Network Adminstrator

Leidos currently has an opening for a Network Administrator to support a Department of War customer, onsite, in Fort Meade, Maryland.

This is an opportunity to join an experienced network operations team responsible for maintaining secure, reliable, and highly available infrastructure supporting critical customer systems. The ideal candidate will have solid hands‑on experience supporting enterprise network environments and be comfortable troubleshooting network connectivity, switching, routing, firewall, and VPN issues. This role is well suited for a mid‑level network professional who can independently handle day‑to‑day operational responsibilities while continuing to develop deeper network engineering and security skills.

Must be a U.S. Citizen and able to obtain and maintain the required DoW Secret clearance.

• Administer, maintain, and troubleshoot enterprise network infrastructure in a secure production environment.
• Support Cisco routing and switching infrastructure, including VLANs, trunking, routing protocols, access controls, and network connectivity.
• Perform configuration changes, software updates, and routine maintenance on network devices in accordance with established change management procedures.
• Support Palo Alto firewalls and Panorama, including policy updates, rule reviews, troubleshooting, and log analysis.
• Monitor network devices, firewall logs, alerts, availability, capacity, and performance to identify and resolve potential issues.
• Support and troubleshoot site-to-site and remote-access VPN connectivity.
• Troubleshoot network incidents involving connectivity, routing, switching, DNS, DHCP, firewall rules, access, and network performance.
• Perform initial analysis of network incidents and escape complex engineering issues when appropriate.
• Participate in incident and problem management activities, including identifying root causes and documenting corrective actions.
• Work within a hybrid, multi-location operations team supporting existing production environments.
• Coordinate with server, virtualization, cybersecurity, application, and other infrastructure teams to troubleshoot issues spanning multiple technologies.
• Manage incidents, service requests, change requests, and problem tickets through their full lifecycle.
• Perform network health checks and review performance data to identify trends or potential issues.
• Maintain accurate network diagrams, device inventories, configuration documentation, troubleshooting procedures, and knowledge articles.
• Provide clear status updates for incidents, maintenance activities, and ongoing technical issues.
• Assist senior network engineers with network upgrades, migrations, refresh activities, and implementation of new technologies.
• Identify opportunities to improve operational processes, monitoring, automation, and overall network reliability.
• Participate in scheduled maintenance activities and provide after‑hours or on‑call support as required.

• Bachelor's degree with 4+ years of relevant network administration/network operations experience; additional relevant experience may be considered in lieu of a degree.
• Hands‑on experience administering and troubleshooting enterprise Cisco routing and switching environments.
• Working knowledge of TCP/IP, VLANs, subnetting, routing, switching, DNS, DHCP, NAT, ACLs, and VPN technologies.
• Experience troubleshooting network connectivity and performance issues using standard network diagnostic tools.
• Working knowledge of enterprise firewall technologies.
• Hands‑on Palo Alto PAN‑OS and Panorama experience.
• Experience with Global Protect remote access and VPN.
• Understanding of ITIL‑based incident, request, problem, and change management processes.
• Abi…