I applied online. The process took 1 week. I interviewed at Jane Street in Jun 2018
Interview
I applied online through a their website. A day later, I got an email asking me if I was interested in applying for the Trading Desk Operations role, and if I was then they would send me a set of exercises. The exercises were based in Excel formulas and calculating haircuts and came with documents explaining the problems and PDFs to be used when answering. They asked me to send them back in 2-3 days. I had never calculated haircuts before, so I wasn't really surprised when I got an email a few days later stating I would not be moving on in the process. Still, each email was prompt and positive, so it was a good experience either way.
2 round online interviews. first round is leetcode, 2nd round is online 1to1 zoom interview, asked me brain teaser questions only, did not discuss cv. i f up on quite easy questions. shame on me.
I applied through a recruiter. I interviewed at Jane Street (London, England) in Feb 2026
Interview
Applied through a referral. The first step was an initial HackerRank-style assessment that was pretty straightforward and mostly Excel/data-analysis type work. I had to look up values, calculate metrics like profit, and answer practical business/math questions.
The second round was with a TDOE and was much more intense. It focused on live problem solving, analytical reasoning, and probability/math concepts. I would recommend being comfortable with expected value, expected wait times, conditional probability, basic optimization, and explaining tradeoffs clearly. The interviewer cared a lot about how I broke down the problem, not just the final answer.
Interview questions [1]
Question 1
One question involved expected wait times for a train that runs every 10 minutes, compared with walking. The train took 5 minutes and walking took 10 minutes. The interviewer kept adding new factors and asked whether the expected wait time or overall travel time would increase or decrease, and why. It was very interactive.
I applied through a recruiter. I interviewed at Jane Street in Dec 2025
Interview
Only did the mathematical problem solving interview. No advanced technical knowledge required. Focused mainly on creativity within arithmetic and statistics questions. Focus more on showing your thought process than just solving the question since the interviewer is happy to help if needed.
Interview questions [1]
Question 1
A train arrives at the station every 20 minutes. If you take 5 minutes to run and 10 minutes to walk, what is the expected wait time at the station?
Trading Desk Operations applicants have rated the interview process at Jane Street with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 42% positive. To compare, the company-average is 63.8% positive. This is according to Glassdoor user ratings.
Candidates applying for Trading Desk Operations roles take an average of 19 days to get hired, when considering 72 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 Desk Operations according to 72 Glassdoor interviews include:
Phone interview: 32%
Presentation: 18%
One on one interview: 14%
Skills test: 12%
IQ intelligence test: 9%
Group panel interview: 7%
Personality test: 3%
Background check: 3%
Other: 2%
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