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# Tier 3 Network Engineer (Top Secret)

- **Company:** Zachary Piper
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Salary:** $175,000.0
- **Contract:** Permanent contract
- **Skills:** Secure Shell (SSH), IEEE 802.1X, Link Aggregation (Ethernet), Microsoft Windows, Apple IOS, Border Gateway Protocol, Cisco IOS, Cisco Routers, Complex Networks, Data Centers, Linux, Disaster Recovery, Domain Name System (DNS), Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), Network Security, Network Layer, Network Planning and Design, Routing, Packet Analyzer, Network Administration, Performance Tuning, Remote Access Technology, BIG-IP Global Traffic Manager (GTM), Service Pack, Virtual Local Area Networks, Virtualization Technology, Software Vulnerability Management, Wide Area Networks, Transport Layer Security, Load Balancing, Nx-os, Firewalls (Computer Science), Data Center Networking, Palo Alto Networks, 3-tier Architectures, Big Ip, Cisco
- **Published:** October 22, 2026
- **Apply:** https://www.careerjet.com/job/us7106d62f7415a09e4c23cb54fd585b0b/eaa

## About the Role

* Active DOE Q Clearance or Active Top Secret Clearance required
 * 7+ years of network engineering experience supporting enterprise or government environments
 * Hands-on experience with Cisco routing and switching (IOS/NX-OS), Palo Alto Next-Generation Firewalls, VPN technologies, and F5 Load Balancers (GTM/Big-IP DNS)
 * Experience with General Dynamics TACLANE devices and/or GEMOne network management solutions
 * Strong knowledge of Layer 2/Layer 3 networking, BGP, VLANs, DNS, IPsec, TLS/SSL, SSH, 802.1x, LACP, LLDP, NTP, and encryption technologies
 * Experience supporting Windows and Linux/Unix operating systems, network security, packet analysis, vulnerability management, systems hardening, and incident response
 * Proven experience with network design, implementation, troubleshooting, and performance optimization
 * Must be eligible to work in the United States and obtain and maintain required government security clearances

## Description

* Install, configure, maintain, and optimize LAN/WAN infrastructure including Cisco routers, switches, Palo Alto firewalls, VPNs, F5 load balancers, and security appliances
 * Monitor, troubleshoot, and resolve complex network performance, routing, switching, voice, video, and data service issues
 * Support data center network infrastructure, virtualization environments, infrastructure upgrades, and expansion projects
 * Implement network security controls, apply security patches, and support disaster recovery and continuity initiatives
 * Provide technical recommendations, maintain network asset inventories, generate reports, and collaborate with cross-functional engineering teams, Keywords: Network Engineer, Network Specialist, Cisco IOS, Cisco NX-OS, Palo Alto Firewall, VPN, F5 Load Balancer, GTM, Big-IP DNS, TACLANE, GEMOne, LAN, WAN, Routing, Switching, BGP, VLAN, DNS, IPsec, TLS, SSH, Network Security, Incident Response, Windows, Linux, Data Center, NNSA, DOE, Top Secret Clearance, DOE Q Clearance, Washington DC, Government Contracting.
#LI-CG2
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