Jane Street Interview Experiences & Questions
6 real Jane Street interviews shared by candidates: every round, the questions they were asked, how they answered, and whether they got the offer. Latest: Jul 2026.
What to expect at Jane Street
Based on 6 real interviews
By role
The Jane Street interview process
Most common round types: Coding (3), Data Structures & Algorithms (2), Technical (2), Debugging (1), Behavioral (1), Project Discussion (1).
Real Jane Street interview questions
- game theory puzle, gvien a game, had to find an optimal strategy of play for each round,later adjusting the deterministic strategy to probabilitic play for maximal expected result
- Implement Connect Four / Connect K.
- Walk me through a project you worked on.
- Given a game, find the optimal strategy of play for each round. Then adjust the deterministic strategy to probabilistic play for maximal expected result.
- Implement a Merkle tree.
- 5 rounds, probability, data analysis, game theory, market makign , hr round
- Implement Tetris.
- Build Connect Four.
- I was asked not to share
- Build Tetris.
- build a calculator web app like the one in macOS
- It was an OOP style leetcode question
All 6 Jane Street interview experiences
“pretty rigorous, multiple stages(8) were there. each round extends a bit more on the mathematical and intuition side, with problems being more intuition based and the solution requiring approximations”
“The procss was very smooth, the recruiters are very helpful and they get back to you very quickly. I applied normally through their website. A few weeks later, I get an email that the recruiter…”
“interviewer wasn't trying to get the perfect solution, but directed me to cover the most important bits by asking the right questions such as how to handle negative numbers”
“The process was different than most tech companies. There was no Leetcode or algorithmic questions. The questions were more open-ended and the emphasis was on writing clean and obviously correct…”
“I had an initial interview with a recruiter and then progressed to the first technical stage, which I didn’t pass. It involved an OOP-based task where I had to design a system similar to VS Code…”
“For a functional programming shop, nearly every question I got was best answered in an object-oriented way, and in the deep dive the interviewer literally said he’d much rather hear about a project…”
Frequently asked questions
How many rounds are in the Jane Street interview?
Candidates report a typical 2 rounds, usually including a recruiter screen, phone screen, technical round, final / onsite round.
How hard is the Jane Street interview?
Candidates rate it 3.7/5 on average (difficult), across 6 interviews.
How long does the Jane Street hiring process take?
About 2 weeks from first contact to decision, based on reported timelines.
What percentage of Jane Street candidates get an offer?
25% of candidates with a final result got an offer (1 of 4).
What does the Jane Street interview focus on?
The most common round types are Coding, Data Structures & Algorithms, Technical, Debugging.