Frontend Developer specializing in scalable web applications and UI engineering.
I value collaboration, practical problem-solving, and building great products with great teams.

• KB Data Systems | Frontend Developer (2022.09 ~ )
• PetFriends | Frontend Developer (2021.12 ~ 2022.08)
• Douzone Bizon | Frontend Developer (2019.10 ~ 2021.02)
• Fusiondata | Software Developer (2018.08 ~ 2019.09)

Contributor to react-day-picker, a lightweight and customizable date selection library for React.

Widely adopted and used as the underlying engine for the Calendar component in shadcn/ui — providing core date logic while the UI layer is styled through the shadcn system.

Notable Contribution:
I identified and reported a bug related to nested Date[] matchers not being applied correctly in react-day-picker.
After analyzing the cause, I proposed the correct handling approach in the issue discussion, and my solution was adopted and merged by the maintainer:

• Issue: gpbl/react-day-picker#2864
• PR reflecting my solution: gpbl/react-day-picker#2865

Contributor to @toss/es-toolkit, a modern JavaScript/TypeScript utility toolkit designed for reliability, consistency, and predictable behavior across web applications.

• toss/es-toolkit