Junggun Lim
Software Engineer at Epic Games
California, United States
Summary
👤
Senior🎓
Top SchoolJunggun Lim is a seasoned software engineer with 11 years of experience building real-time facial motion capture and scalable backend systems, now applying that expertise at Epic Games. He led BinaryFace as a director and VP, shipping cross-platform SDKs for facial landmark, eye and tongue tracking and optimizing compact deep-learning models for mobile and Unity. His background spans large-scale game analytics, devops and streaming systems at companies like NCSoft and Devsisters, plus hands-on imaging and mobile work from earlier roles. Known for obsessing over pipeline efficiency—whether orchestrating humans, data annotation, or compact ML models—he blends research-caliber thinking from KAIST with pragmatic production engineering. An under-the-radar strength is his end-to-end ownership: from data collection and model training to packaging SDKs and platform integrations.
11 years of coding experience
12 years of employment as a software developer
Seoul Science High SchoolBachelor of Science (B.S.), Computer Science, Bachelor of Science (B.S.), Computer Science at Korea Advanced Institute of Science and Technology
English, Korean
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (85)
swift10
typescript10
caf10
macos10
objective-c10
ios10
cordova10
javascript9
browser9
database9
postgresql9
sap9
databases9
react-native9
pattern-matching9
Programming languages (5)
Github contributions (5)
j6lim/DefinitelyTyped
Feb 2016 - Feb 2016
Contributions:6 pushes, 2 branches in 7 days
type-definitionshigh-qualitydefinitionstypescriptquality
hyprsense/libdshowcapture
Jan 2020 - May 2020
Free and Open Source C++11 Library for capturing DirectShow video/audio devices on windows.
Contributions:1 push, 3 branches in 3 months
audio-videocapturingcppwindowsc-plus-plus
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