Jane Street

Collaborative problem-solving with probability and game theory

Low time pressure ~21 days to hire

Jane Street interviews emphasize reasoning ability over speed. Expect probability puzzles, expected value problems, and collaborative game-based assessments. No finance background required — they care about how you think through problems.

Interview Rounds

Round 1:Phone Screen

45-60 min

Problem-solving, probability, and mental math questions. Think out loud — they want to see your reasoning process.

Round 2:Technical Interview

60 min

Coding (any language), probability, statistics, and expected value. Questions build in complexity.

Round 3:Technical Interview 2

60 min

Deeper probability and game theory. May include a trading simulation or card game.

Round 4:Superday

Full day

Mixed behavioral, technical, and team-building activities. Multiple interviewers throughout the day.

Focus Areas

Probability & expected valueGame theoryMarket making gamesBrainteasers & logicCollaborative problem-solving

Preparation Tips & Learning Paths

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