Walk me through how you would design a REST API for a simple... | Interview Question
IntermediateTECHNICALTEXT
Walk me through how you would design a REST API for a simple backend service, including endpoints, request/response shapes, and how you would handle validation and errors.
Backend Developer
General
Sample Answer
Based only on the stated role of Backend Developer, the mid-level experience target, and the default screening focus on general backend fundamentals.
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Demonstrate depth of technical knowledge
Think aloud — explain your reasoning process before diving into the solution.
Clarify constraints and requirements before answering. Ask clarifying questions.
Discuss trade-offs between approaches. Show you understand real-world engineering.
Mention edge cases, performance considerations, and how you would test your solution.
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Related Keywords
How would you version the API if requirements changed later?What would you include in the error response body?How would you validate inputs consistently across endpoints?