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Developer Tools / SaaSDesign SystemsProduct Interfaces
A design system that unified three product teams
StackFlow had three product teams shipping features with different UI patterns. We built a unified design system that brought consistency without slowing anyone down.
85%
reduction in UI inconsistencies
40%
faster feature delivery
24
core components covering 83% of patterns
60%
fewer design review bottlenecks
3
teams using one system
01 / The Problem
StackFlow's developer tools platform had grown through acquisition. Three product teams used different component libraries, design tokens, and interaction patterns. Users noticed — support tickets about 'confusing UI' were the third most common category. Design reviews became bottlenecks because there was no shared language between teams.
02 / Our Approach
We audited all three products, catalogued every component variant, and identified the 80/20: 24 core components covered 83% of interface patterns across all products. We designed a token architecture that could accommodate each product's brand expression while enforcing consistency at the interaction level.
03 / The Solution
We delivered a React component library published as an npm package, a Figma component library with 1:1 parity, and a Storybook documentation site that served as the single source of truth. The governance framework included contribution guidelines, a versioning strategy, and quarterly adoption reviews. We ran onboarding sessions with all three teams and provided 8 weeks of embedded support.
Tech Stack
ReactTypeScriptStorybookFigmaTailwind CSSnpmChromatic
“For the first time, our three product teams ship features that look and feel like they belong to the same platform. The system paid for itself within the first quarter.”
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