Laurent Bernaille
Principal Engineer at Datadog
France
Summary
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RockstarLaurent Bernaille is a Principal Engineer based in France with 12 years of experience building cloud-native infrastructure and networking systems. He currently leads architectural and delivery efforts at Datadog, focusing on scalable, secure observability and backend reliability. A significant portion of his open-source work is on the high-profile Cilium project, where he has modified core eBPF-based networking, IPsec, routing and AWS ENI integrations—demonstrating deep familiarity with low-level networking and cloud platforms. Laurent blends hands-on systems programming, netlink library updates and DevOps automation with pragmatic product-minded decisions like configurable routing flags. He’s known for tackling knotty node-to-node communication and encryption problems that sit at the intersection of kernel-level networking and production cloud deployments. Colleagues rely on him to translate complex infrastructure constraints into reliable, ship-ready implementations.
12 years of coding experience
French, English
Github Skills (16)
ipsec10
url-routing10
kubernetes10
linux10
go10
networking10
ebpf10
kubernetes-pods10
security10
bpf9
aws9
cloud-infrastructure9
infrastructure9
docker8
kernel8
Programming languages (6)
Github contributions (5)
cilium/cilium
Jun 2019 - May 2023
eBPF-based Networking, Security, and Observability
Role in this project:
Back-end Developer / DevOps Engineer
Back-end Developer / DevOps EngineerContributions:2 reviews, 20 PRs, 10 pushes in 3 years 11 months
Contributions summary:Laurent primarily contributes to the Cilium project by modifying core networking and security functionalities, including IPsec and routing configurations. They implemented and refactored code related to encryption, subnet modes, and node-to-node communication. Their work also involved updating the netlink library and making changes to AWS ENI integration, demonstrating familiarity with both low-level networking and cloud infrastructure. Furthermore, the user introduced a configuration flag for enabling or disabling certain routing behaviors.
bpfcontainerskerneltroubleshootingkubernetes-networking
DataDog/external-dns
Jan 2019 - Oct 2020
Configure external DNS servers (AWS Route53, Google CloudDNS and others) for Kubernetes Ingresses and Services
Contributions:8 reviews, 4 PRs, 5 pushes in 1 year 8 months
gcproute53dnsexternal-dnsdns-servers
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