Job Duties: Design, implement, and support end-to-end on-premises IT infrastructure (network, systems, and cloud environments) Implement, operate, and troubleshoot enterprise network infrastructure (routing, switching, firewalls, VPN, NAC, load balancers, wired/wireless networks). Deploy, configure, and support Windows Server, Linux, VMware/Hyper-V, and storage systems. Support Microsoft 365 and hybrid identity environments (Entra ID, Intune, Exchange, Teams). Perform troubleshooting and root cause analysis (RCA) for complex infrastructure issues. Implement security controls including segmentation, hardening, patching, and vulnerability management. Manage monitoring platforms (Zabbix, Grafana, PRTG, Nagios) including performance tuning and alert optimisation. Support ITSM processes (incident, problem, change) and participate in on-call operations Maintain IT asset inventory, lifecycle management, and technical documentation standards Manage vendors, SLAs, and infrastructure-related pro...