Semi Koh
Frontend Engineer
Work Experience
NHN Injeinc
Mar 2025 ~ Present
Tech Development Office
TicketLink Japan Service
- Sole frontend developer for the Japan ticket-application/draw admin system
TicketLink Global Site Renewal
- Applied i18n in a mixed JSP/AngularJS·React environment
TMAX GAIA
Sep 2023 ~ Mar 2025
GA2-2-2
GAIA Docs
- Web-based office product with features comparable to Google Docs (canvas-based) / Sheets / Slides
- Compatible with MS Office and HWP document formats, supports real-time multi-user collaborative editing
- Architecture based on Event-driven Architecture + Command Pattern
Responsibilities
- Owned the text-related common features shared by the Word / PowerPoint / Excel modules
- Stabilized and maintained caret/selection, copy & paste, styling, collaborative editing, and save features in the text module
Jaeneung Education / Jaeneung e-Academy
Jan 2017 ~ Aug 2022
Math Content Team
Jaeneung AI Math
- Learner-centered program that delivers optimal math content to each learner
Open Source
Node.js
- —base64 benchmark input was structured incorrectly, so the actual decoding path wasn't measured and threw an error#60841
- —Inspector help URL pointed to the wrong path, producing a dead link#62745
- —Crashed in GetErrorSource() when parsing a malformed using statement#62770
- —A DynamicLibrary with live references was collected by GC too early, causing a crash#63024
Mantine
- —Badge's circle prop was overridden by defaultProps.radius, so it didn't render as a circle#8466
- —TypeScript autocomplete wasn't working on path arguments of form methods like clearFieldError#8810
- —Missing Styles API documentation data for the Scroller component#8818
- —RichTextEditor: caret not visible in an empty task-list item#8821
- —SemiCircleProgress component wasn't rendering#8842
- —ScrollArea scrollbars didn't appear when offsetScrollbars="present"#8844