5+ Design Systems Built: B2B SaaS, Enterprise UX, eCommerce, Mobile and Web, Healthcare AI, Fintech

Led reusable and scalable visual craft, UI components and design tokens for complex and data-heavy industries.

Industry

Reusable/Scalable

Responsive Web

iOS/Android

SaaS

Enterprise UX

Human-AI Interaction

eCommerce

Healthcare

Fintech

Role

Product Design Lead

Skills

Figma • Scalable Design Systems • Reusable Patterns • Storybook • Confluence • Interaction • Visual Design • Accessibility (WCAG) • AI-Assisted Design-to-Code Workflow • Cursor • Git

01· Responsive Web for Healthcare AI: Desktop → Tablet → Mobile

Buttons, navigation, cards and form elements are built as reusable, responsive components with variants for every state and breakpoint. Shared spacing and padding variables keep them consistent, so the responsive design system scales to new pages without redrawing the basics.

02 · The Building Blocks of a Trustworthy Decision for 9-Figure Business in B2B SaaS

An enterprise design system for high-stakes monitoring. Spacing, grid, buttons, 1000+ icons, tables and charts are built once and reused, so a user weighing a $1M call never has to relearn the screen.

Every component is documented so anyone who reads it knows exactly how to use it: specs, do’s and don’ts, best practices, maximum character counts, and edge cases.

03 · Design Reusable UI Patterns for 5M+ Monthly App Users in B2C eCommerce & Marketplace

Audit, evaluate, then build reusable patterns that balance business goals with user needs and scale across scenarios.

04 · Fintech Payment with Conversational AI

AI interaction models and streaming states: Tell the user what the AI is doing while it processes a payment request, from a quick reply to a bank transfer.

I ensure seamless UI and interactions across mobile, tablet, desktop apps, and web platforms to secure buy-in, stay dev-friendly, and employ an AI-assisted design-to-code workflow to enhance team collaboration.

Thanks for stopping by. If you’re building something ambitious and need a design leader who still ships, let’s talk.

2026 ® Jeff Chang. All Rights Reserved.

Thanks for stopping by. If you’re building something ambitious and need a design leader who still ships, let’s talk.

2026 ® Jeff Chang. All Rights Reserved.

Thanks for stopping by. If you’re building something ambitious and need a design leader who still ships, let’s talk.

2026 ® Jeff Chang. All Rights Reserved.