I'm Soyun, a product designer with over five years of experience designing products within real-world constraints while delivering impactful, user-centered experiences at a global scale.
Previously at LINE, I led UX design for a digital banking platform built on LINE Messenger, a global social platform with over 200M users, supporting financial management across four countries. I also worked on large-scale consumer features for LINE & Yahoo! Japan's premium membership and LINE AI Assistant.
Currently based in Seattle, I'm pursuing M.S. in Human-Centered Design & Engineering at the University of Washington, where I’m deepening my practice in research-driven and AI-focused design.
A bit more about me :)
Experience
University of Washington
Graduate Research Assistant
2025 - 2025
Co-authored a research paper and designed a AI Concept Envisioning Toolkit offering scaffolding to help designers identify potential harms and align AI concepts with human values early on.
OneCo
UX/UI Designer
2025 - 2025
Enhanced enterprise onboarding for a B2B financial and HR platform by enabling data autosave to improve conversion, while reducing bugs by 30% through iterative QA.
LINE Plus
Product Designer
2019 - 2024
Led product design across digital banking and premium features, shaping experiences used by millions across multiple markets, while driving measurable business impact at scale.
XnTree London
Visual Designer
2017 - 2018
Translated complex startup technologies into compelling pitch-deck visuals aligned with business goals.
Education
University of Washington
M.S. in Human Centered Design & Engineering
2026 (Expected)
Chung-Ang University
B.S. in Media Communication
B.E. in Digital Imaging Engineering
2019
Toolbox
Figma
Product & system design
Figma Make
Interactive prototyping
ChatGPT
Concept exploration
Claude
PRD drafting & prototyping
Cursor
Vibe coding
Vercel
Deployment
Visual assets
Jira
Product collaboration
& more!