Damien Claisse
Staff Site Reliability Engineer at Criteo
Pantin, Île-de-France, France
Summary
👤
Senior🎓
Top SchoolDamien Claisse is a Staff Site Reliability Engineer based in Pantin with over a decade building highly available, scalable infrastructure and automation at companies like Criteo. He brings deep systems and networking expertise across Debian/CentOS, LAMP, nginx/php-fpm, layer 3–7 load balancing, dynamic routing and infrastructure automation, and is fluent in bash, C/C++ and Python. Damien has a practical track record of improving runtime behavior—his open-source contributions to HAProxy added sub-second HTTP date precision and fixed dynamic server cookie and slowstart issues—showing attention to subtle, production-impacting details. Known for questioning standard approaches, he combines hands-on debugging with architecture-level thinking to harden and scale complex services.
10 years of coding experience
3 years of employment as a software developer
EPITA
French, English
Github Skills (7)
c1710
http10
load-balancer10
c1110
reverse-proxy9
high-performance9
proxy9
Programming languages (8)
Github contributions (5)
haproxy/haproxy
Aug 2024 - Sep 2024
HAProxy Load Balancer's development branch (mirror of git.haproxy.org)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 comments in 14 days
Contributions summary:Damien contributed to the HAProxy load balancer's codebase by implementing features related to timestamp formatting, specifically adding support for sub-second precision in HTTP date conversions and date sampling. They addressed a bug in dynamic server cookie handling, ensuring that servers added through CLI received the correct persistence cookie. Furthermore, the user fixed slowstart behavior for servers, and allowed init-state for dynamic servers.
proxycachingddos-mitigationhttp2ipv6
criteo/ipam-client
Jan 2018 - Dec 2020
Python ipam-client library
Contributions:13 releases, 23 commits, 40 PRs in 2 years 11 months
client-libraryipampythonpython3
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