System & Network Administrator – Multi‑Site IT Infrastructure

About the role

A leading data‑center and critical computing infrastructure company is seeking an experienced System & Network Administrator to join its IT and Infrastructure team. The role covers maintenance, management and development of IT, network and security infrastructure across multiple sites with high availability.

Key responsibilities

• Manage and maintain network infrastructure, servers and core systems.
• Administer Fortinet firewalls, VPNs and monitoring solutions.
• Expand and operate the VMware environment.
• Operate Microsoft 365, Entra ID and Intune.
• Maintain backup systems and disaster‑recovery processes.
• Troubleshoot Tier 3 issues, perform root‑cause analysis and lead infrastructure projects.

Required profile

• 3–6 years of experience in system and network roles within an enterprise.
• Hands‑on experience with multi‑site IT environments and complex technical troubleshooting.
• Proven experience with Fortinet products, Aruba/HP switches and VMware.
• Strong knowledge of Windows Server, Active Directory, GPO, DNS and DHCP.
• Experience managing Microsoft 365 services and implementing MFA/Conditional Access.

Required skills

• Fortinet FortiGate, FortiManager, FortiAnalyzer
• Aruba and HP switches, VLAN, routing, VPN, network protocols
• VMware virtualization, Windows Server
• Active Directory, Group Policy, DNS, DHCP
• Microsoft 365, Exchange Online, SharePoint Online, Teams, Entra ID, Intune
• MFA, Conditional Access
• Veeam backup and disaster‑recovery
• Wireshark, PRTG, Zabbix
• PowerShell, Ansible, Terraform
• Microsoft Defender for Endpoint and Office 365
• CDR, NAC, Aruba wireless
• SIEM/SOC concepts, Zero Trust principles
• Relevant certifications (Fortinet NSE4+, CCNA/CCNP, VMware VCP, Microsoft 365 Administrator)