Network Administrator M/F

Gi Group FranceRhôneEURESpublished 09/22/2026
Must-have:AzureSecuritySenior
Machine translation — original language: French.Show original

Grafton is recruiting for one of its clients - Senior Network Administrator (CDI) - Lyon (69)

Context

As part of a major transformation of the information system, our client is strengthening its IT team and recruiting a Senior Network Administrator.

The Position

Reporting to the IT Manager, you are responsible for the proper functioning, availability, maintenance, and security of the networks and equipment.

Your main missions (selection)

Administration / Operations

  • Ensure the operation and supervision of the LAN/WAN infrastructure (including uses related to the stage: IPTV, monitoring).
  • Install/configure network admin equipment and tools (incl. VM), ensure monitoring, and propose improvements.
  • Administer the scope equipment: VLAN, Wi-Fi, firewall, switch, etc.
  • Design and evolve server/virtualization/network architectures.
  • Set up temporary/mobile networks according to needs.
  • Guarantee high availability during key moments (performances, festivals).
  • Document and ensure the follow-up of actions.

Maintenance (MCO)

  • Maintenance in operational conditions of networks and evolutions within a quality/security logic.
  • Organization and supervision of network equipment updates.

Security

  • Monitoring and remediation of vulnerabilities.
  • Handling of security incidents/anomalies.
  • Administration of cybersecurity tools and participation in regular audits.

Technical Environment

  • Windows Server 2019/2022
  • Active Directory / Azure AD (Entra ID)
  • Microsoft 365
  • Proxmox
  • Continuously evolving environment

Profile Sought

  • Expertise in network administration
  • Good knowledge of network architectures in Windows environments (and notions of Mac OS)
  • Technical English
  • Team spirit, communication, rigor, reactivity, stress management
  • Proactive approach
  • Interest in the audiovisual / stage environment
  • Experience in live performance / audiovisual / events: an asset