Network Engineer Tier 3

Zachary Piper • Washington, District of Columbia • Posted July 02, 2026

Position Overview

Zachary Piper Solutions is seeking a Network Engineer Tier 3 (Top Secret) to join a NNSA Program located in Washington, DCthrough % full onsite presence. The Network Engineer Tier 3 (Top Secret)will provide expert-level support for LAN/WAN infrastructure, network security, & system integration. The role involved configuring & optimizing complex networks, using technologies like Cisco, Palo Alto, & F5, while ensuring secure, high-performance operations across critical federal environments.

Responsibilities of the Network Engineer Tier 3 (Top Secret) include:

  • Design, Configure, & Maintain Network Infrastructure: implement and optimize LAN/WAN systems including routers, switches, firewalls, VPNs, and load balancers (Cisco, Palo Alto, F5)
  • Monitor and Troubleshoot Network Performance: use network management tools to analyze traffic, resolve outages, and ensure high availability across voice, video,...