Jane Street Capital Interview Questions

308 total interview insight submissions
Interview Experience (96%)

The Interview Experience is a score from 1 star (very negative) to 5 stars (very positive) generated based on the Interview Insights at this company.

The number you see in the middle of the doughnut pie chart is the simple average of these scores. If you hover over the various sections of the donut, you will see the % breakdown of each score given.

The percentile score in the title is calculated across the entire Company Database and uses an adjusted score based on Bayesian Estimates (to account for companies that have few interview insights). Simply put, as a company gets more reviews, the confidence of a "true score" increases so it is pulled closer to its simple average and away from the average of the entire dataset.

3.8
  • Very Negative
  • Negative
  • Neutral
  • Positive
  • Very Positive
Interview Difficulty (100%)

The Interview Difficulty is a score ranging from very difficult (red) to very easy (green) generated based on the Interview Insights at this company.

The number you see in the middle of the doughnut pie chart is the simple average of these scores. The higher the number, the more difficult the interviews on average. If you hover over the various sections of the doughnut, you will see the % breakdown of each score given.

The percentile score in the title is calculated across the entire Company Database and uses an adjusted score based on Bayesian Estimates (to account for companies that have few interview insights). Simply put, as a company gets more insights, the confidence of a "true score" increases so it is pulled closer to its simple average and away from the average of the entire data set.

3.9
  • Very Easy
  • Easy
  • Average
  • Difficult
  • Very Difficult
% Interns - FT Offers (87%)

The % of Interns Getting a Full Time Offer chart is meant to provide a realistic estimate of the hiring practices of the company based on the reviews at this company.

The number you see in the middle of the doughnut pie chart is the simple average of these scores. If you hover over the various sections of the doughnut, you will see the % breakdown of each score given.

The percentile score in the title is calculated across the entire Company Database and uses an adjusted score based on Bayesian Estimates (to account for companies that have few reviews). Simply put, as a company gets more reviews, the confidence of a "true score" increases so it is pulled closer to the simple company average and away from the average of the entire data set.

54%
  • 0%
  • 10%
  • 20%
  • 30%
  • 40%
  • 50%
  • 60%
  • 70%
  • 80%
  • 90%
  • 100%

Interviews at Jane Street Capital

Filter by:
Year
Job Title
Group/Division
Location
Experience
Difficulty
Intern
Year 2024
Job Title Intern
Group/Division Sales and Trading
Location Newyork
Experience
Very Positive
Difficulty
Average
Operations Analyst
Year 2024
Job Title Operations Analyst
Group/Division Operations
Location London
Experience
Neutral
Difficulty
Difficult
Intern
Year 2024
Job Title Intern
Group/Division Prop Trading
Location New York
Experience
Very Positive
Difficulty
Very Difficult
Intern
Year 2024
Job Title Intern
Group/Division Prop Trading
Location New York
Experience
Very Positive
Difficulty
Very Difficult
Intern
Year 2023
Job Title Intern
Group/Division Trading
Location Central
Experience
Positive
Difficulty
Difficult
Intern
Year 2024
Job Title Intern
Group/Division Quantitative Trading
Location New York
Experience
Positive
Difficulty
Average
Intern
Year 2025
Job Title Intern
Group/Division Prop Trading
Location New York
Experience
Positive
Difficulty
Difficult
Student / Prospective Monkey
Year 2024
Job Title Student / Prospective Monkey
Group/Division N/A
Location Durham
Experience
Neutral
Difficulty
Very Difficult
Student / Prospective Monkey
Year 2024
Job Title Student / Prospective Monkey
Group/Division Equity Capital Markets
Location Tai Kok Tsui
Experience
Positive
Difficulty
Difficult
Intern
Year 2025
Job Title Intern
Group/Division Prop Trading
Location London
Experience
Positive
Difficulty
Difficult

Interview Questions & Answers - Jane Street Capital Examples

Sales and Trading Interview - Sales and Trading

Anonymous interview candidate in Newyork
Interviewed: April 2024
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
Skills Test
Interview
Applied through online NY office. First had a excel assignment related to client behavior. Second was a short zoom interview with one of the seniors. had very simple math questions (two), and some straight forward behaviorals (like why JSC, why S&T)
Interview Questions
about my specific experience in the resume

Trading Desk Operations Analyst Interview - Operations

Anonymous interview candidate in London
Interviewed: July 2024
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
Group Interview
Interview
Initial step is a take home excel test, if you understand excel to an intermediate level you should be fine. 2nd step is a standard HR round, just make sure you understand the role. 3rd step was a fermi question you had to work through for one hour, stuff like how many windows are in London. Got rejected after this stage.
Interview Questions
How many windows are in London?

