Network Engineer Tier 3

Zachary Piper Solutions is seeking a Network Engineer Tier 3 to support a leading provider of information technology products and services for U.S. Government agencies. The Network Engineer Tier 3 will be responsible for implementing, delivering, and monitoring technical support for customer environments; managing and maintaining inventories of client systems; and providing support for operating systems, desktop peripherals, software, core applications, and computer imaging.

This position will be on‑site in Washington, DC.

• Install, configure, and maintain LAN/WAN infrastructure, including routers, switches, VPNs, load balancers, and security devices.
• Apply security patches and enforce protocols across network devices and systems.
• Monitor and optimize network performance using management tools; troubleshoot and resolve issues promptly.
• Maintain accurate inventory of network assets and manage lifecycle tracking.
• Provide design input and technical support during engineering meetings and network projects.
• Manage data center network infrastructure and assist with storage, virtualization, and infrastructure improvements.
• Stay current on emerging technologies, trends, and best practices in networking and security.
• Troubleshoot outages affecting voice, video, and data services; schedule upgrades and optimizations.
• Demonstrate expertise in routing, switching, firewall configuration, and secure LAN/WAN support.
• Support Linux/Unix and Windows systems, ensuring integration with network services.
• Prepare detailed reports on network performance, incidents, and upgrades.
• Act as primary client contact for hardware/software inquiries and issue resolution.
• Collaborate with cross‑functional teams on complex technical issues and disaster recovery planning.
• Lead or assist in network/system projects, ensuring timely completion and adherence to objectives.
• Perform additional tasks as assigned to support team and organizational goals.

• Strong customer service skills with the ability to understand and interpret client requirements.
• Hands‑on experience configuring Cisco routers and switches (IOS/NX‑OS), Palo Alto Next Gen Firewalls, VPNs, and working with General Dynamics Taclanes and/or GEMOne.
• Knowledge of F5 Load Balancers, including GTM and Big DNS.
• Technical proficiency with Windows and Unix/Linux operating systems, network security, traffic analysis, incident response, vulnerability assessment, packet analysis, and system hardening.
• Solid understanding of Layer 2 switching, Layer 3 routing protocols, and encryption/communication protocols such as TLS/SSL, IPsec, SSH, BGP, VLAN, LLDP, LACP, ARP, 802.1x, DNS, AES, NTP.
• Experience in network design, implementation, troubleshooting, and performance tuning.
• Ability to manage multiple projects and meet deadlines effectively.
• Must hold or be able to obtain DOE Q Clearance OR Top Secret Clearance.

• Salary Range: $150,000 – $170,000
• Comprehensive Benefits:
  • Medical/Dental/Vision Coverage
  • Additional United Healthcare Resources
  • Employee Discount Program through Benefit Hub

This job opens for applications on [1.20.26]. Applications for this job will be accepted for at least 30 days from the posting date.