J'ai postulé en ligne. Le processus a pris 2 semaines. J'ai passé un entretien chez Jane Street (New York, NY) en sept. 2016
Entretien
two rounds. First round, some basic probability problems. Very easy. Second round, some probability problems, how to calculate the expectation values of flipping dices. The problems are very hard and very hard to calculate. The interview is stressful and full of uncertainty. The interviewers are nice person,...unlikely, didn't make it to the final round.
Questions d'entretien [1]
Question 1
1.possibility of getting head in one flipping
2.expectation value of the sum of 8 flipping coins. Head=1, Tail=0
The process was structured and intellectually challenging. It typically involves an initial recruiter screen, followed by probability, mental math, expected value, and game-style problem-solving interviews. Interviewers focus more on reasoning, communication, and adapting to feedback than memorized answers.
Questions d'entretien [1]
Question 1
You have two opaque boxes in front of you. At each turn, you may choose one of two actions:
Place: put one coin into one of the two boxes, chosen uniformly at random.
Take: choose one of the two boxes uniformly at random, take all the coins inside, and empty that box.
You play for exactly 100 turns. Your goal is to maximize the expected number of coins you collect.
What is your optimal strategy?
J'ai passé un entretien chez Jane Street (Hong Kong)
Entretien
Several phone calls to go to the final round. The phone calls consists of mathematical, probabilistic brain teasers which was not that hard for a mathematics major. Final round was to harsh for me, strong mentality is required
J'ai postulé en ligne. Le processus a pris 4 semaines. J'ai passé un entretien chez Jane Street (New York, NY) en avr. 2026
Entretien
Lots of expectation/probability questions. Make sure to study game-theory type question that involves expectations. Specific concepts in stochastic processes don't seem that important. The first two were relatively easy. Just make sure to ask a question if there is any uncertainty