Senior System Administrator

📋 Description Administer and troubleshoot Windows and Linux servers. Support Microsoft Hyper-V and VMware environments. Diagnose issues with Dell and Supermicro servers. Resolve customer incidents involving VPS, dedicated servers, virtualisation, and connectivity. Maintain Active Directory, DNS, Group Policy, backups, and monitoring. Support data centre infrastructure, storage, and networking. 🎯 Requirements 7+ years of systems, infrastructure, or data-centre experience. Strong hands-on experience with: Windows Server and Linux; Hyper-V and VMware; Dell and/or Supermicro servers; Server and virtualisation troubleshooting. Experience in data centres, hosting, managed services, or another 24/7 infrastructure environment. 🎁 Benefits Engagement: Independent contractor. Approximately 10–15 hours per week. Remote, primarily during European business hours. Rotating on-call coverage by agreement.