Guillaume Fournier
Staff Security Engineer at Datadog
Paris, Ile-de-France
Summary
🤩
Rockstar🎓
Top SchoolGuillaume Fournier is a Staff Security Engineer at Datadog with six years of hands-on experience building runtime and cloud workload security products powered by eBPF. He led the design and implementation of Datadog’s Cloud Workload Security agent—shipping File Integrity Monitoring and Process Execution Monitoring—and contributed core runtime security features to the widely used datadog-agent open-source repo. Comfortable bridging low-level Linux observability and product-grade backend systems, he has presented research and tools like ssh-probe at SSTIC and spoken about eBPF risks at Black Hat and DEF CON. His background combines formal engineering training from CentraleSupélec with practical work across CI/CD, container scanning, and multi-cloud alerting pipelines. Notably, he transitioned a research proof-of-concept into a GA security product while anticipating how eBPF can be both a defensive boon and an attack surface. Based in Paris, he pairs deep technical curiosity with a track record of turning security research into scalable production features.
6 years of coding experience
9 years of employment as a software developer
Digital Tech YearMaster of Engineering - Computer Science, Master of Engineering - Computer Science at CentraleSupélecBaccalaureate with honors for scientific studies, Baccalaureate with honors for scientific studies at Saint Louis de Gonzague-FranklinMPSI - MP*, MPSI - MP* at Lycée Sainte-Geneviève
English, German, French
Github Skills (10)
it-security10
go10
containerization10
ebpf10
system-monitoring10
security9
metric9
distributed-tracing8
apm-agent7
observability7
Programming languages (6)
Github contributions (5)
DataDog/datadog-agent
May 2020 - Jan 2023
Main repository for Datadog Agent
Role in this project:
Back-end & Security Engineer
Back-end & Security EngineerContributions:714 reviews, 354 commits, 385 PRs in 2 years 8 months
Contributions summary:Guillaume contributed to the runtime security module of the Datadog Agent, implementing and modifying code related to system-level security monitoring. Their work included updating and improving metrics related to runtime security, such as CPU usage, and container security. They also focused on improving the process monitoring with new events and enhanced security, demonstrating a good understanding of both backend and security aspects of the project.
golangdatadog-agentagentobservabilitypmm
Gui774ume/fsprobe
Jun 2020 - Sep 2021
A file system events notifier based on eBPF
Contributions:1 review, 20 commits, 2 PRs in 1 year 4 months
eventsebpfnotifiersystem-eventsfile-system
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