Senior UI Engineer specializing in React design systems and accessibility. Built Aurora at GM serving 5 brands with 60% component reuse. Open-source toolsmith 🧰 I build the stuff designers and developers actually want to use.
$ whoami
> marklearst
> Senior UI Engineer • React Component Architect • Design Systems Specialist
> Coder at Core, Think Like a Designer$ howiwork
> architect and own React component libraries and design systems
> build token pipelines and scalable CSS architecture
> ship accessibility-first UIs that pass real audits
> create microinteractions and SVG animations that feel alive
> build open-source tools designers and developers actually use$ notable
> Arctic Code Vault Contributor
> a11y-companion: 200+ active Figma users
> W3C Design Tokens Community Group contributor
> Anthropic certified: Claude Code + MCP Servers$ stack --skills
Frontend:
> React 19.2+ (Server Components, Server Actions)
> TypeScript, JavaScript, Tailwind CSS
> TanStack Start, Next.js, Remix
> Zustand, Context API
Design Systems:
> Storybook 10
> Design tokens and Style Dictionary
> Figma (Variables, Dev Mode, Widgets)
> shadcn/ui, Radix UI
> Token automation and governance
Accessibility:
> WCAG 2.2 AA
> ARIA patterns and semantic HTML
> Axe, Playwright
> Accessibility audits and usability testing
UI and Motion:
> GSAP
> Motion (Framer Motion)
> CSS animation
> SVG interactions and microinteractions
Tooling and DX:
> Node.js, pnpm
> Vite, Vitest
> Vercel, AWS
> GitHub Actions, CI/CD
> Cursor, Claude Code CLI
Data and APIs:
> Zod
> TanStack Query, SWR
> RESTful APIs and webhooks
> API Routes
> Postgres
> MCP servers
Architecture:
> Component library architecture
> Design system and token governance
> Cross brand integration
> Documentation and handoff pipelines$ projects --shipped- 🧩 @figma-vars/hooks → React hooks for Figma Variables
- ♿ a11y-companion-widget → Figma widget for real accessibility roles
- 🧮 diabetic-utils → Clinical glucose + A1C utils in TypeScript
$ projects --building- ⌚ glucoseiq → Real-time CGM app for Apple Watch (SwiftUI)
$ hireme
> open to opportunities$ focus --current
> shipping motion-driven React components designers actually want to use
> building the glue between design and code (no handoff headaches)
> creating systems that last after handoff, not just launch day$ contact --direct
🌐 marklearst.com
👨🏻💻 linkedin.com/in/marklearst
📬 [email protected]
🐙 github.com/marklearst# Code > Vibes
# Motion > Gimmicks
# Systems > One-offs
No hype. Just shipping.