How to Approach OOD Interviews

Object-oriented design interviews test whether you can model real-world systems with clear abstractions.

Clarify requirements first

Start by clarifying requirements: what entities exist, what actions users perform, and what scale constraints apply. Sketch core classes and their relationships before writing code.

Patterns interviewers look for

• Single responsibility for each class
• Encapsulation of state
• Extensibility for new vehicle types, payment methods, or notification channels

Next steps

Practice with our OOD question bank — Parking Lot is a great starting point.