I applied online. I interviewed at Jane Street (London, England) in Apr 2018
Interview
It was a phone interview selection process, stretching over several rounds, in each round one was asked a variety of brainteaser questions from probability theory. One was allowed to use pen and paper in some cases.
Interview questions [1]
Question 1
What is the angle between the two sticks at a clock at a specified time?
I applied online. I interviewed at Jane Street (London, England) in Jan 2026
Interview
I did a Zoom interview.
The interveiwer was kind and asked me some probability questions.
I stumbled a bit but answered correctly in the end. However, I didn't get an offer so maybe they want someone who answers straight away.
Interview questions [1]
Question 1
Startegy of changing a line.
Is this a realistic strategy? What would change in the real world?
Technical interview round 1 and 2. Two math problems/brain teasers. Round 1 is easy, but round 2 becomes more challenging. Problems are well designed with multiple follow ups. Interviewer super friendly and nice. Great people and nice culture.
Very friendly interviewer and relatively easy questions. Quite organised in their interview process, with clear guidelines as to how to approach the interview. Focus is to explain the rationale and not just get the correct answer.
Interview questions [1]
Question 1
Probability of raining on sunday or saturday based on individual probabilities. Give upper and lower bounds on the probability of the union.
Quantitative Research Intern applicants have rated the interview process at Jane Street with 3.4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 74% positive. To compare, the company-average is 63.8% positive. This is according to Glassdoor user ratings.
Candidates applying for Quantitative Research Intern roles take an average of 18 days to get hired, when considering 19 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 Quantitative Research Intern according to 19 Glassdoor interviews include:
Phone interview: 35%
Presentation: 18%
Skills test: 18%
IQ intelligence test: 12%
Personality test: 6%
One on one interview: 6%
Other: 6%
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