Senior IT Infrastructure Engineer

Job Duties:

• Design, implement, and support enterprise IT infrastructure across network, server, virtualization, and cloud environments.
• Implement, operate, and troubleshoot enterprise network infrastructure, including routing, switching, firewalls, VPNs, NAC, load balancers, and wired/wireless networks.
• Deploy, configure, and maintain Windows Server, Linux, VMware/Hyper-V, and enterprise storage platforms.
• Administer and support Microsoft 365 and hybrid identity environments, including Entra ID, Intune, Exchange Online, and Microsoft Teams.
• Perform troubleshooting and root cause analysis (RCA) for complex infrastructure, systems, and network issues.
• Implement and maintain security controls, including network segmentation, system hardening, patch management, vulnerability remediation, and access management.
• Manage infrastructure monitoring platforms such as Zabbix, Grafana, PRTG, and Nagios, including performance tuning and alert optimization.
• Support ITSM processes including incident, problem, change, and service request management.
• Maintain infrastructure documentation, asset inventory, lifecycle management records, and operational procedures.
• Manage infrastructure vendors, support contracts, SLAs, and infrastructure-related projects.
• Provide escalation support for L2/L3 infrastructure and end-user computing issues.
• Participate in after-hours maintenance activities and on-call support rotations when required.

Job Requirements:

• Degree in IT, Computer Science, or a related discipline.
• Minimum 5 - 7 years of experience in IT infrastructure, systems, and network engineering.
• Strong hands-on experience with enterprise firewalls (e.g., Palo Alto, Fortinet), including policy management, VPN, NAT, and troubleshooting.
• Strong knowledge of enterprise networking, including routing, switching, firewalls, VPNs, VLANs, and NAC.
• Experience supporting Windows Server, Linux, VMware/Hyper-V, and Microsoft 365 environments.
• Familiarity with infrastructure monitoring tools such as Zabbix, Grafana, PRTG, or Nagios.
• Experience in system hardening, patch management, vulnerability remediation, and security operations.
• Strong troubleshooting, root cause analysis, and stakeholder management skills.
• Experience in regulated industries such as finance, telecommunications, or technology is an advantage.