One question on this site is reported in Coinbase software engineer interviews. Each is a guided run through requirements, back-of-envelope numbers, an interactive design, user flows and deep dives with interviewer follow-ups. Patterns covered: order-book, determinism, event-sourcing, low-latency, fairness.
Attribution comes from public interview guides and candidate reports, not from Coinbase. It indicates where a question has been asked, nothing more.
Match buy and sell orders in microseconds, in a strict and provable order, never lose a fill, and stay correct when the matching engine dies mid-trade.
Large-company loops run 45 to 60 minutes, expect numbers, and spend most of the time on deep dives. Work each question above in practice mode until you can produce the requirements, the estimates and the flows without looking, then read the interview framework guide for how to structure the hour. The other questions on the site teach patterns that show up in Coinbase interviews under different names.