Builder.

Hi, I'm Sage (Seunghyun) Lee, an AI-native builder who doesn't stop at design. I shape the strategy, prototype it fast, and ship the features too. 3+ years of making ideas real.

Open for new work
What do you see?
Medicai · Cutting onboarding friction for medical imaging SaaS
SaaS Onboarding Healthcare
Dale UI · Building components for a Korean design system
Systems Thinking Accessibility
Experience
Advanced AI Data Trainer · Invisible Technologies · 2024 — 2025
Product Designer · Atta Systems · 2023
UX Researcher · Hankook Research · 2022
Program Manager · Gabia · 2021 — 2022
UX Design Assistant · Boston Consulting Group · 2021
About

I love to travel, and I live for music and film. Above all, I want to design things that leave a good mark on the people who use them.

TOSS THEM · HOVER FOR A FUN FACT
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Shot on 35mm
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