Ho presentato la mia candidatura online. Ho sostenuto un colloquio presso Jane Street (Londra, Inghilterra) nel mese di nov 2025
Colloquio
Online interview, around 30 minutes. Asked some probability-based maths questions. Had to do some algebra and find the best strategy for the game that they had proposed. Also asked for initial thoughts before actually getting into any maths.
Domande di colloquio [1]
Domanda 1
Game about a bag containing different coloured marbles with different values. Asked about optimal strategy to make the most money.
Ho sostenuto un colloquio presso Jane Street (Londra, Inghilterra)
Colloquio
Interviewed for two rounds. I passed the first round last year so was able to continue immediately with the second this year. Probability/game theory questions. The interviewers are friendly and helpful.
Domande di colloquio [1]
Domanda 1
If you roll a dice and receive that amount in dollars but have the option of rerolling up to two times, how much would you like to pay to play this game?
Ho sostenuto un colloquio presso Jane Street (Londra, Inghilterra)
Colloquio
Jane Street’s interview process is fast-paced, multi-round (But if you have a deadline they will react accordingly) , and deeply quantitative: mental math, probability puzzles, game theory..., and conversational talk just before you start doing the problems
Domande di colloquio [1]
Domanda 1
Some basic probability questions (more like brainteasers) involving expected values and markov chains. You should brush up on the greenbook and be comfortable with n-sided dice and strategies involving dice in general.
I went through the first 2 rounds, they were mostly technical. Mostly dice game problems and basic-medium probability questions, nothing on market making. Heavy emphasis on expected value. Harder to get the interview than the interview itself.
Domande di colloquio [1]
Domanda 1
Rolling a 100-sided die, best rule to stop, $1 to play again.
