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