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I'm Justin Chai.

Consumer product designer with 9+ years turning ambiguous problems into scalable products. Grounded in research and entrepreneurship, I use AI and code to prototype and validate ideas.

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I'm Justin Chai.

I'm Justin Chai.

I'm Justin Chai.

View the full case studies on a laptop or desktop.

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2024 - 2025

Transforming a high-touch affiliate program into a scalable growth system.

Designed a self-serve experience for affiliates to join, earn, and grow.

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2024

Introducing Global+ marketplace without disrupting the familiar shopping experience.

Designed the end-to-end marketplace experience across discovery, storefront, cart, and checkout.

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2023

Top Charts — Turning endless browsing into confident decisions.

Designed a ranking experience to help shoppers discover trusted products and choose with confidence.

2021

Making music more social with Group Playlists.

Designed a collaborative playlist experience for friends to build, share, and listen together.

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