Summer Chang
Senior Product Designer | Complex Workflows, Design Systems, AI-Native Products
Berkeley, CAcontact@summerchang.colinkedin.com/in/summerchangsummerchang.coSummary
Senior Product Designer with 10+ years shipping customer-facing digital products across software and enterprise platforms. Turns ambiguous, data-heavy problems into clear interaction models and working prototypes, from user research through launch. Works cross-functionally with research and engineering. Work includes native iOS, voice and agentic AI, token-based design systems, UX design, and device programs for Google, Target, and Apple.
Skills
- Product design
- End-to-end product design, UX design, complex workflows, human-AI interaction, user research, usability surveys, qualitative interviews, remote testing, information architecture, interaction design, rapid prototyping, systems thinking
- Design systems
- Design systems, tokens, variables, components, states, scalable patterns, light/dark modes, responsive breakpoints, visual QA, accessibility, WCAG, engineering handoff
- Tools
- Figma, Figma Make, Adobe Creative Cloud, Cursor, Claude Code, Gemini, AI Studio, SwiftUI, Xcode, React, HTML/CSS, Vercel, Supabase, AWS
Selected work
Oakling: Family Activity and Coordination App | 2026 · Native SwiftUI iOS · App Store
- A parent-facing iOS app that helps families find and coordinate local activities. The product idea came from volunteering with Berkeley Parents Network (~60,000 parents).
- Designed, built, and shipped the App Store release across four Bay Area cities: 500+ curated activities, weekly updates, and child-data minimization as a core constraint.
Bookee: Voice AI Booking Agent | 2026 · Open source
- A voice-first AI agent that books appointments through conversation instead of forms. Defined the workflow: intents, AI/human boundaries, escalation, calendar booking, and the interface customers hear and see.
- Raised qualified lead rate from 33% to 100%, cut intake from 18 hours to 5, and reduced infrastructure cost 60%.
Alacrity Insurance: Design System | 2025 · Enterprise insurance · Figma
- The shared UI system for an enterprise insurance product. Audited a work-in-progress library and rebuilt it around tokens, components, states, icons, light/dark modes, and desktop/mobile breakpoints.
- Worked cross-functionally with engineering to reconcile product screens for handoff and cut design-to-development time about 40%.
MINA: Agentic Research Assistant | 2025 · You.com Agentic Hackathon · 1st Place
- A data-heavy research tool that ranks startups by momentum. It pulls funding, team-growth, and product-launch signals into one dashboard so users can compare companies without stitching sources by hand.
- When the original API assumption failed, reworked the product architecture mid-build and still shipped the working prototype.
Multi-Device Design Language | Google via Speck Design · 2015-2016 · $1M+ program
- A shared design language for four connected Google devices so hardware, lights, and interaction felt like one product family. Defined form factors, design attributes, and status-light behavior.
- After a 10-month research and design program, delivered the style guide and factory-ready specifications used in production.
Experience
Senior Product Designer
Jan 2017 - PresentSummer Chang Design · Berkeley / San Francisco, CA
- Independent practice covering client work and self-directed products across software and physical goods: enterprise, AI, healthcare, commerce, consumer apps, and devices.
- Designed, coded, and launched four customer-facing iOS products through App Store review: Oakling, Carvd, FurPass, and NFCtree.
- Build and maintain Figma systems (components, variables, shared patterns) and hand finished specs to engineering.
- Prototype in Figma Make, Gemini, AI Studio, and Claude; write system instructions, test model behavior, and turn concepts into working prototypes.
Client Product Design
2017 - 2025Selected client work
- Led product design, user research (usability surveys, qualitative interviews, and remote testing), and UX strategy for paying clients in enterprise, AI, healthcare, commerce, and events.