Evan Willhite

AI-first frontend architecture at scale

Frontend engineer with 15+ 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 40+ 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 40+ 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