marklearst
Senior Frontend Engineer who builds accessible design systems and React component libraries that teams actually want to use.
At GM, I architected Aurora serving 4 brands with 60% component reuse and WCAG 2.2 AA compliance. I ship open-source with real adoption: a11y Companion (200+ users), FigmaVars Hooks, Diabetic Utils.
featured work
Aurora Design System
Built GM's first cross-brand React design system achieving 60% component reuse across 4 brands (Chevy, Buick, GMC, Cadillac) with WCAG 2.1 AA compliance.
FigmaVars Hooks
React 19 hooks library and CLI for Figma Variables REST API. Type-safe synchronization between Figma and React apps with 100% test coverage.
a11y Companion
Figma widget bringing A11Y Project Checklist into design workflows. 200+ active users with WCAG 2.2 tooltips, progress tracking, and bulk actions.
Diabetic Utils
TypeScript library for glucose, A1C, and TIR calculations. Featured in Google AI Overview with 100% test coverage and adopted by health tech teams.
Variables Contract
Open specification for design variable governance and cross-tool synchronization. DTCG 2025.10 compliant, solving tool lock-in and version control gaps.
Skydio Component Library
Built React/Storybook component library and onboarded product and engineering teams on adoption patterns for autonomous drone platform.
what colleagues say
"The rare developer that is the marriage of creative and technology. He elevates the aesthetic and user experience of any product he is developing.
"Master craftsman with attention to detail, deep experience and passion. Mark can make the smoothest most meaningful animations with the tiniest amount of code.
"One of those rare talents that understand creative, motion and development. He's the guy that will stay up all night reading up on the latest programming frameworks.
