Olivier Langlois
President at Montreal C++ Professionals group - LinkedIn
Montreal, Quebec, Canada
Summary
👤
Senior🎓
Top SchoolOlivier Langlois is a seasoned C++ and Linux systems engineer with over three decades of software development experience and 13 years of professional experience driving high-performance networked systems and real-time media solutions. As President of Trillion01 and creator of open-source tools like glcs, he blends low-level systems work (ALSA, ffmpeg, VAAPI, pthreads) with algorithmic trading and digital marketing for practical product outcomes. His career includes scaling streaming infrastructure to serve hundreds of thousands of concurrent feeds and delivering 20x capacity improvements at StreamTheWorld, as well as performance optimizations and memory debugging that cut server costs and improved throughput at Morgan Stanley and Ericsson. An active contributor to the widely used libwebsockets project, he focuses on platform-specific optimizations and efficient IPC (eventfd) and IOURING checks to squeeze performance from Unix-like systems. Based in Montreal, he also founded and manages a thriving local C++ professionals group of ~1,000 members, reflecting his commitment to community mentorship and knowledge sharing.
13 years of coding experience
15 years of employment as a software developer
Bac, Electrical engineering, Bac, Electrical engineering at École de technologie supérieureDEC, Electronic engineering technology, DEC, Electronic engineering technology at CEGEP Lionel-Groulx
French, English
Github Skills (8)
c1710
libev10
c-library10
websocket10
unix10
c1110
client-server9
linux9
Programming languages (7)
Github contributions (5)
warmcat/libwebsockets
Dec 2019 - Feb 2020
canonical libwebsockets.org networking library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 commits in 2 months
Contributions summary:Olivier contributed to the `libwebsockets` library, focusing on platform-specific adaptations and optimizations. Their work involved refactoring the code to utilize `eventfd` for inter-process communication on Unix-like systems, improving efficiency. They also added logging information for the AIO backend in the `libev` event library and checked for the presence of IOURING to enhance performance. Furthermore, the user addressed potential issues related to extensions and buffer size during logging.
client-serverlwslibevlibuvendpoint
lano1106/glcs
Dec 2013 - Apr 2015
Contributions:38 commits, 2 PRs, 2 pushes in 1 year 3 months
alsalinuxstreamingopenglstreaming-tool
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