Mock system design interview at Uber
A live 45-minute round on one of the questions reported in Uber interviews, run by an AI interviewer that asks one thing at a time, probes what you say, and weighs what that round is reported to weigh. It ends with a debrief: a score, what was strong, what was missing.
Design a Payment System
Accept card payments for an e-commerce platform, move money correctly exactly once, and be able to prove it.
You will not see the requirements, the numbers or the diagram before you start — that is the point.
What the Uber round is reported to look like
45–60 minutes, usually a real-time, geospatial or marketplace problem close to what the company runs.
What it weighs
- Real-time data flow and the freshness the product needs
- Geospatial indexing and matching under load
- Consistency where money and commitments are involved
- Degradation during surges and outages
The common mistake
Hand-waving the matching or pricing logic. That is the part they want opened up.
From public interview guides and candidate reports, not from Uber. The interviewer is an AI running in that style; it is practice, not a prediction.
Start the round
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