COMPANY INTERVIEW PREP
Citadel
Company-specific interview questions, preparation material, and candidate experiences for Citadel.
Latest report Sep 20261 new in the last 3 monthsView open roles ↗
THE LOOP
How the Citadel loop usually runs
Software Engineer
Based on 15 candidate reports, latest Sep 2026
- Online assessment33%
- Coding rounds33%
Percentages are the share of reports that mention each stage. They come from what candidates wrote, not from an official process.
WHAT TO PREPARE
Topics that come up most
Software Engineer
Based on 15 candidate reports, latest Sep 2026
- Arrays and strings4
Topic counts are the number of candidate reports that mention each topic. They are based on reported experiences, not an official company syllabus.
INTERVIEW QUESTION BANK
Prepare by role and interview round.
This page has 15 candidate experiences, 32 interview questions, 64 free LeetCode links. Unlock Citadel ($12) to read detailed candidate experiences and interview insights.
SELECTED ROLE
All roles
| Access | Type | Question or experience | Open |
|---|---|---|---|
| Free preview | Experience | Citadel Software Engineer NYC (Feb 2020, Rejected): 4 Rounds Feb 2020 | → |
| Free preview | Experience | Rejected From Citadel Software Engineering Internship | → |
Experience | Citadel Onsite (7 YOE): Merging Sorted Streams (Feb 2026) Feb 2026 | → | |
Experience | Citadel Phone Screen: Implement Trie (Jun 2025) Jun 2025 | → | |
Experience | Citadel NXT First Interview: Find Median from Data Stream (Jul 2025, Rejected) Jul 2025 | → | |
Experience | Option SWE C++ (Citadel Securities): First Coding Interview (Feb 2025) Feb 2025 | → | |
Experience | Citadel OA Summer 2025 Software Developer: Subarray and Reduction Questions (Jul 2024) Jul 2024 | → | |
Experience | Citadel Senior Software Engineer Rejected (Jul 2024) Jul 2024 | → | |
Experience | Citadel Securities C++ Engineer OA (May 2026) May 2026 | → | |
Experience | Citadel Screening Round (Senior SWE, Feb 2022): Best Time to Buy and Sell Stock II Feb 2022 | → | |
Experience | CITADEL - OA Experience (Software Engineer Campus OA, May 2026) | → | |
Experience | Citadel | OA | 2022 SWE Intern (partial) | → | |
Experience | Citadel Interview of Tier 3 college students (partial) | → | |
Experience | New-grad SWE at Citadel: conceptual CS grilling, then got the offer (Mar 2021) | → | |
Experience | I failed my Citadel Software Engineering Intern Interview | → |
Citadel question bank
Coding, system design, and real interview experiences. LeetCode links stay free.
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