Boris Cherny, co-founder of Anthropic, identifies five archetypes replacing the classic PM-designer-engineer lineup: Prototyper, Builder, Sweeper, Grower, and Maintainer. This is not a rebranding of existing roles. It is a structural acknowledgment that high-velocity teams like the one behind Claude Code require people who move between creating, refining, shipping, and stabilizing, often within the same sprint. Jenny Wen's claim five months ago that 'the design process is dead' was the provocation. This article is the blueprint for what replaces it.
Git is becoming the shared workspace. The old stack, Miro to Figma to Confluence to Jira to GitHub, created handoff drag that AI-native teams can no longer afford. The replacement is Agentic SDD, Spec-Driven Development, where precise human-and-agent-readable specs serve as the source of truth for code generation. A spec in this model is not documentation. It is a concrete articulation of logic, user intent, system state, and design constraints. If a design idea cannot be expressed as testable behavior and constraints, it is not ready to build.
The piece earns a full read because it does not stop at workflow critique. It grounds the argument in Peter Senge's systems thinking from 'The Fifth Discipline', applying it directly to the question of why telling teams to work differently never works. The SAID framework introduced here is an attempt to redesign the underlying structure, not the surface behavior. The practical stakes: designers who cannot translate intent into specs will lose ground to those who can.
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