Jane Street

Jane Street is a global proprietary trading firm that uses sophisticated quantitative analysis and technology to trade a wide range of financial instruments. Known for its collaborative culture and emphasis on problem-solving, Jane Street consistently ranks among the most selective employers in quantitative finance.

Founded

2000

HQ

New York, NY

Team

2,500+

Process

3-6 weeks

Focus areas

1. 1

   Online Assessment

   90-120 minutes

   3-5 medium-hard coding problems covering arrays, graphs, dynamic programming, and probability. Trading tracks include mental math questions.

   • Practice LeetCode medium/hard problems
   • Focus on probability and expected value calculations
   • Speed matters - practice timed coding
2. 2

   Phone Interview Round 1

   45-60 minutes

   Basic probability topics including Bayes' Rule and Conditional Expectation. Questions feel conversational rather than quiz-like.

   • Review discrete probability fundamentals
   • Practice explaining your reasoning out loud
   • Don't rush - think through problems carefully
3. 3

   Phone Interview Round 2

   45-60 minutes

   Long-form applied probability problems using the same principles as Round 1 but with different constraints and scenarios.

   • Build on Round 1 concepts with more complex scenarios
   • Practice multi-step probability problems
   • Work through 'Green Book' problems
4. 4

   Phone Interview Round 3

   45-60 minutes

   Complex probability problems significantly harder than previous rounds. Tests depth of understanding and creative problem-solving.

   • Practice the hardest probability puzzles you can find
   • Focus on edge cases and unusual scenarios
   • Be prepared to work through problems collaboratively
5. 5

   Final Round (Onsite/Virtual)

   Full day

   Multiple interviews covering problem solving, probability/statistics, coding (any language), data analysis, and general interests. For researchers, includes elements of both trading and software engineering.

   • Be yourself - cultural fit matters
   • Prepare to discuss your interests and why Jane Street
   • Review all previous topics comprehensively

Intern

$4,500 - $6,000+ per week (~$180k - $240k+ annualized)

New grad

$300k - $700k total compensation

Senior

$800k - $2M+ total compensation

Compensation varies by role, with traders typically at the higher end. Strong performance-based bonuses.

Editorial summary derived from interview-process and prep-tip data. Anonymous member reviews launching with the /comp dataset.

• Master probability and expected value - this is tested at every stage
• Practice mental math daily using MyntBit's games at myntbit.com/games
• Work through 'Heard on the Street' (Green Book) problems
• Learn to think out loud and explain your reasoning
• For SWE roles, learn OCaml basics
• Practice brain teasers and logic puzzles