Middle System Administrator

Əsas vəzifələr Administer Windows Server, Active Directory, Group Policy, DNS, DHCP, file servers and NTFS/SMB permissions; support Entra ID integration. Administer VMware or Hyper-V: VMs, resources, virtual networking, HA/DRS/vMotion and performance. Maintain servers, RAID, SAN/NAS and iSCSI; handle HPE hardware, iLO and firmware; troubleshoot Fibre Channel zoning, LUNs and multipathing. Run Veeam jobs, investigate failures, perform file- and VM-level restores; maintain backup retention, immutable/off-site copies and DR procedures to RPO/RTO targets. Maintain network services and firewall policies; troubleshoot VLAN, routing, NAT and VPN issues; secure remote access. Support MFA, privileged account management and Conditional Access. Administer Microsoft 365 and Exchange Online: users, mailboxes, groups, licences; troubleshoot mail flow and SPF, DKIM, DMARC. Administer Linux servers: services, SSH, scheduled tasks, logs and storage. Automate routine tasks with PowerShell and Bash. Monitor health and performance; apply patches and vulnerability fixes; investigate incidents and find root causes. Follow change management, risk assessment and SLA requirements; keep diagrams, configuration records and documentation current; run regular recovery tests. Tələblər 3–5 years in system administration or IT infrastructure. Windows Server 2016–2025 and Active Directory: Group Policy, DNS, DHCP, OUs, domain controllers, replication. VMware vSphere/ESXi/vCenter and/or Microsoft Hyper-V. Enterprise servers, RAID, SAN/NAS storage and iSCSI. Veeam Backup & Replication, backup monitoring and data recovery. Networking: TCP/IP, subnetting, VLANs, routing, switching, NAT, VPN and firewall troubleshooting. Linux servers (Ubuntu, Debian or RHEL-based). Microsoft 365, Exchange Online and Microsoft Entra ID. PowerShell or Bash scripting. Monitoring, patch management, security hardening, MFA and least-privilege access. Strong troubleshooting skills; able to work independently and document procedures; team player. HPE ProLiant, iLO, MSA and Primera/3PAR experience. Fibre Channel SAN: zoning, WWPNs, LUN mapping, multipathing. VMware HA, DRS and vMotion; Veeam immutable backups and disaster recovery testing. Entra ID hybrid identity, Conditional Access, Microsoft 365 security, Azure and Defender. SCCM/MECM software deployment and patching; WSUS; Failover Clustering. FortiGate, Cisco or MikroTik firewalls; Zabbix, PRTG or Grafana monitoring. ITIL, ISO 27001 and change management; relevant Microsoft, VMware, Veeam, HPE, Cisco or Fortinet certifications.