Evan Willhite

AI-first frontend architecture at scale

Frontend engineer with nearly 20 years of experience building performant, accessible web applications for global SaaS platforms, Fortune 100 companies, elite universities, and more.

Currently lead engineer for ActiveCampaign's next-generation AI-first design system. Creator of Emulsify, an open-source design system generator. Recognized with multiple W3 and Webby awards.

Selected Work

Flagship projects demonstrating design system leadership and open-source contribution

ActiveCampaign Design System

ActiveCampaign Design System

2021–Present

Led architecture and development of ActiveCampaign's next-generation AI-first design system — a 50+ component React/TypeScript library powering consistent UI across a global SaaS platform. Established testing strategy with Storybook 8, Chromatic, and Vitest, and built a custom documentation platform with Nextra.

ReactTypeScriptStorybookNxCursor
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Emulsify Design System

Emulsify Design System

2016–2021

Founded and led Emulsify, an open-source design system generator used across multiple platforms. Provides a development environment, Storybook pattern library, and Gatsby-powered style guide — enabling teams to scaffold production-ready design systems from day one.

ReactStorybookGatsbyDrupal
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Expertise

Specialized in design systems at enterprise scale — and leading teams through the shift to AI-first engineering practices.

AI-First Engineering

  • Transitioned team to AI-first engineering practices using Cursor, Claude Code, Devin.ai, remote in-house agents and more
  • Established AI-assisted workflows for component development, code review, and documentation
  • Evaluated and integrated agentic tooling across the design systems team
  • Championed adoption of AI tooling to accelerate delivery without sacrificing quality

Design Systems Architecture

  • Led architecture for next-gen design system using Nx, Storybook 8, and GitLab pipelines
  • Built and maintained 50+ component React/TypeScript library
  • Custom documentation platform with Nextra (Next.js)
  • Co-led governance, adoption, and system-wide consistency

Quality, Accessibility & Leadership

  • Spearheaded visual regression, accessibility, and interaction testing with Storybook/Vitest
  • Co-led accessibility compliance and WCAG governance
  • Built advanced components including Lexical-based Rich Text Editor
  • Fortune 100 and Ivy League university project leadership

Contact

Open to discussing new opportunities