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Network Engineer Tier 3 with Security Clearance

Zachary Piper Solutions, LLCWashington, DC🇺🇸United StatesPosted Oct 15, 2026

Why This Role Stands Out

Leverage your expertise in secure enterprise networks to make a significant impact supporting critical national security operations, with a highly competitive $175,000 salary. This on-site role in Washington, DC is ideal for a seasoned Network Engineer with extensive Cisco and security appliance experience who thrives on complex problem-solving and advanced infrastructure design. Advance your career by joining a mission-focused team dedicated to protecting vital technology environments.

Quick Overview

Salary
$175k/yr
Seniority
Mid Senior
Work mode
On Site
Location
Washington, DC, United States
Posted
Yesterday
EncryptionLoad BalancingDNSiOS

Job Description

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. Responsibilities for the Network Engineer Tier 3 include:

  • 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 Required Qualifications for the Network Engineer Tier 3 include:
  • 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
Compensation for the Network Engineer Tier 3 include: 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 #LI-JB1 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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