Senior IT Infrastructure Engineer (Network & Systems)

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 projects Provide L1/L2 support for end-user computing (Windows workstations and enterprise applications). Job Requirements: Degree in IT, Computer Science, or related field. 8+ years of experience in IT infrastructure and/or network engineering. Strong hands-on experience with Palo Alto firewalls (policy management, VPN, NAT, troubleshooting) is required. Strong hands-on experience in the following areas: Networking: routing, switching, firewalls, VPN, VLAN, NAC / Systems: Windows Server, Linux, VMware / Hyper-V / Enterprise technologies: Cisco, Aruba, Fortinet, F5, Microsoft 365, SIEM, PAM / Monitoring & operations: Zabbix, Grafana, PRTG, Nagios, ITSM tools, backup solutions (e.g. Veeam) Strong troubleshooting skills with ability to perform root cause analysis (RCA). Experience in system hardening, patch management, and security operations. Good communication and stakeholder management skills. Experience in regulated environments (finance, telecom, technology) is an advantage.