QUAT : Korea’s #1 home fitness app (Jun 2021 - Current)- Championed 0-to-1 commerce MVP through iterative testing and stakeholder collaboration. Achieved 6.8% higher conversion rates, contributing to 250% revenue increase- Led 0-to-1 design for core operational tools including seller promotion creation, delivery tracking dashboard, and customer management admin portal, improving operational efficiency and reducing administrative costs- Spearheaded end-to-end subscription funnel optimization through A/B testing and iteration- Led end-to-end payment experience redesign, resulting in 20% higher completion rate and 16% increase in conversionWIPPY : Korea’s #1 dating app (Aug 2020 - Jun 2021)- Spearheaded WIPPY home redesign, boosting new user engagement rate and inter-user interactions through two-phase A/B testing- Organized and facilitated multiple workshops to secure stakeholder buy-in and initiate projects, fostering cross-functional collaboration- Drove migration from Sketch to Figma and championed Protopie adoption for high-fidelity prototyping, upskilling team and enhancing design workflow

- Designed and delivered 28 lectures on UX strategy and user research to 500+ participants- Mentored 100+ junior designers for 250+ hours, guiding end-to-end project execution and strategic thinking

Elice : Korea’s #1 B2B AI education and training platform- Led information architecture redesign for B2B pivot, contributing to 1.5x revenue growth- Pioneered unified brand illustration and content guide systems across 4 product lines, reducing design inconsistencies and accelerating asset creation time

- Embedded with Lotte Solution Research Team as a co-op member to develop differentiation strategy for LERNI, a B2B event support platform- Championed winning idea in team competition, driving its integration into beta service launch- Revamped user flow through comprehensive research and iterative design sprints, crafting prototypes that streamlined stakeholder communication and accelerated project momentum

- Contributed to confidential products for Korea's leading companies across automotive, telecommunications, steel manufacturing, and consumer electronics sectors- Designed and developed UI components, design systems, icon libraries, and created high-fidelity presentations for stakeholders