I applied through an employee referral. I interviewed at Jane Street in Jan 2021
Interview
I was rejected after the second phone interview. They asked only probability and combinatorial questions. I recommend Brilliant to prepare for the interview, although it's definitely not enough. Most of the questions can be found on the Internet forums
Interview questions [1]
Question 1
Probability that in "n" coin flips there will be even number of heads.
The process was pretty nice I woke up and they gave me food we talked for a couple of rounds some brainteasers, some system design, some technicals, just be strong in your fundamentals.
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.
Trading Intern applicants have rated the interview process at Jane Street with 3.9 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 81% positive. To compare, the company-average is 63.8% positive. This is according to Glassdoor user ratings.
Candidates applying for Trading Intern roles take an average of 13 days to get hired, when considering 46 user submitted interviews for this role. To compare, the hiring process at Jane Street overall takes an average of 17 days.
Common stages of the interview process at Jane Street as a Trading Intern according to 46 Glassdoor interviews include:
Phone interview: 43%
Skills test: 15%
One on one interview: 13%
IQ intelligence test: 11%
Presentation: 9%
Group panel interview: 2%
Other: 2%
Personality test: 2%
Drug test: 2%
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