---
id: david-cai
kind: person
title: "David Cai"
role: "Engineer"
org_label: "BILL"
confidence: "sourced"
atlas_url: https://designsystems.fly.dev/nodes/david-cai.md
---

# David Cai

Made BILL's Trinity design system bilingual: Storybook stays the source of truth, with a CLI exposing component APIs and tokens as JSON, a hosted MCP server, and skills that enforce compliance. Reports 31 to 63% token savings per task.

## Links

- post: https://www.bill.com/engineering/how-we-made-our-design-system-bilingual

## Edges

- authored -> How We Made Our Design System Bilingual
- focus -> Agent skills, Compiled, not written, context, Evals for design systems, MCP servers
- works_at -> BILL

## Sources

- https://www.bill.com/engineering/how-we-made-our-design-system-bilingual