J'ai passé un entretien chez Jane Street en déc. 2013
Entretien
Send in CV and got a telephone interview. Mainly brainteaser type questions. They asked for a 95% confidence interval/confidence of being correct on all my answers. Most of the problems were quite easy, I'd suggest anyone thinking of applying makes sure that they're sharp on their arithmetic because you are not allowed to use a pen and paper in the first interview.
I had a phone screening call from a recruiter, they asked some standard probability questions, bayes rule, and expected value about dices. Overall experience was pretty good. Make sure you prepare your probability
Questions d'entretien [1]
Question 1
Expected value, if throwing a dice, 2 dices and 3 dices with option to reroll.
J'ai postulé en ligne. J'ai passé un entretien chez Jane Street en nov. 2022
Entretien
Very smooth. Around 30mins first round 1hr for the second round. First round consisted of easier probability based questions. Second round was similar but harder and longer questions. The interview process if approached in a calm composed manner should be easier to analyse
multiple phone interviews and a full-day Zoom interview. Interviews got longer and longer over time, but every person was very kind and helpful with hints when I got stuck. The questions get harder as the rounds progress and generally don't have a closed form answer in the later rounds
Questions d'entretien [1]
Question 1
they describe the rules of a game and ask if you want to play it based on your expected earnings