Voleon Interview Questions
Voleon screens the way a quantitative hedge fund does. Nine of these 37 questions are coding and algorithms problems, and they are not standard interview fare: validating whether a binary string is good, counting queen attacks on points when blockers sit in the way, implementing a Kac ring with O(1) colour lookup and a k-step advance, and writing sparse matrix addition and multiplication from scratch. One asks you to simulate an exchange and reason about participation-rate trading, which is the job description restated as a problem. The probability question bundles Markov chains, an OLS rotation and a coin-toss argument into a single sitting. Ratings run harder here than the size of the page suggests, 6 hard against 5 medium and 2 easy, and almost all of it lands early: 11 of the 37 were asked in a technical screen, so the filtering happens before you meet the team. Software Engineer is the dominant role at 9 questions. Eight open a runnable console, and 62 percent are free to read.
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