Run four‑role engineering squad

- Ersin KOÇ outlined a simulated four‑person squad — Architect, Engineer, Reviewer, Optimizer — with clear roles, design docs, reviews and benchmarks to streamline handoffs and velocity. - The model forces explicit ownership at each step so code arrives reviewable and optimizable, reducing ambiguity that slows multi‑team scaleups in practice. - Define the role, the artifact, the metrics and the finish criteria to avoid vague handoffs. (x.com 1) (x.com 2)