against your own resume, so they are not from anyone else's interview.
Official hiring process, tracks (SWE vs Quant Research), and values/competency language
New-grad/intern loop structure, online assessment, and Superday format
Level ladder and interview-process signal for SWE
Sources last checked . Hiring loops change, so this date is the honest limit on everything above.
Conversational recruiter call covering background, motivation, and level fit
One problem in a shared editor with the interviewer watching you think
A pure LeetCode medium-to-hard problem-solving round
A spoken deep-dive on low-level fundamentals, C++-flavored given Citadel Securities' low-latency stack
A shorter fit conversation on how you work, handle ambiguity, and why this firm
Rapid-fire spoken probability and statistics with escalating follow-ups and variations
Live Python focused on numerical reasoning and data handling rather than tricky algorithms
An open-ended spoken modeling discussion: regression, model selection, validation, and an end-to-end research case