Cha
Lead Software Engineer at 아프스
Seoul, South Korea
Summary
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RockstarCha is a Lead Software Engineer based in Seoul with 13 years of experience delivering product-focused software across gaming, medical, and research environments. Currently leading engineering at 아프스 since 2019, Cha blends hands-on development with team leadership and operational experience from prior roles including COO and senior engineer positions. A practical full-stack contributor, Cha has improved macOS Korean input tooling and enhanced cross-platform compatibility for JetBrains IDEs and Chromium browsers, showing attention to developer experience and internationalization. Open-source work includes meaningful contributions to the wand ImageMagick Python bindings—adding font-metric queries, cross-OS tests, and captioning features—demonstrating a knack for bridging native libraries and high-level APIs. Known for refactoring legacy code and fixing nuanced input-method bugs, Cha brings a mix of product sensibility and low-level systems problem solving.
13 years of coding experience
4 years of employment as a software developer
Github Skills (15)
ctypes10
swift10
macos10
imagemagick10
python10
wand10
api-design9
locale9
localized9
localization9
configuration-management9
localize9
user-interface8
interface-design8
ui-design8
Programming languages (8)
Github contributions (5)
emcconville/wand
Nov 2012 - Sep 2014
The ctypes-based simple ImageMagick binding for Python
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:9 commits in 1 year 10 months
Contributions summary:Cha implemented new functionality for querying font metrics within the `wand` library, adding methods to the `Drawing` class and integrating these changes with the `wand/api.py` module to interface with the underlying ImageMagick library. The user wrote tests to validate the functionality, including adjustments to support multiple operating systems. Furthermore, the user addressed a bug related to image properties and implemented a caption feature allowing for word-wrapped text output within images.
ctypesimagemagickpythonwand
gureum/gureum
Nov 2022 - Nov 2022
더 편리한 macOS 한글 입력기
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:2 reviews, 7 commits, 4 PRs in 1 day
Contributions summary:Cha primarily focused on enhancing the functionality and compatibility of a macOS Korean input method. They implemented features for compatibility with Jetbrains IDEs and Chromium-based browsers. Additionally, the user refactored code, addressed bug fixes related to deferred symbol commits, and improved overall code formatting. The user also modified preference settings and configuration files related to the input method's behavior.
macos
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