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Product Designer
(UI/UX)

Hola,

I'm Justin Chai.

Product designer with 9+ years in consumer-facing products, specializing in user growth, core experiences, and marketplace optimization. Skilled in system-level thinking and delivering impactful mobile and web solutions at scale.

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Products, Platforms & Impact

A selection of initiatives I’ve led to scale consumer experiences, strengthen product ecosystems, and drive growth.

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SUMMARY

Remove barriers with compliant, inclusive flows that expand who can successfully transact.

PROJECTS:

SNAP EBT integration · Eligibility/onboarding guidance · Regulated checkout UX

Designing
access

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SUMMARY

Build scalable growth loops—turning discovery, incentives, and partner channels into repeatable acquisition.

PROJECTS:

Affiliate program revamp (portal + commissions + auto-recruit) · TopX ranking/badging · Conversion-focused PDP · New user onboarding

Designing
a growth engine

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SUMMARY

Design habit-forming experiences that increase repeat purchases through clarity, reliability, and subscription value.

PROJECTS:

Subscribe & Save program · Post-purchase improvements · Order & delivery lifecycle UX

Designing
retention

Designing trust at scale.jpg

SUMMARY

Make marketplace decisions feel safe and transparent with clear pricing, delivery expectations, and quality signals.

PROJECTS:

Pricing & fee clarity · Delivery/ETA transparency · Quality signals/badges · Policy/terms messaging

Designing
trust at scale

Designing Platform-Level Solutions for product.jpg

SUMMARY

Create reusable systems that scale across teams, surfaces, and markets—reducing one-off design and increasing leverage.

PROJECTS:

Affiliate platform (multi-role workflows) · Cross-market marketplace frameworks · Partner/payment integrations · Design system alignment

Designing Platform-Level Solutions

Evolving the Core user journey Experience.jpg

SUMMARY

Continuously refine the highest-traffic flows—improving discoverability, usability, and end-to-end efficiency.

PROJECTS:

Homepage/discovery UX · PDP information hierarchy · Checkout optimization · Navigation/IA updates

Evolving the
Core Experience

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Things i love

I focus on designing systems that make products more inclusive, scalable, and resilient over time. I’m driven by work that connects product strategy with real user impact.

Outside of work, I enjoy keeping a planted aquarium, spending time with my cat, and exploring art and exhibitions—interests that continually influence how I think about detail, atmosphere, and human experience in design.

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Affiliate Program Revamp

Driving more affiliate sharing and earnings

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"Global+" Build

Expand assortment, meet diverse needs, drive growth

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TOP X

Speed up decisions and expand SKU discovery.

Design Method

My approach blends product strategy, systems thinking, and refined craft to create intuitive, scalable experiences across web and mobile ecosystems.

DESIGN

Interaction design
Visual design
Design systems
Product strategy
Product growth
Prototyping
Wireframe
Accessibility
Collaboration
Sprints and workshops

RESEARCH

User interview
Contextual inquiry
Heuristic evaluation
Competitive analysis
Usability testing
Focus group
Filed observation
Design sprint

 

TOOLS

Pencil and paper
Figma
AI Tools
Google flow
Adobe Photoshop
Adobe Illustrator
Cursor
Framer
Webflow

PLATFORMS

APP
Desktop web
Mobile web

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