Tech Screening

Schema change affecting clients

A backfill changes API output while the old UI remains live. Which expand-and-contract steps would you use?

What this task practices

Schema change affecting clients is a tech screening interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as easy difficulty. It focuses on Tradeoffs, Validation, Technical Reasoning. The signed-in workspace provides the tools for the round and evaluates the attempt against task-specific criteria. Reference solutions, hidden checks, evaluator instructions, and candidate work remain private.