I am looking for a Senior System Administrator for a government company in Brussels. This is a long-term freelance assignment (multi-year engagement), requiring 2–3 days per week on-site.
Responsibilities
- Manage and maintain Microsoft and Linux server environments.
- Administer Microsoft 365 (Teams, SharePoint, OneDrive, Exchange).
- Manage Active Directory, DNS, DHCP, SCCM, and Intune.
- Support VMware and Nutanix virtualization platforms.
- Maintain backup and disaster recovery solutions (Veeam, NetBackup).
- Administer SQL Server, PostgreSQL, and Oracle databases.
- Implement infrastructure automation using Terraform and Ansible.
- Manage monitoring, security, VPN, and high-availability solutions.
- Support Docker, Kubernetes, and DevOps deployment processes.
Required Skills
- Windows Server 2016/2019/2022/2025
- Red Hat Linux & Debian
- Microsoft 365 & Exchange
- Active Directory, DNS, DHCP
- VMware vSphere & Nutanix
- Terraform & Ansible
- Veeam Backup & Disaster Recovery
- SCCM / Intune
- SQL Server, PostgreSQL, Oracle
- Docker & Kubernetes
- Monitoring tools (PRTG, SolarWinds, SCOM, Nagios)
Profile
- 8+ years of system administration experience.
- Strong troubleshooting, automation, and infrastructure management skills.
- Experience in enterprise environments.
- Fluent in English; French and/or Dutch is a plus.