Network Engineer – Enterprise Infrastructure & IT Support

Role Summary

Responsible for administration, configuration, monitoring, and troubleshooting of enterprise network infrastructure, security systems, Windows Server environments, Microsoft 365 services, virtualization platforms, storage systems, and end-user computing environments. Provides Tier 1–3 IT support ensuring high availability, performance, and security of enterprise IT infrastructure.

Key Responsibilities

Network Infrastructure Administration

• Configure, monitor, and troubleshoot Fortinet and Palo Alto firewalls, including security policies, NAT, and access control.
• Administer Cisco and Aruba switches, including VLAN configuration, trunking, and port management.
• Support Aruba wireless access points, troubleshoot wireless connectivity and authentication issues.
• Configure and troubleshoot Cisco routers and enterprise network connectivity.
• Support Cisco Unified Communications Manager (CUCM) and Cisco IP Phones, including endpoint registration and VoIP troubleshooting.

Windows Server and Core Infrastructure Support

• Administer Windows Server 2022, 2019, and 2016 environments.
• Manage Active Directory Domain Services, including users, groups, GPO, and authentication troubleshooting.
• Configure and troubleshoot DNS, DHCP, IIS Web Server, File Server, and Application Server roles.
• Monitor server performance, apply updates, and troubleshoot system and service failures.

Microsoft 365 Administration

• Administer Microsoft 365 tenant, including user provisioning, license management, and access control.
• Troubleshoot Exchange Online, Outlook, Teams, OneDrive, and SharePoint issues.
• Resolve authentication, mailbox access, and application connectivity issues.

Virtualization and Storage Support

• Support VMware vSphere infrastructure, including VM deployment, monitoring, and troubleshooting.
• Administer and troubleshoot Synology NAS and HPE SAN storage systems.
• Ensure storage availability and connectivity across enterprise infrastructure.

Desktop Support and End-User IT Support

• Provide Tier 1, Tier 2, and Tier 3 support for Windows 10/11 and macOS systems.
• Troubleshoot hardware, operating system, network, and application issues.
• Configure desktops, laptops, printers, and domain-joined systems.
• Support Microsoft Office, Microsoft 365 applications, and enterprise software.

Network and Infrastructure Monitoring & Incident Resolution

• Monitor network devices, servers, and infrastructure performance.
• Troubleshoot network, server, storage, and endpoint connectivity issues.
• Perform root cause analysis and resolve infrastructure incidents.
• Maintain IT documentation and coordinate with vendors when required.

Technical Environment

Network: Fortinet, Palo Alto Firewalls, Cisco Switches & Routers, Aruba Switches & Access Points
VoIP: Cisco CUCM, Cisco IP Phones
Servers: Windows Server 2022, 2019, 2016, Active Directory, DNS, DHCP, IIS
Cloud: Microsoft 365, Exchange Online, Teams, SharePoint, OneDrive
Virtualization: VMware vSphere
Storage: Synology NAS, HPE SAN
Endpoints: Windows 10/11, macOS
Support: Tier 1–3 IT Support, Desktop Support, Infrastructure Support

Job Type: Full-time

Education:

• Bachelor's (Preferred)

Experience:

• Network Administration: 4 years (Required)