Steph HuynhAs a founding member, Steph didn't just help build the product, she shaped the foundation of the team and the culture around it. She brings strong design and product instincts, and a rare ability to turn ideas into polished, practical outcomes.
● Intro
Open to work
UX Engineer where design systems meet
frontend engineering.
I build the systems and the UI on top of them. I was founding UX Engineer at Mermaid (employee #4, through Mar 2026). Before that, Microsoft FAST. Seven years shipping production UI on small teams.
● About
I work across design systems and frontend on small teams where design, product, and engineering overlap. That is the environment where I do my best work.
I was founding UX Engineer at Mermaid (employee #4) from 2023 to March 2026: product design, frontend, and the design system from zero to production. Before that, contract work at Microsoft FAST on documentation and integration guides.
I use AI for the mechanical work so I can stay on scope, judgment, and how things should feel.
When I can, I contribute in open source: 100+ across Mermaid.js, Microsoft FAST, and San Diego Tech Hub, mostly docs, components, and developer experience.
- 7
- years shipping production UI
- 2
- design systems launched 0-to-1
- 23
- components shipped to production
- 100+
- open-source contributions
Skills
What I do
Product designFrontend engineeringDesign systemsPrototypingDocumentationDeveloper experience
Tools & AI
FigmaStorybookArgosChromiumCursorClaude Code
Stack
SvelteKitReactNext.jsTypeScriptTailwindshadcn/ui
Recent Work
● Recent Work
Mermaid · Founding UX Engineer · Jan 2023 to Mar 2026
Product UI, design system, Storybook, and docs from zero as founding UX Engineer.
Product designDesign systemStorybook0-to-1
Read case study
Microsoft FAST · UX Engineer (contract) · 2021 to 2022
Integration guides and Docusaurus infrastructure for the FAST web components library.
Web componentsDocsDocusaurusOpen source
Read case study
From the Mermaid team
● From the Mermaid team
Read case studySteph has a knack for creating great user experiences! Not only has she designed (and re-designed!) entire sites and user-flows, but she built up a culture of strong UX design with reusable components and internal processes.
Steph is passionate about her work, focuses on quality and is good at communicating and collaborating with team members. In addition to her skills as a UX Engineer, I really liked her ambition to create a good team culture.
Recent Posts
● Recent Posts
See all
Visual regression for Superbloom · June 2026
Argos screenshot testing on every pull request: Storybook stories in light and dark mode, CI workflow, and review before merge.
Design systemsStorybookVisual testingCI
Read post
Superbloom → Figma sync · In progress
Strict-sync plugin: repo-owned OKLCH tokens, primitives, patterns, and a Figma showcase board for screenshots.
Design systemsFigma PluginSvelteKitIn progress
Read post
Get in touch
● Get in touch
I'm open to full-time or contract UX Engineering roles with small teams where design and engineering share the same surface.
Design systems, product UI, and docs. San Diego based, open to hybrid or remote across US and EU time zones.