Sébastien Blaisot
Senior DevOps Engineer at lemlist
Rennes, Brittany, France
Summary
🤩
Rockstar🎓
Top SchoolSébastien Blaisot is a Senior DevOps Engineer with 13+ years building and leading infrastructure teams across French tech organizations, now helping developers ship production-ready code at lemlist. He combines hands-on Linux/SRE expertise with people leadership, having restructured Cozy Cloud’s infra team, driven cloudification and GitOps, and served as RSSI. His open-source contributions span security hardening for Debian (ovh/debian-cis), backend and DevOps work on cozy-stack, and practical controller support enhancements for the Mixxx DJ app, reflecting both security and user-facing interests. Experienced in datacenter, network and platform lifecycles, he’s equally comfortable tuning AppArmor and audit rules as defining long-term infra roadmaps. Based in Rennes, he pairs a systems-engineering background from INSA Rennes with a pragmatic, security-conscious approach to CI/CD and operational reliability. A less obvious thread: he blends hobbyist multimedia contributions (Mixxx) with enterprise-grade compliance work, showing curiosity across both creative and compliance domains.
13 years of coding experience
7 years of employment as a software developer
Ingénieur, Informatique, Ingénieur, Informatique at INSA Rennes
French, English, German
Github Skills (24)
couchdb10
javascript10
back-end-development10
debian10
audit10
bash10
mixer10
security10
script10
go10
swift10
shell10
djl10
auditing10
configuration-management9
Programming languages (22)
Github contributions (5)
cozy/cozy-stack
Jan 2018 - Dec 2022
Simple, Versatile, Yours
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:107 reviews, 64 commits, 119 PRs in 5 years
Contributions summary:Sébastien primarily contributed to back-end development tasks, addressing issues related to configuration, file system operations, and database interactions within the Cozy stack. They fixed bugs, refined debugging messages, and improved logging for the migrations worker. The user also implemented DevOps-related changes, such as adding scripts for konnector and improving the swift layout. These contributions included enhancements to existing features and ensuring system stability.
cozycozy-v3versatileyourscouchdb
mixxxdj/mixxx
May 2015 - Dec 2022
Mixxx is Free DJ software that gives you everything you need to perform live mixes.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 review, 326 commits, 100 PRs in 7 years 8 months
Contributions summary:Sébastien's commits primarily focus on enhancing the Hercules DJ Control MP3 e2 controller support within the Mixxx DJ software. They've updated controller mappings, specifically adding 4-deck support and implementing new features such as brake and spinback effects. This included modifying the controller's JavaScript files and integrating native soft takeovers for volume and equalizer controls.
everythingwindowshidmidilinux
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