Julie Zhuo
Former VP of Design at Facebook; author of The Making of a Manager; writes The Looking Glass on product, design, and leadership.
Last updated: 2026-04-12
Overview
Julie Zhuo joined Facebook in 2006 as one of its first product designers and rose to VP of Design, overseeing design for Facebook’s core products at scale. She left in 2020 and now writes The Looking Glass, a Substack focused on product thinking, design craft, and leadership. She is also co-founder of Sundial, a team performance tool.
Her writing tends toward practical frameworks derived from hard-won experience building products at massive scale.
Key Ideas
- Prototype-and-Prune: AI kills the traditional brainstorm→mocks→PRD→code→launch pipeline; replace it with rapid parallel experimentation and ruthless pruning (see prototype-and-prune)
- Good taste is the bottleneck: as AI lowers the cost of execution, the scarce resource becomes the ability to distinguish excellent from mediocre
- Identity as problem-solver: functional roles (PM, designer, engineer) matter less than the disposition to identify and solve problems directly
Connections
- prototype-and-prune — her framework for AI-era product development
Sources
- The Death of Product Development as We Know It — added 2026-04-12