Byoungchan Lee
Software Developer at Hyperconnect
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolByoungchan Lee is a software developer based in Seoul with a decade of engineering experience and seven years focused on systems, multimedia, WebRTC, mobile, and machine learning. He has deep C++ and Unix/Linux expertise and a track record of improving real-time communication stacks and advising teams on high-quality WebRTC mobile apps at Hyperconnect. Earlier work at ESTsoft combined system-level C++ development, backend services in C++/Python/Go, and applied NLP using CNNs. Active in open source, he has contributed to high-profile projects including the Chromium WebRTC tree and the Flutter engine, fixing platform-specific rendering issues and strengthening build and stats subsystems. Collected skills span low-level performance work, cross-platform multimedia, and pragmatic engineering that "fixes code he uses"—a habit that surfaces in targeted, maintainable contributions. His mathematics background from KAIST underpins a methodical approach to complex engineering problems.
10 years of coding experience
4 years of employment as a software developer
학사, Mathematics, 학사, Mathematics at 한국과학기술원(KAIST)
Github Skills (18)
ios10
c-language10
mobile-development10
flutter-apps10
cross-platform10
darwin10
flutter-game10
dart10
webrtc10
cprogramming-language10
flutter10
android9
macos8
linux8
testing7
Programming languages (27)
Github contributions (5)
flutter/flutter
Mar 2019 - Mar 2025
Flutter makes it easy and fast to build beautiful apps for mobile and beyond
Role in this project:
Mobile Developer
Mobile DeveloperContributions:4 reviews, 4 PRs, 49 comments in 6 years 1 month
Contributions summary:Byoungchan contributed to the Flutter framework by addressing issues related to pixel format handling on Darwin platforms. They also added support for fetching refresh rates on the Linux platform, enhancing the functionality of the engine. Furthermore, they made improvements to the build process by replacing NSAssert with FML_CHECK/DCHECK, ensuring a more robust build process. Additionally, they improved test determinism for the clangd check.
skiaiosmobilemobile-gamemacos
JumpingYang001/webrtc
Apr 2021 - May 2021
webrtc source code from https://chromium.googlesource.com/external/webrtc
Role in this project:Back-end Developer
Back-end DeveloperContributions:11 commits in 1 month
Contributions summary:Byoungchan primarily contributed to the WebRTC project by addressing build warnings and implementing support for features within the project's stats collection system. They added explicit copy constructors and assignment operators, removed unused code definitions, and supported map-based data structures for storing statistical information. The user also fixed a typo in a comment, updated a testing file, and populated qualityLimitationDurations stats.
websocketwebrtcchromium
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