Windows Systems Administrator

Inetum is a European leader in digital services. Inetum’s team of 28,000 consultants and specialists strive every day to make a digital impact for businesses, public sector entities and society. Inetum’s solutions aim at contributing to its clients’ performance and innovation as well as the common good.  

Present in 19 countries with a dense network of sites, Inetum partners with major software publishers to meet the challenges of digital transformation with proximity and flexibility.  

Driven by its ambition for growth and scale, Inetum generated sales of 2.5 billion euros in 2023.  

We are seeking an experienced Windows Systems Administrator to join our IT team. The ideal candidate will be responsible for designing and operate Windows Server platforms and Microsoft services for multiple clients. You´ll be integrated in a shared services team of administrators/Engineers supporting multiple client environments (multi-tenant). This role requires deliver operational excellence, automation, and security, act as Level 3 expert, and lead/execute transformation projects.

 

Responsibilities:

• Responsible for operational availability, performance, and security of Windows infrastructure across on-prem and cloud;
• Rotating on-call to ensure service continuity per contractual SLAs;
• Advanced operations, Administer and operate Windows Server (2016/2019/2022), Active Directory, DNS/DHCP, Group Policy;
• Patch and update management, hardening and compliance;
• Manage core infrastructure services: file services/DFS, printing, RDS, IIS, certificates/PKI;
• Virtualization: VMware vSphere/ESXi/vCenter and/or Hyper-V (clusters, resource management, snapshots)
• Backup and recovery: Veeam or equivalent, DR planning and restore testing;
• Monitoring and observability: implement probes, alerts, dashboards;
• Automation and scripting recurring tasks, deployments, reporting, hardening;
• Operational security: AV/EDR, MFA/Conditional Access, vulnerability management, bastion/PAM;
• Cloud and Microsoft 365/Entra ID (Azure AD): accounts, licenses, Exchange Online, Intune/Endpoint Manager (as per client scope);
• L2/L3 support: incident handling, advanced troubleshooting, root cause analysis, corrective actions;
• Change management: planning, execution, rollback and documentation (ITIL);
• Documentation and industrialization: runbooks, procedures, standards, CMDB, service maps;
• Cross-team collaboration: coordinate with network/security/DevOps; manage vendors when needed;
• On-call duties: after-hours incident response, escalation, client communication, adherence to SLAs.

• 5 to 10 years of hands-on Windows administration in operations/run;
• Strong expertise in Windows Server, AD, GPO, DNS/DHCP, IIS, RDS;
• Microsoft Cloud: Azure, Entra ID (Azure AD), Microsoft 365;
• Experience with Citrix, Nutanix, VMware and/or Hyper-V and basic storage concepts (SAN/NAS);
• PowerShell scripting (automation, modules, basic APIs);
• Backup/restore, DR, monitoring, and advanced troubleshooting (Veeam Backup & Replication);
• Experience with management tools (WSUS, Intune, Windows Admin Center), ITSM tools (ServiceNow) and monitoring (Zabbix, Canopsis);
• Operational security: patching, hardening, MFA, vulnerability management;
• Networking fundamentals: TCP/IP, VLANs, VPN, basic routing, NAT;
• ITIL practices: Incident/Change/Problem, documentation discipline;
• Ability to operate in a multiclient environment with SLA constraints;
• Fluent in English.