Windows System Administrator

Location. La Spezia, ItalySecurity. Eligibility for NATO Secret clearance requiredOltre-CSD is looking for an experienced Windows System Administrator to support secure, mission-critical infrastructures within the Cyber, Space & Defence domain. The successful candidate will perform system administration across classified and unclassified networks and ensure the physical and electronic security of all systems.Main Responsibilities- Perform daily administration of Microsoft Windows Server environments (AD, DNS, DHCP, Group Policies).- Manage Active Directory Services including Domain Controllers, Trust Relationships, CA, NPS.- Administer virtualization platforms and Virtual Desktop Infrastructure (Microsoft, VMware).- Execute installation, configuration, updates, and maintenance of Windows-based systems and applications.- Use infrastructure management tools to automate provisioning, deployment, and testing.- Perform system and data backups and restorations following standard procedures.- Monitor systems proactively, detect performance degradation, and generate availability reports.- Lead troubleshooting activities, resolve operational issues, and propose corrective or procurement actions.- Tailor system software to maximize hardware performance and install/test new versions.- Prepare and maintain technical documentation for systems, networks, and cabling.- Develop scripts (PowerShell) to automate system administration tasks.- Support release management processes, including roll-out and roll-back.- Provide 2nd-line support and collaborate closely with the Service Desk, including on-the-job training for 1st-line support.- Stay up-to-date with IT technology and user-facing trends to ensure modern support capabilities.- Perform duties both at the Centre and, when required, on deployed platforms (typically short deployments).Mandatory Requirements- Higher technical vocational training or equivalent experience.- At least 5 years of post-related experience.- Minimum 3 years of detailed experience with:– MS Windows Server administration– Active Directory– DNS, DHCP– GPOs- Strong experience with WSUS, SCCM, CA, NPS.- In-depth experience with virtualization and VDI technologies.- Strong knowledge of MS Office, email clients, browsers, and web content management tools.- Ability to ensure physical and electronic security of systems.- Proven agility in dynamic environments and a strong service-oriented attitude.- Scripting and automation skills (PowerShell essential).- Excellent English proficiency (NATO STANAG **** – SLP ****).- Eligibility for NATO Secret security clearance (active clearance is considered a strong asset).Desirable Qualifications- Knowledge of Microsoft SQL Server administration.- VMware or Microsoft Server certifications (e.G., MCSA).- Experience in hybrid Linux/Active Directory environments.- Strong knowledge of ITIL Service Management.- Project management experience.- Experience with configuration control and collaboration tools.- Prior experience in international military/civilian environments.- Certifications such as Security+, Network+, or equivalent.