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.