Dataford
Top 23
Prep plan
Updated weekly · Last refresh Sep 24

Jane Street Research Analyst Interview Questions

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

23questions
~3htotal time
Track your progressSign up free to work through all 23 questions and resume where you left off.
Start practicing free →
1
Statistics & ProbabilityStart here. 5 questions · ~41 min
Expected Flips for Two HeadsMedium
Recently asked

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

DistributionsExpected ValueConditional ProbabilityJane Street
Maximizing Expected Value With RerollsHard

Tests expected value optimization and decision-making under probabilistic outcomes.

Decision MakingExpected ValueJane Street
Conditional Probability With Partial Deck InfoHard

Tests conditional probability reasoning under incomplete information and careful case handling.

SamplingConditional ProbabilityJane Street
More Statistics & Probability questions with a free account
2
Strategy5 questions · ~41 min
Market Making With Power-UpsHard

Tests ability to reason about market making and expected value under complex, rule-changing conditions.

market analysisJane Street
Nash Equilibrium With Asymmetric InfoHard

Tests game-theoretic equilibrium reasoning under incomplete information.

Competitive AnalysisJane Street
Valuing a Contract on Unknown Trading StrategyHard

Tests valuation under latent strategy risk and uncertainty about competitor performance.

ValuationBusiness AcumenCompetitive AnalysisJane Street
More Strategy questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
3
Behavioral & Leadership12 questions · ~98 min
Receiving Feedback and ChangingEasy

Tests how a candidate receives feedback, self-assesses, and turns critique into measurable behavior change.

CommunicationLeadershipOwnershipJane Street
More Behavioral & Leadership questions with a free account
4
More topics1 question · ~8 min
Cleaning and Aligning Noisy Time Series in PandasMedium

Tests practical data-wrangling skills for irregular time series with missing data.

missing valuesData WranglingTime SeriesJane Street
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Rolling 5-Minute Price AverageMedium
Practice
Practice drill

Calculate five-minute rolling price averages while preserving timestamps with no trades.

Window Functionsmissing valuesDate FunctionsJane Street
Clean and Transform Unstructured DatasetsMedium
Practice
Practice drill

Clean inconsistent trade-report fields, validate records, and join normalized trades to instrument reference data.

pandasdata cleaningData WranglingJane Street
Validating Inconsistent DataMedium
Practice
Recently asked
Practice drill

Identify inconsistent transaction records using null checks, reference validation, duplicate detection, and status validation.

data accuracyinconsistent datadata validationJane Street
The finish line: interview-readyComplete all 23 questions plus 3 hands-on drills to finish this plan.