Jw Lee

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Summary

🤩

Rockstar

Joonghee Lee is a Senior Software Developer with 8 years of focused experience and a broader 15+ year engineering background spanning network security, embedded drivers, and front-end web tooling. Currently at NHN Cloud, he blends deep systems knowledge from roles at AhnLab (DPDK-based network stacks and Linux kernel drivers) with modern front-end craftsmanship contributing to popular open-source projects like NHN's tui.editor, tui.chart, and tui.calendar. His OSS work emphasizes robust UI behavior, test infrastructure, Vue integrations, and security hardening (DOMPurify/XSS fixes), showing attention to both developer ergonomics and safe user-facing features. He holds a master's in Computer Software Engineering from Sungkyunkwan University and has moved between low-level networking and high-quality front-end delivery, a combination that helps him reason end-to-end about performance and reliability. Colleagues describe him as a pragmatic problem-solver who surfaces subtle bugs (e.g., chart selection and editor keymap edge cases) and turns them into well-tested features.

8 years of coding experience

Github Skills (30)

data-visualizations10

editors10

javascript10

visualization10

canvas10

calendars10

testing10

charts10

typescript10

data-visualisation10

templater10

template-engine10

editor10

charting10

dompurify10

Programming languages (3)

TypeScriptJavaScriptHTML

Github contributions (5)

nhn/tui.chart

Jul 2021 - Dec 2022

🍞📊 Beautiful chart for data visualization.

Role in this project:

Front-end Developer

Contributions:6 releases, 10 reviews, 46 commits in 1 year 5 months

Contributions summary:Jw primarily contributed to the front-end of the data visualization library. They fixed data label and chart option issues, updated and added stories for better demonstration. They also added and modified functionalities like range selection and selectable series. Furthermore, they contributed to enhancing the Vue wrapper, including adding range selection interfaces and fixing related bugs.

chartsreactchartcanvasdata-visualization

nhn/tui.editor

Feb 2022 - Sep 2022

🍞📝 Markdown WYSIWYG Editor. GFM Standard + Chart & UML Extensible.

Role in this project:

Front-end Developer

Contributions:3 releases, 51 reviews, 62 commits in 7 months

Contributions summary:Jw primarily contributed to the front-end aspects of the Markdown WYSIWYG editor. Their work involved updating and refining integration tests for the layout component, ensuring the correct display and behavior of UI elements like editor modes and preview styles. They also worked on expanding the plugin interface, adding features like disabledEntityParse and keymap integration, and updating the editor version. These changes focused on improving the editor's functionality and testing infrastructure.

umldesignerwysiwyg-editorjquery-pluginmarkdown

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