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Interview questions from top companies, mapped to the exact round they show up in. Prep for what you will actually face.

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The Loop aggregates publicly shared interview experiences and curated commonly-asked questions, each labeled with its source. Not affiliated with any company listed.

CC BY-NC 4.0 · © 2026

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C

Trading · Miami, FL

Citadel

Hedge fund and market maker. Brainteasers, probability, and high-performance coding.

5 interviews shared — read how each round went.

5 of 5 shown

Role
Level
FrontendNew Grad / JuniorRejected

New Grad / Junior · Frontend

5-round junior frontend process. Balanced across coding, design, and collaboration.

5 rounds · 11 questions · 2023→
BackendMidOutcome unknown

Mid · Backend

Mid backend interview. Pragmatic questions — more real-world than pure puzzles.

5 rounds · 11 questions · 2023→
FrontendSeniorNo offer

Senior · Frontend

A senior frontend loop. Fast-paced; expect follow-ups that push on depth.

6 rounds · 13 questions · 2023→
Full-stackSeniorNo offer

Senior · Full-stack

6-round senior fullstack process. Coding-heavy early, design and behavioral later.

6 rounds · 13 questions · 2025→
Full-stackStaff+Offer

Staff+ · Full-stack

5-round staff fullstack process. Coding-heavy early, design and behavioral later.

5 rounds · 9 questions · 2023→