Network Engineer III will design, implement, and maintain enterprise network infrastructure for a DoD environment, configuring and troubleshooting routers, switches, firewalls, and security devices. The role requires hands-on expertise in TCP/IP, OSPF, VLANs, IPsec, and network segmentation, with responsibility for vulnerability remediation, STIG compliance, and RMF requirements.… The engineer will coordinate cross-functional teams to resolve connectivity and interoperability issues, maintain network documentation and baselines, and support system integrations and upgrades in classified or highly regulated DoD networks. A Secret-level DoD security clearance is required, along with 5–7 years of progressive network engineering experience and Security+ certification.