> Markdown version of [/jobs/ext/2193739-sr-network-administrator](https://www.wearedevelopers.com/jobs/ext/2193739-sr-network-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Network Administrator - **Company:** Zachary Piper - **Location:** Newington, VA, United States - **Experience:** Expert - **Salary:** $120,000.0 - $135,000.0 - **Contract:** Permanent contract - **Skills:** IEEE 802.1X, Access Network, Computer Networks, System Configuration, Dynamic Host Configuration Protocol, Network Address Translation, Domain Name System (DNS), Trunking, Virtual Private Networks (VPN), NetFlow, Network Planning and Design, Network Monitoring, Routing, Network Segmentation, Packet Analyzer, Remote Access Technology, Simple Network Management Protocols, TCP/IP, Wireshark, Virtual Local Area Networks, Wireless Networks, Diagnostic Tools, Identity Services Engine, Network Access Control, Computer Network Technologies, Connectivity Problems, Firewalls (Computer Science), Routing & Switching, TACACS+ Protocol, Firewall Services Module, Open Network Automation Platform, Cisco - **Published:** August 23, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9101882/sr-network-administrator ## About the Role * High School Diploma or equivalent. * 3+ years of enterprise network administration experience. * Experience configuring and supporting enterprise network switches and routers. * Strong understanding of TCP/IP, DNS, DHCP, STP, SNMP, and routing fundamentals. * Hands-on experience with Cisco Identity Services Engine (ISE). * Experience administering Cisco DNA Center (DNAC). * Knowledge of firewalls, ACLs, NAT, and VPN technologies. * Experience with VLANs, trunking, inter-VLAN routing, and segmentation. * Proficiency using packet capture and analysis tools such as Wireshark and NetFlow. * Familiarity with enterprise wireless networking technologies and RF troubleshooting. * Understanding of RADIUS, TACACS+, and 802.1X network access control technologies. * Active TS/SCI Clearance REQUIRED ## Description * Configure, maintain, and support enterprise network switches and routers. * Monitor network health, performance, and availability. * Respond to incidents, alerts, and support tickets in accordance with operational procedures. * Troubleshoot connectivity, routing, and switching issues to restore services rapidly. * Support and administer Cisco Identity Services Engine (ISE) for network access control and policy enforcement. * Utilize Cisco DNA Center (DNAC) for policy-based automation, network assurance, and centralized management. * Assist with deployment and optimization of network automation capabilities. * Participate in network design discussions and implementation activities. * Support equipment installation, cabling, fiber connections, and infrastructure buildouts. * Configure and maintain VLANs, routing policies, trunking, and network segmentation. * Collaborate with senior engineers on enterprise network enhancement initiatives. * Maintain secure networking environments supporting mission-critical operations. * Implement firewall policies, VPN configurations, ACLs, and network access controls. * Support cybersecurity requirements and compliance standards within a TS/SCI Army environment. * Adhere to established change management and security procedures. * Diagnose network performance and connectivity problems. * Utilize packet analysis and troubleshooting tools including Wireshark and NetFlow. * Perform root-cause analysis and provide recommendations for service improvements. * Document network configurations, operational procedures, and change activities. * Work closely with network engineers, system administrators, and cybersecurity personnel. * Communicate technical concepts effectively to both technical and non-technical stakeholders. * Utilize strong interpersonal and technical skills to support customer mission requirements. ## Related Videos - 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