Ho presentato la mia candidatura online. Ho sostenuto un colloquio presso Jane Street
Colloquio
Applied online and got invitation for first-round telephone interview after 3 days. First they introduce the process of interview. Then directly get into technical. They'll ask you to explain how you thought.
Domande di colloquio [1]
Domanda 1
1. What's the angle between hour and minute at 11:40?
2. Four fair coins. 1) Probability of at least 2 heads 2) Given there are at least 2 heads, expectation of number of heads
3. Two fair dice, one 6-side, the other 10-side. You guess the sum x of two dice, if you are right, you get $x, otherwise nothing happens. Which number should you guess?
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
Domande di colloquio [1]
Domanda 1
Expected value, if throwing a dice, 2 dices and 3 dices with option to reroll.
Ho presentato la mia candidatura online. Ho sostenuto un colloquio presso Jane Street nel mese di nov 2022
Colloquio
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
Domande di colloquio [1]
Domanda 1
they describe the rules of a game and ask if you want to play it based on your expected earnings