Design an AI system for automated code migration (e.g. Python 2→3, framework upgrade, language port).
Code migration is a high-value agentic task with a strict correctness bar: the migrated code has to still work. The signal is grounding in the real repo, transforming in verifiable chunks, and gating on tests, never one huge LLM rewrite.
Updated Sep 2026 · Grounded in real GenAI, LLM, and AI/ML engineering interview loops and written to a senior-engineer editorial bar.
Code migration is a high-value agentic task with a strict correctness bar: the migrated code has to still work. The signal is grounding in the real repo, transforming in verifiable chunks, and gating on tests, never one huge LLM rewrite.
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.
