Top 3 Matching Interview Questions
Browse 3 real-world technical and behavioral interview questions about Matching. Review scenarios, edge cases, and architectural best practices.
A rider requests a car and forty drivers are within range. Which one do you pick, and how long do you have to decide?
Ride matching system design should rank drivers by estimated pickup time and market impact, not straight-line distance. Offer the ride under a short soft lock, use a small batching window when it improves assignment quality, and keep the rider wait within a few seconds. Use this dispatch answer to show the decision, trade-off, and evidence rather than a memorised definition.
Your nostro reconciliation shows a break this morning. How do you investigate it, and how do you know when the money has actually gone?
You classify the break before chasing it, because most differences are timing rather than error: match in layers from exact reference down to grouped and tolerance matching, age what remains, and remember that your ledger being updated is not the same event as settlement becoming final and irrevocable.
A supplier sends you a feed of ten thousand products. How many of them are already in your catalogue?
You cannot know without matching, and matching is the work: suppliers send their own identifiers, spell the same manufacturer three ways, and describe attributes in units you do not use. Treat ingestion as a matching problem with a confidence threshold and a review queue, not as an import.