I applied online. The process took 4 weeks. I interviewed at Jump Trading (Chicago, IL)
Interview
Probability and statistics questions that increased in difficulty over multiple rounds. I made it to the 4th round, but received a rejection shortly there after. First round was an online assessment, followed by 2 phone calls and an on site.
Interview questions [1]
Question 1
There are four balls, two black and two white. You pick two and random and flip their color from one to the other and repeat. How many times would you do this to ensure all four balls are the same color?
I applied through a recruiter. The process took 4 weeks. I interviewed at Jump Trading (Hong Kong) in Mar 2026
Interview
Few Hr calls prior and between.
First round: Probability questions, questions on general ml knowledge: lasso, ridge, mathematical justification of gradient descent, prob inequalities, linear algebra and geometric interpretations of probability. Final Onsite: Leetcode problems, stats, harder probability problems, deeper into ml knowledge: linear regression basics, pca, linear algebra, questions on the classes you have taken.
ML knowledge is very much needed.
interviewed with low-mid frequency equity team.
1st round: coding + statistics, mainly probability, stochastics and OLS. Questions are quite interesting.
2nd round: only about past experience, focus on all the details.
3rd round: onsite interview.
Well organized process: first round covered resume walkthrough, probability, and combinatorics. Final round included deeper probability questions, a data interview, and an HR discussion. Overall, a structured and positive experience.
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