Network Administrator

Zachary Piper Solutions is seeking a Network Administrator to support a long-term enterprise IT program based in Newington, VA . The Network Administrator will support enterprise routing and switching, network access control, network management, and troubleshooting across a large-scale environment. This position requires a TS/SCI Clearance and is onsite in Newington, VA!

Responsibilities of the Network Administrator:

• Manage, configure, and troubleshoot Cisco-based enterprise networks
• Administer and support Cisco Identity Services Engine (ISE) and Cisco DNA Center (DNAC)
• Configure and maintain VLANs, trunking, inter-VLAN routing, and network segmentation
• Support enterprise routing and switching infrastructure
• Monitor network performance and proactively identify and resolve connectivity issues
• Troubleshoot network issues using tools such as Wireshark and NetFlow
• Support network security technologies including firewalls, ACLs, NAT, and VPNs
• Manage network access control technologies including 802.1X, RADIUS, and TACACS+
• Support secure network operations within a highly regulated environment
• Collaborate with network engineers, system administrators, infrastructure teams, and security teams
• Participate in change management, incident response, and network maintenance activities
• Document network configurations, troubleshooting procedures, and operational changes
• Support data center and physical network infrastructure
• Work with technical and non-technical stakeholders to resolve network issues and maintain reliable enterprise operations

Qualifications for the Network Administrator:

• 3+ years of network administration experience supporting enterprise environments
• Active TS/SCI clearance
• Experience supporting enterprise routing and switching environments
• Strong hands-on experience with Cisco routers and switches
• Experience configuring and troubleshooting VLANs, routing, and network segmentation
• Experience with Cisco ISE
• Experience with Cisco DNA Center (DNAC)
• Experience using Wireshark, NetFlow, or similar network troubleshooting tools
• Knowledge of 802.1X, RADIUS, and TACACS+
• Experience with firewalls, ACLs, NAT, and VPN technologies
• Strong understanding of network security and access-control principles
• CompTIA Security+ certification
• CCNA certification
• Strong troubleshooting, analytical, and communication skills
• Ability to work effectively with infrastructure, systems, and security teams

Compensation for the Network Administrator:

• Salary: $120,000 - $135,000
• Comprehensive benefits package including Medical, Dental, Vision, 401(k), PTO, and Paid Holidays

#LI-MM1 #LI-ONSITE

Keywords: Network Administrator, Network Engineer, Cisco, Cisco Networking, Cisco ISE, Cisco DNA Center, DNAC, Routing, Switching, VLAN, Network Segmentation, Inter-VLAN Routing, Enterprise Networking, Network Troubleshooting, Wireshark, NetFlow, 802.1X, RADIUS, TACACS+, Network Access Control, NAC, Firewall, VPN, ACL, NAT, Data Center Networking, Network Security, Infrastructure, Security+, CompTIA Security+, CCNA, TS/SCI, Network Operations, Enterprise IT, Network Management