Jane Street Quantitative Analyst Interview Questions

The questions to prepare for a Jane Street Quantitative Analyst interview. Questions from real interview reports rank first. Updated daily.

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Statistics & ProbabilityStart here. 36 questions · ~306 min

Expected Flips for Two HeadsMedium

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Compute the expected waiting time to see two consecutive heads when flipping a fair coin.

DistributionsExpected ValueConditional Probability

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Card Color Given Other CardsHard

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Evaluates conditional probability reasoning with dependent sampling.

Conditional Probability

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Market-Making Game vs OpponentHard

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Assesses your game-theoretic probability reasoning under adversarial conditions.

market making

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Coding4 questions · ~34 min

Palindrome Coding ProblemEasy

Practice

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Determine whether an integer reads identically forward and backward using arithmetic reversal.

coding challengeAlgorithmsedge cases

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Bulb Toggling After 100 RoundsMedium

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Assesses your reasoning about toggling patterns and deriving the final state efficiently.

logic

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Keyword Search Console ImplementationMedium

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Tests your ability to implement a practical search feature with clear input and output handling.

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Behavioral & Leadership9 questions · ~77 min

Why Jane StreetMedium

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Assesses motivation and fit for Jane Street’s quantitative, market-focused culture.

company interestmotivation

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