Dates
- Summer 2027
- Seen open from Nov 9. Closes Jan 31.
- Posting
- janestreet.com
Asked at Jane Street17 sourced
A treasure chest's price is uniformly somewhere between $0 and $1,000. You win it and pay your bid only if your bid is at least the price, and a friend will then buy it from you for 1.5 times its price. What do you bid?
First round, technical. eFinancialCareers, Dec 18, 2025
Make me a market on a contract that pays $1 per pip on one roll of a six-sided die.
First round, markets. Jane Street
Tell me about building relationships with people and how you got past a challenge with them.
First round, behavioral. eFinancialCareers, Mar 16, 2026
14 more from public sources
You and another player each roll a 100-sided die and the house pays $1 to whoever is higher (ties pay nothing). You may pay $0.20 to double your own roll. When should you double?
First round, technical. eFinancialCareers (The Bubble), Dec 18, 2025
On average, how many rolls of a fair six-sided die does it take to see every face at least once? How many to see every face at least twice?
First round, technical. eFinancialCareers, Dec 18, 2025
You bet with a crowd on one of two horses, and everyone else always backs whichever horse has more past wins. How do you bet?
First round, technical. eFinancialCareers, Dec 18, 2025
A deck has 20 cards: 19 red and 1 black. You draw one at a time, earning $1 per red, and you may stop whenever you like, but drawing the black ends the game with nothing. How do you play and what is your expected payout?
First round, technical. eFinancialCareers, Dec 18, 2025
What are the odds that I, your interviewer, am related to a professional baseball player?
First round, technical. eFinancialCareers, Dec 18, 2025
How many fair coin flips do you expect to need to see three heads in a row?
First round, technical. Jane Street
Given that a fair die roll is prime, what is its expected value, and what is the chance it is 3 or less?
First round, technical. Jane Street
Give a 95% confidence interval for the number of taxis in New York City.
First round, technical. Jane Street
What is the probability that the product of two rolls of a fair die is odd? What about three rolls?
First round, technical. Jane Street
Make a market on the maximum of three rolls of a six-sided die.
First round, markets. Jane Street
Make a market on one roll of a six-sided die where the holder may reroll once. Does it matter who decides whether to reroll?
First round, markets. Jane Street
Make a market on 1,000,000 times one roll of a six-sided die. How would you feel if I hit your bid and it rolled a 1?
First round, markets. Jane Street
Why does trading interest you?
First round, behavioral. eFinancialCareers, Mar 16, 2026
What do you do for fun?
First round, behavioral. eFinancialCareers, Mar 16, 2026
How Jane Street recruits
- 1Application
There are no real requirements for campus roles, applications are reviewed on a rolling basis, and applicants should hear back within a week.
- 2Phone screen
Some interviews are by phone, and candidates can ask for Zoom if the connection may be poor.
- 3First round
Interviews focus on collaborative problem solving; technology roles include coding in the language you know best, and trading roles do not test finance knowledge.
- 4Superday
Final interviews can be in person, with travel and hotel booked and paid by the firm.
Paraphrased from Jane Street's own page, read Nov 6, 2026.
What they say they look for. Review the interview prep pages, the Probability and Markets guide, and mock interview videos; asking great questions matters more than knowing every answer.
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