Jeeeyul Lee is a seasoned software engineer and research leader with 13 years of professional experience and roughly 30 years of programming practice that began in childhood. As Chief Research Engineer at Tomato System, he designs and builds compilers, code editors, debuggers and WYSIWYG tools for Eclipse and VSCode, blending deep tooling expertise with practical product delivery. He maintains active ties to the Korean developer community as operator of eclipse.or.kr and runs an independent iOS app venture, Kakoong Lab. An open-source contributor, he added Korean localization and meridiem parsing to the widely used moment.js library—demonstrating attention to internationalization and testing. Grounded in a Computer Science degree from Andong National University, Jeeeyul pairs long-term hands-on craft with research-minded system design.
13 years of coding experience
공학사, Computer Science, 공학사, Computer Science at Andong National University
Parse, validate, manipulate, and display dates in javascript.
Role in this project:
Localization / Internationalization Specialist
Contributions:6 commits in 2 days
Contributions summary:Jeeeyul primarily focused on adding Korean language support to the `moment/moment` library. Their contributions involved implementing meridiem parsing for Korean, adding test cases to validate the functionality, and fixing test failures. The user also addressed code style issues and removed unnecessary flags from the code.
Contributions:126 commits, 6 pushes in 8 years 3 months
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Jeeeyul Lee - Chief Research Engineer at eclipse.or.kr