Paula Seo · Lead Product Designer

PaulaSeo

Complex in. Simple out. Fifteen years of consumer products, design systems, and the work in between.

Selected work ↓

01

Mobile app · 0 to 1Launched Oct 2025

Hot Wheels Showcase

Every Hot Wheels since 1968, and exactly which ones are yours.

The collector's home for a 30,000-car catalog: organize a collection, spot what's missing, and help improve a community-enhanced database. Built on a 500-component design system, with camera recognition and search that stay out of the way. 500K+ downloads in eight months, 4.8 on the App Store.

Read the case study
Hot Wheels
Showcase
iOS + Android · 500K+ downloads · 4.8 App Store
02

Web3 · Cross-teamMattel Creations

Hot Wheels NFT Garage

Blockchain collecting for people who had never touched crypto.

Marketplace transfers between AtomicHub and Rarible, a secondary market collectors could trust, and a responsible end-of-life for the collection.

Case study soon
Hot Wheels NFT Garage collection view on laptop and phone
03

AR · Companion appLicensed edition

Pictionary Air × Harry Potter

Drawing in the air, reading on the screen.

Real-time interfaces for a game that lives in two places at once — a wand in the room and a canvas on the phone.

Case study soon
Pictionary Air Harry Potter edition gameplay through the companion app
04

Identity system · Multi-brand

Mattel Login

One auth system, every Mattel brand.

A component architecture that themes itself from Hot Wheels to Fisher-Price without forking.

Case study soon
Mattel Login themed across Hot Wheels, Fisher-Price, and Mattel Creations
05

IoT · Bluetooth · Fisher-Price

Smart Connect

Nursery hardware for exhausted parents at 3am.

Glanceable state, forgiving controls, zero tolerance for pairing failure.

Case study soon
Fisher-Price Smart Connect app controlling the Luminate Bassinet