What is a data contract, and how does it fit into a data quality framework?
Downstream pipelines shatter when an upstream team renames a column at 2am. The signal is a data contract: a versioned, enforced agreement on schema and semantics, verified at the producer before bad data spreads.
Updated Sep 2026 · Grounded in real GenAI, LLM, and AI/ML engineering interview loops and written to a senior-engineer editorial bar.
Downstream pipelines shatter when an upstream team renames a column at 2am. The signal is a data contract: a versioned, enforced agreement on schema and semantics, verified at the producer before bad data spreads.
Lead with where the obvious approach breaks, because that is the judgment they are screening for — most candidates jump straight to the happy path and lose the room.
Then walk the failure back through the pipeline in order, naming the one metric the customer's exec sponsor actually cares about before you propose the fix.
