How would you implement an MLOps pipeline on AWS using SageMaker, CodePipeline, and Lambda?
The AWS ML Engineer staple. The answer that scores is a clean division of labor, CodePipeline owns code, SageMaker Pipelines owns the ML DAG, the Model Registry is the handoff point, plus the cross-account detail that separates real builds from doc reading.
Updated Sep 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
The AWS ML Engineer staple. The answer that scores is a clean division of labor, CodePipeline owns code, SageMaker Pipelines owns the ML DAG, the Model Registry is the handoff point, plus the cross-account detail that separates real builds from doc reading.
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.