Capital One Software Engineer System Design Interview Questions
Practice the exact questions companies are asking right now.
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Capital One
Medium
Software EngineerDesign a highly reliable account balance system
Scenario You are designing a backend service that stores and updates user account balances (like a wallet/bank ledger). The system must be highly reli...
System Design
0
0
Dec 25, 2025
Capital One
Medium
Software EngineerDesign a cross-region event processing platform
Scenario Design a cross-region event processing platform that ingests events from producers, stores them durably, and delivers them to multiple consum...
System Design
0
0
Dec 25, 2025
Capital One
Hard
Software EngineerDesign a scalable banking system
System Design: Online Banking Platform Context Design an online banking platform (scope similar to a credit-card application system) that supports: - ...
System Design
0
0
Sep 6, 2025