Me postulé en línea. El proceso tomó 3 meses. Acudí a una entrevista en Jane Street (Londres, Inglaterra) en nov 2015
Entrevista
3 phone interviews, then one onsite interview. Phone interviews had increasing difficulty, starting with easy probability problems and some mental math, finishing at tough problems discussed almost whole interview. Onsite interview consists of 4 one hour interviews, testing both ability to solve some math problems and ability to carefully decide how much to bet.
Preguntas de entrevista [1]
Pregunta 1
On the island, there are 99 lions and one sheep. When lion eats sheep, he transforms into a sheep. Lion's primary target is to survive, secondly he wants to eat a sheep. Suppose that all lions are intelligent. How many lions will be on the island after some time?
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
Preguntas de entrevista [1]
Pregunta 1
Expected value, if throwing a dice, 2 dices and 3 dices with option to reroll.
Me postulé en línea. Acudí a una entrevista en Jane Street en nov 2022
Entrevista
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
Preguntas de entrevista [1]
Pregunta 1
they describe the rules of a game and ask if you want to play it based on your expected earnings