DongsikΒ Yoo
CEO And Founding Member at ZIONEX
Seoul, South Korea
Summary
π€©
Rockstarπ
Top SchoolDongsik Yoo is a seasoned technology entrepreneur and CEO with nine years of hands-on engineering experience and a Ph.D. in Engineering from MIT. As a founding member of ZIONEX in Seoul, he blends strategic leadership with practical product development, particularly in front-end user experiences. His open-source contributions include enhancing the popular nhn/tui.image-editor with new image filters and UI fixes, reflecting a strong eye for UX and media-processing features. Trained originally at Seoul National University, he combines deep academic grounding with startup pragmatism to turn complex image and interface challenges into polished, user-friendly solutions. Colleagues describe him as a leader who still prefers to ship code himself when it matters.
9 years of coding experience
bachelor, Engineering, bachelor, Engineering at Seoul National UniversityPh.D., Engineering, Ph.D., Engineering at Massachusetts Institute of Technology
Github Skills (6)
filtering10
javascript10
image-editor10
filter10
drawing10
canvas10
Programming languages (6)
Github contributions (5)
nhn/tui.image-editor
Apr 2017 - Dec 2018
ππ¨ Full-featured photo image editor using canvas. It is really easy, and it comes with great filters.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:3 releases, 22 reviews, 36 commits in 1 year 8 months
Contributions summary:Dongsik primarily focused on enhancing the image editor's functionality by adding new image filter features. They implemented various image filters and related APIs, including color filters, and integrated these into the user interface. The user also modified the example code to demonstrate and test the new filter options. Furthermore, the user addressed UI issues like stopping the drawing mode when necessary.
filterfull-featuredimagefilterscanvas
nhn/toast-ui.date
Jan 2020 - Jul 2020
Contributions:23 commits, 5 PRs, 12 pushes in 5 months
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