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Salary
≈ $42k – $71k per year (Estimated)
Location
In office (France)
Employment
Full-Time

First seen by Alion on Oct 2, 2026.

Overview
Company
Impact
Profile match
DCSIT is a French IT services group that supports clients with system administration, development, mainframe and operations consulting. It hires Windows system administrators, full stack and COBOL developers, DevOps engineers and infrastructure project managers, mostly in Lyon. The group is headquartered in Lyon, Auvergne-Rhône-Alpes, France.

Dans le cadre du renforcement de nos équipes, nousrecherchons un Ingénieur Systèmes Linux N3 / DevOps (H/F) pour intervenirdans un environnement technique exigeant, mêlant expertise système, MCO,automatisation et Infrastructure as Code.

Vous rejoignez une équipe d’ingénierie système et intervenezen tant que référent technique Linux afin de garantir la stabilité, lasécurité et la performance des infrastructures physiques, virtuelles et Cloud.

Vos missions

Expertise Linux N3 & MCO

  • Intervenir en escalade N3 sur les incidents de production complexes ;
  • Réaliser les analyses avancées : crash dumps, problématiques CPU, mémoire, I/O et réseau ;
  • Piloter les campagnes de patching et de montée de version des environnements Linux ;
  • Assurer le durcissement des systèmes : Kernel tuning, SELinux, AppArmor, SSH, Firewall ;
  • Superviser les performances et réaliser le Capacity Planning des infrastructures ;
  • Optimiser les configurations système hébergeant des applications critiques.

Industrialisation & Infrastructure as Code

  • Concevoir, construire et maintenir les Golden Images Linux destinées aux différents environnements : VMware, Cloud et Bare Metal ;
  • Industrialiser la création des images avec HashiCorp Packer ;
  • Intégrer ces templates aux processus de déploiement via Terraform ;
  • Concevoir, maintenir et documenter les modules Terraform permettant d'automatiser le provisionnement des serveurs ;
  • Développer et maintenir des rôles Ansible pour automatiser la configuration des systèmes ;
  • Participer à l'amélioration des pipelines CI/CD et des processus de déploiement.

Environnement technique

  • Linux : Red Hat Enterprise Linux, Rocky Linux, AlmaLinux, Debian, Ubuntu
  • IaC : Terraform, Packer
  • Automatisation : Ansible, Ansible Tower / AWX
  • Scripting : Bash, Python et/ou Go
  • Virtualisation : VMware vSphere
  • Cloud : AWS, Azure et/ou GCP
  • Stockage : LVM, multipathing
  • Sécurité : CIS Benchmarks, SELinux/AppArmor, SSH Hardening, Firewall
  • DevOps : Git, pipelines CI/CD
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