Consulting

My work focuses on networking, security and performance as transverse aspects of your software stack. This means that you can call me for the weird bugs spanning multiple systems, for the plans of complex, scalable architectures, or when you just need a cool hack to push software past its limits.

Contact me: email:

Find me at:

• Blog: Unhandled Expression
• Twitter: @gcouprie
• Github: Geal

Public speaking

I give talks on various topics:

• Ne jetons pas le bébé avec l'auth du bain ! (MixIt 2024) with Clément Delafargue

• Comprendre GraphQL (Devoxx France 2023) with Guillaume Scheibel

• Safe and fast parsers with Nom and Rust (StrangeLoop 2015)

• Parsing safely, from 500MB/S to 2GB/s (Code Mesh LDN 2018)

• Integrating Some Rust in VLC Media Player (RustConf 2016)

• Rewrite the web with Rust and Web Assembly (Voxxed Days Luxembourg 2018)

• Writing parsers like it is 2017 (IEEE S&P LangSec Workshop 2017)

• Pulsar unikernel FaaS, the new Pulsar functions runners? (Pulsar Summit 2020)

• Techniques modernes pour l'écriture de serveurs performants (Devoxx France 2017)

• Sōzu, a hot reconfigurable reverse HTTP proxy (Devoxx France 2017)

• Replacing core infrastructure without disrupting the community (FSCONS 2017)

• Macromancy: an introduction to Rust macros (RustFest Zürich 2017)

• Rust as a support language (Devoxx Belgium 2016)

• Nom, a Byte-oriented, Streaming, Zero-copy Parser Combinators Library in Rust (IEEE S&P LangSec Workshop 2015)