About Nancy Miller, Product Design Lead

Who I Am

Designing for humans, at scale

I'm Nancy, a Product Design Lead with 12+ years shaping AI-driven, data-informed, and user-centered solutions at global companies including Yahoo! and eBay. I specialize in end-to-end UX strategy, scalable design systems, and integrating emerging AI technologies to create inclusive, intuitive, and impactful user experiences.

My career spans from building data visualization dashboards and redesigning Yahoo! Mail's navigation, to leading AI-powered product work at eBay: Magical Listings (40% faster listing creation), the Checkout Evolution (67.3% footprint reduction), the Seller Hub Advertising Tab (dedicated workspace for paid advertising, anchored by 4,929-seller research), and 10 People Team AI agents serving 21K+ employee interactions. As eBay AI Ambassador (Since 2025), I lead AI enablement across departments and reached 10K+ employees through workshops and governance programs. I thrive at the intersection of design and engineering, turning complex problems into scalable solutions that connect user needs with measurable business outcomes.

Beyond design, I'm a proud mom, climate advocate, enthusiastic traveler, minimalist, and amateur chef.

Skills & Expertise

What I Bring to the Table

UX & Product Design

Journey mapping, prototyping, responsive design, usability testing, from first sketch to polished, shipped product.

AI-Driven UX

Predictive interfaces, LLM-integrated workflows, prompt engineering, and behavioral analytics for next-generation products.

Design Systems

Scalable architecture, component libraries, WCAG 2.1 accessibility, and full RTL/LTR internationalization support.

Research & Strategy

Diary studies, contextual inquiry, synthesis frameworks, and data-driven decision making that shapes product roadmaps.

Mobile Design

Native-first thinking for iOS and Android. Complex workflows translated into intuitive, high-performing mobile experiences.

Cross-functional Leadership

Agile/Scrum collaboration, Figma-to-code handoff, mentoring designers, and partnering with engineering and PMs.

Agentic AI & AI Workflows

Building AI agents, prompt engineering for LLMs, and embedding agentic AI tools like Claude, Glean, and GPT into product design workflows, accelerating research, ideation, and delivery at scale.

Business Impact & Metrics

Connecting every design decision to measurable outcomes: from 40% faster listing creation and a 31% lift in seller engagement to $2M in influenced feature investments, through data analysis, experimentation, and executive-level storytelling.

Tools I Use

Figma Adobe XD Sketch Miro Jira Notion Hotjar Mixpanel Tableau Google Analytics InVision UserTesting

AI Tools

Claude (Anthropic) Claude Code ChatGPT / GPT GitHub Copilot Glean Agentic AI Midjourney Runway ML Perplexity AI Framer AI

Career Path

Experience

eBay

Jun 2023 – Present

eBay

Lead Product Designer

San Jose, USA

eBay AI Ambassador (Since 2025): selected company-wide to lead AI adoption and enablement. Delivered 3 full-day AI workshops across 5 departments, launched 4 company-level AI efforts, and reached 10K+ employees.
Magical Listings: AI-powered listing creation using computer vision (CV) and natural language processing (NLP). Reduced listing time by 40%, improved specification accuracy by 28%, lifted seller completion by 21%.
Seller Hub Advertising Tab: gave paid advertising its own dedicated workspace in Seller Hub, separating it from Marketing for the first time. 5 product shifts, 4,929 sellers in research, C2C non-tracking improved from 23% to 11%.
Checkout Evolution: redesigned the post-cart Review Order experience. Reduced initial page height by 67.3% (966px to 316px) through a two-tier information architecture (L0/L1). Unified 3 platforms. Research confirmed 92% of buyers come to verify, not edit.
People Team AI Agents: built and shipped 10 AI agents across 4 HR organizations (People Operations, Benefits, Diversity & Belonging, Talent). 21K+ employee interactions, 40% faster access to answers.
Led design system governance across 5 product teams, boosting component reusability by 30%.

Yahoo! Ads

May 2017 – Feb 2023

Yahoo! Ads DSP (Demand-Side Platform)

Senior UX Designer

Sunnyvale, USA

Designed and launched a mobile DSP (iOS/Android), increasing advertiser engagement by 27% and boosting campaign renewal rates by 15%.
Shaped product roadmap through user feedback and analytics, guiding over $2M in new feature investments.
Led design of advanced analytics dashboards with intuitive data visualization, reducing campaign analysis time by 38%.
Architected and scaled a design system adopted by 4 internal products, cutting UI development time by 30%.
Mentored junior designers and researchers, fostering a culture of experimentation and continuous learning.

Yahoo! Mail

Feb 2015 – May 2017

Yahoo! Mail / Media

Senior Software Engineer

Sunnyvale, USA

Directed a major redesign of Yahoo! Mail's navigation and theme system, improving task efficiency by 30% and reducing bounce rate by 20%.
Implemented accessibility-first design practices, raising WCAG compliance from 68% to 96%.
Boosted user engagement by 25% through infinite scroll and front-end performance enhancements.
Improved SEO and page load speed, increasing organic traffic by 17% through semantic HTML and site optimizations.

Yahoo! EMEA

Feb 2013 – Feb 2015

Yahoo! EMEA

Frontend Engineer

Amman, Jordan

Led bi-directional (BiDi) and right-to-left (RTL) interface rollout across 7 major Yahoo! portals, expanding accessibility for tens of millions of Arabic, Hebrew, and Persian-language users in the EMEA (Europe, Middle East, and Africa) region.
Created localization automation tools that reduced translation overhead by 60%.
Acted as regional design advocate (EMEA), ensuring local user needs were reflected in global product strategy.