The Network Engineer 3 supports design, implementation, maintenance, and upgrades of complex networks, including LAN, CAN, WAN, and telecommunications systems. Requires Cisco experience, with desired skills in Arista, VMWare, Linux/Windows, and storage. Responsibilities include optimizing network performance, configuring solutions like VPNs, firewalls, VoIP, and NAT, managing network diagrams, resolving issues, and leading large projects. Candidates need a Master’s degree with 10+ years or a Bachelor’s with 12+ years of relevant experience, along with DoD 8570 IAT Level II certification and active security clearance with polygraph. The role offers a salary range of $210,000–$260,000, along with comprehensive benefits including healthcare, retirement, paid time off, professional development, and flexible work options. This position plays a vital role in supporting mission-critical IT infrastructure for government clients.