Trading Intern Interview - Prop Trading

Anonymous interview candidate in New York
Interviewed: October 2024
Outcome
No Offer
Interview Source
Applied Online
Length of Process
1-2 months
Application
Phone Interview
1 on 1 Interview
Interview
Four rounds of interview before final round.

First round has basic probability question, similar to easy/medium problems you may find on a site like quantguide.

Second round there are two sample games. One included rolling a die and developing a stopping criterion. They were both solvable and had a concrete answer.

Third and fourth rounds there was just one game, with no definite answer. The interviewer would add stipulations to the game and see how you might approach it. Note that all the games have +EV elements, even if they aren't apparent.
Interview Questions
Trading game where you are bidding on a market (auction) on the # of heads in 200 coin flips. Spent 60-70 minutes talking about the game. Additional stipulation was that other participants get to view X amount of flips (that are unobservable to you).

Quantitative Trader Interview - Trading

Anonymous interview candidate in Central
Interviewed: January 2023
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
1 on 1 Interview
Skills Test
IQ / Intelligence Test
Interview
Stage 1: Application Review - submit a resume and online application usually as a screening test.
Stage 2: Phone interviews - Basic probability and problem solving
Stage 3: Final round - full day of interviews
Interview Questions
Hard brain teaser, given 10 stones you can organize it into any amount of groups. The product of the number of stones in each group is calculated, what is the maximum product.

Quantitative Trading Intern Interview - Quantitative Trading

Anonymous interview candidate in New York
Interviewed: January 2024
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
Interview
They asked me to schedule an interview right after I applied. The interview was over zoom and lasted 30 minutes. I was asked two probability questions. The first was quite standard Bernoulli problem. The second was a mostly standard expectation problem involving coin flips, however part of it was open ended and involved rationalising an answer without making an exact calculation. This was a bit trickier.
Interview Questions
Standard probability problems. However, one problem involved finding the expected value of the median, which could not be solved with pen and paper only and required estimation. Be prepared for questions that cannot be calculated exactly.

Quantitative Trading Intern Interview - Prop Trading

Anonymous interview candidate in New York
Interviewed: January 2025
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
Skills Test
Interview
Started with an OA with 3 probability and stats questions (not multiple choice, they were all short answer). Then there was a phone screen with a trader that went straight to technical questions. Played 2 games with the interviewer, the more difficult of a 2 was a card game with explaining the EV of multiple different scenarios and explaining what strategy was most optimal.
Interview Questions
What would the EV of your strategy be if this condition was changed?

QT Intern Interview

Anonymous interview candidate in Durham
Interviewed: November 2024
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
Interview
Phone call from trader, as opposed to other hiring processes he asked more gamey questions instead of green-book EV/probability questions. Friendly and helped when I got stuck or was heading the wrong way. Question abt two players, each has cheese and mice, hardest interview question I've had yet, don't think the answer is relevant but the thinking process matters.
Interview Questions
Can't specify in detail (against TOS)

Quant Intern Interview - Equity Capital Markets

Anonymous interview candidate in Tai Kok Tsui
Interviewed: November 2024
Outcome
No Offer
Interview Source
Applied Online
Length of Process
1-2 months
Application
Phone Interview
Interview
You have 10 unfair coins and one fair coin, what is the probability of getting an even number of Heads?
Interview Questions
You have 4 coins, what is the probability of getting an even number of Heads?

Quantitative Trading Intern Interview - Prop Trading

Anonymous interview candidate in London
Interviewed: January 2025
Outcome
No Offer
Interview Source
Applied Online
Length of Process
1-2 months
Application
1 on 1 Interview
Skills Test
Interview
Began with Online assessment. Not too hard, asking basic probs and stats questions with written responses required. After that video interview with a trader was scheduled. No behavioural questions except asking me about a student fund trading position I was doing. Technical questions were about red and blue socks in a box, finding the expected number to draw certain pairs. Follow up question asked about how to maximise profit by betting on a biased coin if you gain +$1 for guessing the correct next flip and get -$1 for guessing incorrectly. Over 100 flips what is your EV and strategy if the bias follows a uniform distribution from 0 to 1 for heads.
Interview Questions
The question about the biased coin flips.

Trading Intern Interview - Quantitative Trading

Anonymous interview candidate in New York
Interviewed: September 2024
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
Interview
First round was phone screen that asked statistics questions such as the expected value of heads if you flip 100 fair coins. They asked you to explain your answer in more detail, though compared to other firms.
Interview Questions
A markov chain question based on the likelihood of winning a game if you aim to flip TTH before TTT (or something along those lines)
video
Break into Jane Street Capital
WSO Academy helps place students in Elite Firms around the world