Jane Street Quantitative Researcher interview experience

The coding interview wasn’t the typical LeetCode style I expected; it leaned more toward design-heavy problem framing. In parallel, the probability/games screen focused on reasoning through games and uncertainty.

After that, I went to an onsite round where the format broadened again. I had coding and games as part of the day, and there was also a data analysis component. The data analysis question was described as a toy task and I used pandas; it was open-ended enough that it tested how I structured the approach rather than just running a known template.

Overall, it felt like a difficult