Lionel Jouin
Software Engineer At Red Hat
Stockholm, Sweden
Summary
🤩
Rockstar🎓
Top SchoolLionel Jouin is a seasoned software engineer with 11 years of experience specializing in cloud-native networking and open source CNI/Network Service Mesh ecosystems. Currently at Red Hat after several impactful years at Ericsson, he has been a Meridio maintainer and contributed substantive backend and DevOps improvements to prominent repos like containernetworking/plugins. Lionel blends kernel-level networking insight with Kubernetes-focused architectures, having prototyped IMS networking with NSM and redesigned Kubernetes networking for telco use cases. A regular conference speaker (KubeCon, Cloud Native Telco Day) and active GitHub contributor, he’s known for pragmatic fixes—refactoring VRF plugins, stabilizing flaky tests, and adding policy routing features—that materially improve production reliability. Based in Stockholm, he pairs a strong academic background from Uppsala with hands-on development across Linux, Go, and Kubernetes tooling.
11 years of coding experience
6 years of employment as a software developer
Bachelor's degree Informatique, Bachelor's degree Informatique at Université de Rennes ITwo-year university degree in technology Computer Science, Two-year university degree in technology Computer Science at Le Mans UniversitéBaccalaureate science and technology industry and sustainable development Information and digital systems, Baccalaureate science and technology industry and sustainable development Information and digital systems at Lycée Immaculée ConceptionMaster's degree Computer Science, Master's degree Computer Science at Uppsala University
French, English, Spanish
Stackoverflow
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Github Skills (10)
net10
network10
cni10
go10
networking10
plugin10
testing10
devops9
kubernetes8
kubernetes-pods8
Programming languages (10)
Github contributions (5)
containernetworking/plugins
May 2023 - Dec 2025
Some reference and example networking plugins, maintained by the CNI team.
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:6 reviews, 5 PRs, 6 comments in 2 years 7 months
Contributions summary:Lionel primarily focused on enhancing and maintaining the `containernetworking/plugins` repository. Their contributions included implementing features such as passing a table ID for policy routing, adding scope for routes, and resolving flaky tests by ignoring link-local routes. Moreover, the user refactored the VRF plugin, and added the STATUS command for various plugins. These changes reflect a solid understanding of network configuration and testing in a containerized environment.
cninetworking
LionelJouin/kubernetes
Jan 2024 - Jul 2026
Production-Grade Container Scheduling and Management
Contributions:113 pushes, 34 branches in 2 years 6 months
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