Donghyun Koo
Frontend Engineer at 당근
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolDonghyun Koo is a seasoned frontend leader with a decade of experience delivering scalable web interfaces and a deep commitment to continuous improvement. As Team Lead at Danggeun and a Frontend Engineer at Danggeun Market, he guides the used-car product team and ships performant, responsive UI using React and Redux. His background includes NAVER's blog and video editing tooling and Konolabs' scheduling bot admin pages, illustrating versatility across consumer platforms and internal tooling. He places a strong emphasis on page performance optimization and thoughtful cross-browser compatibility, including legacy IE9 support when needed. Based in Seoul and educated in computer science at Korea University, he pairs hands-on engineering with leadership to drive collaborative, high-impact work.
10 years of coding experience
5 years of employment as a software developer
학사, 컴퓨터 공학(소프트웨어), 3.08/4.5, 학사, 컴퓨터 공학(소프트웨어), 3.08/4.5 at 고려대학교
Korean, English
Stackoverflow
13reputation
6kreached
0answers
1question
Github Skills (65)
webview10
stack10
react-hooks10
multi-touch10
navigator10
redux10
plugin10
snap9
gestures9
sdk9
rotate9
javascript-client9
drag-and-drop9
react9
snapping9
Programming languages (2)
Github contributions (5)
AlwaysAwake/AlwaysAwake
Jun 2022 - Apr 2025
Contributions:493 pushes, 1 branch, 1 issue in 2 years 10 months
AlwaysAwake/golm-web
Aug 2016 - Aug 2016
Contributions:52 pushes, 1 branch in 1 day
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