Network Engineer Tier 3
Listed on 2026-10-18
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IT/Tech
Network Engineer, Cybersecurity, Systems Engineer, Network Security
Zachary Piper Solutions is seeking a Network Engineer Tier 3 to support a company focused on advancing critical national security and enterprise infrastructure operations within the federal government. This position is on-site in Washington, DC
. The Network Engineer Tier 3 will provide advanced support for secure enterprise network environments, including design, implementation, optimization, troubleshooting, and security of complex LAN/WAN infrastructures. This is an opportunity to support mission-critical operations that help protect and maintain some of the nation's most important technology environments.
- Install, configure, maintain, and optimize enterprise LAN/WAN networks, including Cisco routers, switches, VPN solutions, load balancers, and security appliances
- Troubleshoot and resolve complex network, voice, video, and data service issues while monitoring network performance and implementing improvements
- Manage and support network security initiatives, including firewall administration, system hardening, patch management, and implementation of security best practices
- Support data center operations, virtualization environments, infrastructure expansion projects, backup solutions, and disaster recovery initiatives
- Collaborate with engineering teams and stakeholders on network design, upgrades, documentation, asset management, and infrastructure modernization efforts
- 7+ years of experience supporting enterprise network engineering, administration, and infrastructure operations
- Hands-on experience with Cisco routing and switching (IOS/NX-OS), Palo Alto firewalls, VPN technologies, F5 Load Balancers, GTM/Big-IP DNS, and General Dynamics TACLANE encryption devices
- Strong knowledge of Layer 2 and Layer 3 networking protocols including BGP, VLANs, LACP, LLDP, ARP, DNS, IPsec, TLS/SSL, SSH, 802.1X, and network performance tuning
- Bachelor's degree in Information Technology, Computer Science, Engineering, or a related technical field (or equivalent professional experience)
- Active DOE Q Clearance or Top Secret Clearance
Salary Range: Up to $175,000 depending on experience
Full Benefits Package: PTO, Paid Holidays, Medical, Dental, Vision, 401K, Tuition Reimbursement, Sick Leave as required by law
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Keywords: Network Engineer, Cisco, Cisco IOS, NX-OS, Palo Alto Firewall, VPN, TACLANE, General Dynamics, F5 Load Balancer, GTM, Big-IP DNS, BGP, LAN, WAN, Layer 2 Switching, Layer 3 Routing, Network Security, Data Center, Infrastructure Engineering, Linux, Unix, Windows, Performance Tuning, Enterprise Networking, Top Secret Clearance, DOE Q Clearance, Firewall Administration, Network Operations, Federal Government, Washington DC, Load Balancing, IPsec, VLAN, DNS, Systems Hardening, Incident Response
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