About this role
The ICT operations service is seeking a Senior Windows System Administrator to join its Windows Server Team and help operate, maintain and support production infrastructure across software and hardware environments. The assignment focuses on Windows server operations, second- and third-line incident resolution, application server releases, Citrix / Remote Desktop maintenance and the ongoing reliability of the Windows server estate. Monitor, investigate and resolve second- and third-line infrastructure incidents. Implement smaller service and infrastructure change requests. Execute line-of-business application releases on application servers. Maintain Citrix XenDesktop servers and Remote Desktop Session Hosts. Perform routine maintenance, monitoring and follow-up across Windows servers. Administer and support Active Directory, Group Policies, DHCP, DNS, PXE and Windows firewall technologies. Support Microsoft 365 services, including Exchange Online, Teams and authentication. Must Have System administration (setup, management and maintenance of systems) System-engineer-level knowledge and experience in at least one specialist domain: Unix/Linux/Windows, mainframes, application middleware, security systems, or network and communications systems. Microsoft 365 (Exchange Online, Teams and authentication) Microsoft Active Directory and Group Policies Windows infrastructure services (DHCP, DNS, PXE) and firewall technologies Windows Server 2016 or later – 5+ years, Senior level (the context additionally refers to Windows Server 2012 or later). Dutch Should Have ICT infrastructure solutions. Relevant ITIL processes, particularly change management. Azure DevOps Server 2022 or later. Citrix NetScaler 13.x or later. Citrix Virtual Apps and Desktops 2402 LTSR or later. CommVault Simpana v11 Backup. Microsoft Defender for Endpoint. Microsoft Endpoint Manager (Intune). Microsoft Exchange Server 2019 or later. Microsoft Failover Cluster. Microsoft IIS application servers and .NET hosting. Microsoft Just Enough Administration (JEA). Microsoft SharePoint Server Subscription Edition or later. Microsoft SQL Server 2016 or later. Microsoft Storage Spaces (Direct). Microsoft System Center Configuration Manager 1902 or later. Microsoft System Center Operations Manager 2403 or later. MSIX packaging. Office 365 SharePoint Online. PowerShell Desired State Configuration. TIBCO Spotfire Server 12.x or later. UniPrint Infinity Suite. VMware vSphere 8.0 or later. Windows Installer XML (WiX). Windows PowerShell. XenServer / Citrix Hypervisor 8.x or later. Additional Technologies Mentioned in the Project Context Microsoft Active Directory Federation Services (ADFS). Microsoft Always On VPN. Office 365 Security & Compliance.