NCIS Network Administrator (NetOps/ITSC) | Active TS/SCI clearance

Transform technology into opportunity as a Network Administrator (NetOps/ITSC) with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate. This position is pending contract award in late August / early September 2026 timeframe. The Naval Criminal Investigative Service (NCIS) is an organization of approximately 2,000 personnel of which 700 serve at HQ and the remaining staff serve at offices worldwide. NCIS is the DON component with primary responsibility for criminal investigation, law enforcement (LE), counter‑terrorism (CT), counterintelligence (CI), and cyber matters. NCIS not only has primary responsibility for all criminal investigative, CI, CT, and cyber matters within the DON, but it also has exclusive investigative jurisdiction in non‑combat matters involving actual, potential, or suspected criminal, terrorism, sabotage, espionage, and subversive activities. Meaningful work and personal impact As a Network Administrator (NetOps/ITSC), the work you’ll do at GDIT will be impactful to the mission of the NCIS ITD organization in Quantico, VA. Focus on providing essential support for the operation, maintenance, and security compliance of the enterprise network infrastructure. Responsibilities Monitoring the network, responding to alerts, troubleshooting basic network issues, and escalating complex problems to senior engineers. Perform routine network checks, addressing user‑reported network problems following established procedures, implementing security controls as directed by policy, participating in security audits, and ensuring network operations comply with relevant regulations and standards (e.g., DISA STIGs, NIST frameworks) under supervision. Assist with incident response activities, maintaining documentation of common network issues and solutions, managing the provisioning and operation of network resources based on defined processes, and collaborating with other IT teams to resolve issues. What you’ll need to succeed Bring your help desk expertise along with a drive for innovation to GDIT. Security Clearance Level: Active TS/SCI clearance. Required experience 5 years of increasingly complex and progressive experience in computer network engineering. 1 year of specialized experience related to the assigned task. Prior experience providing services of this type in a large government environment. Experience with CISCO Firepower, Palo Alto, and Juniper. Experience with TACLANEs, SolarWinds, IPAM, Kiwi Syslog Server, DHCP, ISE, ACI, NSX, TACACS, RADIUS, MAB, 802.1x, Event Manager Applet, Macro Creation, TFTP, SFTP, Splunk, Microsoft Visio, and Cisco Firewall Management Center. Experience with engineering data center and IP backbone networks in a multi‑vendor, multiprotocol environment, including networks based on various bandwidths to include T1, DS3, Fiber / Optical, DSL, Ethernet, ATM, Frame Relay, and Ethernet over Copper core, distribution, and access media including routers, switches and firewalls. Cisco Certified Network Professional (CCNA) is desirable. Experience with Bootable media creation (Rufus) and Cisco licensing. Required certifications CompTIA Security+ CE required. Cisco Certified Network Professional (CCNA) is desired. Education BS Degree in technical discipline. Location Onsite at Quantico, VA. Position availability Pending contract award in late August / early September 2026 timeframe. US citizenship required. #J-18808-Ljbffr General Dynamics