Sang Yeo
Designer. Builder. Problem solver.
19+ years designing end-to-end product experiences — most recently owning Places and Measurement / Attribution at Foursquare.
About
I'm a designer and builder who loves designing experiences that matter — especially enterprise-level developer and data tools — with 19+ years of experience.
When I'm not designing, I'm posting food photos (@sangster_food) or mountain biking East Bay trails. I have an ultra-runner wife, two kids, two cats, a dog, and a house in Orinda, CA.
Philosophy
How I work
Start with the customer, ask the right questions, share early, and validate in the wild.
How I build
Design seamless experiences and scalable patterns — guided by strong design thinking, open to new tools.
How I lead
Trust and listen, lead by example, foster collaboration, and develop talent.
Design Process
Over the past 9 months, I've used Cursor to dramatically shorten the distance between an idea → a working product → real user feedback.
01Frame
Understand the problem and define the outcome
02Explore
Use AI tools (Cursor & Gemini) to generate possible directions
03Build
Create a working prototype
04Test
Test with internal and/or external customers
05Learn
Refine, change, or stop
Outcomes
- Working prototypes, not just click-through mocks.
- Design handoff is a GitHub repo, not a Figma file.
- A tighter connection between design and engineering.
- Faster iteration, earlier user feedback, and significant time savings.
Career
Design and product leadership across location data, infrastructure, fintech, and communications.
Oct 2024 – Present
Foursquare
Principal Product Designer
Location Data·San Francisco, CA
Nov 2023 – Jun 2024
thirdweb
Head of Product Design
Web3 Infrastructure·San Francisco, CA
Nov 2022 – Aug 2023
PayPal
Head of UX
Fintech·Remote
Nov 2018 – Nov 2022
Twilio
Staff, Product Design
Cloud Communications·San Francisco, CA
Jun 2018 – Nov 2018
Keap
Principal UX Designer
CRM & Automation·San Francisco, CA / Phoenix, AZ
Aug 2016 – May 2018
SAP
UX Design Manager
Enterprise Software·Palo Alto, CA
Earlier: Complete Solar, Z-line Design, Museum of Fine Arts, Boston.