Jane Street Business Development Manager Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 80 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Jane Street.
Jane Street
Business Development
Mid Difficult Positive experience No offer 3 rounds
Interview process
Recruiter call Technical screen Onsite
Interview formats
Technical Case
The interview was challenging but also engaging. They really wanted to hear how I approached problems and how I thought through them. It was important to be really careful with any numbers I used and to explain why I chose them.
Confirmed questions1 question
- Can you estimate the number of towels needed to absorb the entire ocean?
Jane Street
Business Development
Entry Average Neutral experience No offer 3 rounds
Interview process
Take home Phone screen Technical screen
Interview formats
Case Technical
Applied online, then got a take-home exam which included an excel case and written answers. After that, had a phone interview with two team members where we discussed market sizing. Then, a case study where I had to design a stock exchange. That's where it ended for me.
Confirmed questions1 question
- Could you estimate how many books have been written in total?
Jane Street
Business Development Intern
Intern Difficult Positive experience No offer 3 rounds
Interview process
Take home Technical screen Onsite
Interview formats
Technical Case Presentation
You'll start with a written task involving excel analysis. Following that, there will be a few interview rounds featuring challenging logic and IQ puzzles. It's important to articulate your thought process and think aloud with the interviewers. You'll also be expected to perform live data analysis and discuss market-making strategies.
Confirmed questions1 question
- Can you estimate the total number of plastic bags in your country?
Jane Street Business Development Manager Interview Questions
Quoted word for word from Jane Street interview reports.
“What is the probability that the World Series goes to a 7th game?”
Read reports →“What is the probability that the product of two dice rolls results in a perfect square?”
Read reports →“What is the count of the digit '1' when considering all numbers from 0 to 200?”
Read reports →“Regarding a man on a bridge and a train, how fast is the train going relative to the man?”
Read reports →“What's the largest number where multiplying its digits results in 96?”
Read report →“Can you estimate the number of towels needed to absorb the entire ocean?”
Read report →“What's the smallest integer value for x that will make the expression 3/4(3/4(3/4x+7)+7)+7 result in a whole number?”
Read report →“Can you estimate the number of wheels in New York City?”
Read report →“Can you estimate the market size for the statue of liberty?”
Read report →Formats, difficulty and experience
Across all 80 Jane Street interview reports.