I applied through university. The process took 3 weeks. I interviewed at Jane Street (Paris) in Nov 2016
Interview
After a short introduction, the interviewer asked me 3 probability questions. More than the answer, they want to know how you think, and if you do it fast. Questions for the first two rounds were basic dice and coins questions.
Interview questions [1]
Question 1
What is the probability of having a least 2 heads when tossing a coin 5 times?
4 rounds before superday. didnt make it to superday. first round was basic prob and stats questions. r2-4 is all hard game theory style questions. no behavioral at all.
i heard superday is a combination of data analysis and more games
3 online interviews before the final on-site one. The whole process is around a month. Mostly consists of probability questions. Poker chips are given in the final round to bet on certain decisions.
Interview questions [1]
Question 1
Figuring out the strategy of a computer opponent in a turn based game and devising a strategy against them.
zuerst basic fragen zum einsteigen danach ziemlich schnell weiter mit theoretischen fragen. anfangend mit einer eher leichten frage und langsam drauf aufbauend mit neuen Bedingungen. insgesamt war es meiner meinung nach eine gute Erfahrung.
Interview questions [1]
Question 1
etwas zu Wahrscheinlichkeiten in einem leicht verständlichen Setting