What this interview will probe
Lead the team that owns Mercury's build, test, and deployment pipeline, keeping CI fast and reliable across a massive Haskell monorepo where compile times and developer feedback loops are a first-order concern (Mercury maintains open-source tooling like ghciwatch and static-ls for exactly this). You'd manage engineers improving release safety, rollout tooling, and developer productivity. An interview would explore how you scale CI/CD for a large compiled codebase, design safe deployment and rollback strategies for financial services, and lead a team balancing velocity against reliability.
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