IT Infrastructure Administrator

About the role

The IT Infrastructure Administrator is responsible for the administration, maintenance, monitoring, security, and availability of the organization’s server and endpoint infrastructure. This role supports both Windows and Linux environments, virtualization platforms, backup solutions, Microsoft cloud services, and enterprise endpoint management. Collaboration with cybersecurity, network, service desk, and application teams ensures systems remain secure, reliable, and compliant.

Key responsibilities

• Administer and maintain Windows and Linux servers in physical and virtual environments.
• Manage virtualization platforms and the full VM lifecycle, including provisioning, configuration, performance monitoring, and troubleshooting.
• Perform operating system administration, hardening, and optimization.
• Manage Windows Server services such as Active Directory, DNS, DHCP, Group Policy, and related infrastructure.
• Administer Microsoft 365, Microsoft Entra ID, and other cloud‑based infrastructure services.
• Handle user accounts, groups, permissions, service accounts, and access controls.
• Implement and maintain OS and application patching processes.
• Monitor system performance, availability, capacity, and resource utilization.
• Troubleshoot server, OS, application, and infrastructure issues.
• Administer endpoint management and security tools, including EDR/antivirus and vulnerability management platforms.
• Support backup, restore, and disaster‑recovery operations and regularly validate backup integrity.
• Maintain system security configurations in line with corporate standards and remediate vulnerabilities.
• Maintain documentation, configuration records, procedures, and technical diagrams.
• Participate in incident, problem, and change management processes.
• Perform system upgrades, migrations, deployments, and lifecycle activities.
• Coordinate with vendors and technical support for advanced troubleshooting or escalation.
• Support IT audits, security assessments, compliance activities, and remediation efforts.
• Provide on‑call or after‑hours support as required.

Required profile

• Experience administering enterprise or multi‑site environments.
• Experience with Microsoft Azure and hybrid infrastructure.

Required skills

• Windows Server administration
• Active Directory and Group Policy
• DNS and DHCP
• Microsoft Entra ID / Azure
• Microsoft 365 administration
• Windows and Linux administration
• Virtualization technologies (VMware, Hyper‑V, Proxmox)
• Backup and disaster‑recovery technologies
• Endpoint management and patch management
• EDR/antivirus and vulnerability management
• PowerShell and/or scripting for automation
• System monitoring and troubleshooting
• Server hardware and storage technologies
• IT security hardening and access management
• ITIL‑based incident, problem, and change management