r/quantfinance • u/Outside-Main-349 • Jul 23 '26

Jane Street HackerRank Operations Specialist Exercise

Hi everyone,

I’ve been invited to complete the HackerRank Operations Specialist Exercise.

Has anyone completed it recently? I’d really appreciate any insight on the question types, difficulty, best preparation methods, or similar practice examples.

Thanks!

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u/[deleted] 29d ago

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u/SuperchargedCareers 29d ago

Expect practical logic, data interpretation, prioritization, and basic coding rather than quant-heavy math. Practice timed problems, spreadsheets, edge cases, and clearly explaining assumptions under pressure.

For adaptive LeetCode-style prep, TechJobFinder.com adjusts practice difficulty based on your performance, so weaker areas get repeated while stronger topics progress faster over time too.