Jean-baptiste Kempf
Founder And CEO at Kyber
Paris, Ile-de-France
Summary
🤩
Rockstar🎓
Top SchoolJean-Baptiste Kempf is a founder, CEO and technology leader with 19 years of experience building high-performance video and cloud systems, best known as a lead developer of VLC Media Player and President of the VideoLAN non-profit behind that 5+ billion download project. He has founded and scaled multiple bootstrapped companies—VideoLabs, Kyber and Playruo—delivering low-latency streaming, cloud gaming and remote-control infrastructure used by Meta, Google, Netflix and others. A hands-on engineer with deep roots in open source (VLC, FFmpeg, dav1d) and low-level HPC work, he bridges chip-to-cloud expertise including codec development, platform portability fixes and real-time SDKs. Jean-Baptiste pairs product and organizational leadership—having led large engineering organizations and audited teams for VCs—with a persistent ethic of sustainability and team well-being. Notably, his contributions include platform-specific portability fixes (Windows/Android) to core libs and a patent-pending ultra-low-latency streaming approach that targets robotics, telemedicine and cloud gaming. Based in Paris, he continues to steer deep-tech ventures that push technical limits while keeping open-source principles central.
19 years of coding experience
15 years of employment as a software developer
IT, IT at CentraleSupélecPCSI-PSI*, PCSI-PSI* at Lycée Janson-de-SaillyMaster in Research, Computer Science, Master in Research, Computer Science at Paris-Sud University (Paris XI)Baccalauréat, Scientifique, Baccalauréat, Scientifique at Lycée Henri IV
English, French, Italian, German, Japanese
Github Skills (24)
debugging10
compatible10
debug10
compile-time10
multiplatform10
compilation10
wp-api10
cross-platform10
c1110
winapi10
c1710
compatibility10
compile10
compiler10
ws-api10
Programming languages (18)
Github contributions (5)
videolan/vlc
Nov 2017 - Dec 2022
VLC media player - All pull requests are ignored, please use MRs on https://code.videolan.org/videolan/vlc
Role in this project:
Back-end Developer
Back-end DeveloperContributions:261 commits, 28 PRs, 35 comments in 5 years 1 month
Contributions summary:Jean-baptiste's commits primarily focused on code improvements and bug fixes within the VLC media player's codebase. They updated external libraries like fluidlite and protobuf. A significant amount of the commits dealt with addressing compilation issues across different operating systems (macOS, Windows, and Android) and architectures. They also addressed incorrect function calls, formatting problems, and other bug fixes within the core code.
gplv2libvlcfollowframeworkvlc
sahlberg/libnfs
Jan 2016 - Mar 2016
NFS client library
Role in this project:Back-end Developer
Back-end DeveloperContributions:12 commits, 4 PRs, 7 comments in 2 months
Contributions summary:Jean-baptiste primarily focused on adapting the `libnfs` library for compatibility with different platforms, particularly Windows (Win32) and Android. Their work involved modifying header inclusions, defining platform-specific macros, and implementing missing functions, such as `mingw_gettimeofday`, to ensure the library functions correctly across various environments. They addressed issues related to structure declarations and conditional compilation to resolve platform-specific issues. Furthermore, they made adjustments to the code related to Android by redefining `statvfs` as `statfs`.
nftclient-librarynfsnfs-client
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