Role guides
Senior (L5) · Staff (L6)
AI infrastructure loops test whether you can run models in production: admission control and cost governance in front of providers, GPU-efficient serving, retrieval that does not hallucinate, and agent workflows that survive crashes.
Staff (L6)
Staff-level backend loops push past the boxes-and-arrows diagram. Expect to quantify bounds: how much over-admission, how much lag, which invariant holds during a partition, and what you sacrifice to keep it.
Senior (L5)
Senior loops check that you can design a complete, scalable system end to end, choose sensible storage and messaging, and handle the obvious failure modes without prompting.
Senior (L5) · Staff (L6)
ML platform loops blend data engineering and serving: point-in-time correctness, freshness versus cost, safe model rollout, and batch plus streaming pipelines that agree with each other.