Hi, I'm Yu. I design products that make complex things feel simple.

I care about systems thinking and asking the right questions. I use quick AI prototypes to test ideas early, and turn messy problems into products people trust.

At PayPay in Tokyo, I make paying and managing money easy for 65M+ users, even when the rules behind it are not. Before that, I worked on growth and engagement at Carousell in Taiwan and Singapore.

Outside work, I mentor designers at AAPD and build small tools with code and AI.

Work

PayPay

I lead design for how money gets in and out of the wallet, from top-ups to ATMs to card payments.

Carousell

I designed sign-up and notifications, plus the marketing tools and design system behind them.

Tools I build

What people I've worked with say

Ryan was a key team member during my time at PayPay, where he consistently delivered high-quality designs across multiple projects. He also contributed to Design Ops by improving QA processes and accessibility.
Ryan is my team member at AAPD, where we teach Figma and UI design. He began as a teaching assistant and quickly advanced to an instructor role, demonstrating strong learning ability, attention to detail, and clear communication.
Ryan was a valued team member who independently led several challenging projects with unclear requirements. He brought clarity through thorough research and tackled problems with patience and a methodical approach.
Ryan was a former colleague at Carousell, and I was always impressed by his ability to balance user needs with business goals to deliver practical, thoughtful designs.
When design and development misaligned, he calmly found practical solutions with the team. His suggestions for bug fixes and optimizations boosted both product quality and team efficiency.

Ryan was a key team member during my time at PayPay, where he consistently delivered high-quality designs across multiple projects. He also contributed to Design Ops by improving QA processes and accessibility.