Network Engineer - NE 1 TS/SCI Poly required

Network Engineer I – Cleared Position We are seeking a motivated and technically strong Network Engineer to support secure enterprise and datacenter network environments within a high-availability government infrastructure. The ideal candidate will have hands-on experience with Cisco-based networking technologies, network security, routing and switching, and enterprise troubleshooting in mission-critical environments. This role supports installation, configuration, monitoring, maintenance, and troubleshooting of enterprise network infrastructure including routers, switches, firewalls, VPN technologies, and virtualization platforms. Candidates should be comfortable operating in fast-paced operational environments and supporting live production systems. Responsibilities Install, configure, maintain, and troubleshoot enterprise network infrastructure Support LAN, MAN, and datacenter network environments Configure and support Cisco routers, switches, firewalls, and VPN technologies Monitor and troubleshoot routing, switching, and TCP/IP connectivity issues Support network security boundaries, ACLs, and stateful firewall policies Perform physical installation and cabling of network hardware Support load balancers, SAN connectivity, and virtualization networking Utilize ticketing systems such as Remedy to track and document work activities Participate in on-call rotation and operational support activities Work within live production environments with minimal supervision Collaborate with engineering and security teams on infrastructure improvements Required Qualifications 3+ years of network engineering experience with a degree, or 5+ years without a degree Experience supporting enterprise or datacenter network environments Strong understanding of TCP/IP protocol stack Strong knowledge of Layer 2 and Layer 3 networking protocols Experience with routing and switching technologies Hands-on experience with Cisco networking equipment and operating systems Experience with firewalls, VPNs, and network access controls Experience troubleshooting enterprise network connectivity issues Ability to support operational and on-call requirements Technical Experience Experience with one or more of the following technologies:Cisco IOSCisco NX-OS / CatOSCisco routers and switches Cisco ASA firewallsTACACS+VPN/IPSEC technologies Load balancers Fiber Channel SANInfinibandVMware virtualization Solaris Containers Atlassian Tool SuiteHP Open View Remedy ticketing systems Preferred Qualifications Experience with enterprise network architecture and datacenter design Experience supporting secure government or classified environments Familiarity with network monitoring and packet capture tools Experience with virtualization and cloud-connected infrastructure Strong troubleshooting and documentation skills Certifications Preferred Cisco Systems CCNACCNPSecurity+Other relevant networking or security certifications Clearance Requirement Active security clearance required Ability to maintain clearance eligibility throughout employment Work Environment Fast-paced enterprise operations environment Mission-critical infrastructure support On-call rotation required Hybrid of engineering, operational support, and infrastructure deployment responsibilities