System Administrator

il y a 1 semaine


Bertrange, Luxembourg Proximus Luxembourg Temps plein 60.000 € - 80.000 € par an

1. Exploitation & Support (RUN L2/L3)

  • Traitement des incidents et des requêtes avec un réel sens de l'ownership jusqu'à la résolution (RCA, problem management).
  • Participation aux astreintes et à la gestion des changements (ITIL, CAB).

2. Administration Microsoft

  • Gestion des environnements Windows Server 2012 à 2025 et Windows 10/11.
  • Administration AD DS, GPO, DNS/DHCP, ADFS/Entra Connect (hybride).
  • Gestion Exchange (on-prem / hybride / Online) : mailflow, DAG, transport rules.
  • Exploitation des solutions Microsoft 365 : Teams, SharePoint Online, OneDrive, Defender.
  • Administration Azure (Entra ID - Azure AD, IaaS VMs).

3. Virtualisation & Postes de travail

  • Connaissance de Citrix CVAD (Delivery Groups, StoreFront, NetScaler/ADC) et/ou Omnissa Horizon View.
  • Gestion du patching et des déploiements via WSUS, SCCM, Intune/Endpoint Manager, Patch My PC.

4. Automatisation & Qualité

  • PowerShell avancé (modules AD / Exchange).
  • Supervision, analyse d'événements et troubleshooting.
  • Rédaction de procédures (SOP, work instructions) et participation à l'amélioration continue.

Votre profil :

  • Solide maîtrise des environnements Windows Server / Active Directory en contexte datacenter.
  • Compétence avérée sur AD DS, GPO, DNS/DHCP, Exchange (on-prem & Online) et PowerShell (scripts de production).
  • Bonne connaissance des processus ITIL (incident, change, problem) et du travail en environnement client exigeant.
  • Bon niveau en Microsoft 365 et Azure / Entra ID.
  • Expérience significative sur Citrix et/ou VMware Horizon.
  • Connaissance d'Intune/MECM, du packaging applicatif, de FSLogix et des solutions de sécurité Microsoft (Defender for Endpoint, Conditional Access, PIM).
  • Langues : Français courant, anglais professionnel (écrit et oral) ; l'allemand et/ou le luxembourgeois sont un plus.
  • Autonomie, rigueur et sens des priorités.
  • Excellent sens du service et de la communication client.
  • Curiosité technique et persévérance dans l'analyse jusqu'à la root cause.
  • Esprit d'équipe et goût pour le partage de connaissances (mentorat ponctuel des équipes Service Desk / N1).


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