Top 50 software design Interview Questions
The most frequently asked software design questions across all roles and companies, ranked by real interview frequency. Updated daily.
Implement a function that returns concise definitions of the five SOLID object-oriented design principles.
Andela
Experian Health
Walmart Global TechImplement an in-memory toy application that evolves from CRUD operations to sorted prefix-based listing.
AnthropicImplement a factory-created handler chain that processes operations using the chain-of-responsibility pattern.
Activision BlizzardReturn the five SOLID principles with concise explanations of their role in maintainable object-oriented code.
Implement a transformation pipeline using factory and strategy patterns for configurable integer operations.
Design one search API with reusable behavior and specialized exact or prefix indexes for efficient lookups.
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Tests understanding of encapsulation, abstraction, inheritance, and polymorphism in object-oriented design.
Tests whether a candidate can explain encapsulation, inheritance, polymorphism, and abstraction, then apply them in real project code.
Booz Allen HamiltonTTalkdeskDDCKAP