> Markdown version of [/jobs/ext/1973381-network-administrator](https://www.wearedevelopers.com/jobs/ext/1973381-network-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Administrator - **Company:** Nabout Leidos - **Location:** United States - **Experience:** Expert - **Salary:** $92,300.0 - $166,850.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Amazon Web Services, Microsoft Azure, Border Gateway Protocol, Cisco PIX, Cisco Routers, Complex Networks, CompTIA Security+, Computer Networks, Continuous Integration, Dynamic Host Configuration Protocol, Domain Name System (DNS), Enhanced Interior Gateway Routing Protocol, Python (Programming Language), Network Security, Multicasting, Network Architecture, Network Monitoring, Network Segmentation, Network Administration, Cisco Nexus Switches, Open Shortest Path First (OSPF), Windows PowerShell, Scrum Methodology, Remote Access Technology, Ansible, Zero Trust Network Access, TCP/IP, Virtual Local Area Networks, Load Balancing, Software Troubleshooting, HybridCloud, Firewalls (Computer Science), Information Technology, Patch Management, Fortinet, Open Network Automation Platform, Devsecops, Cisco, Vmware - **Published:** August 7, 2026 - **Apply:** https://jobs.military.com/career/301469/sr-network-administrator-maryland-md-gaithersburg ## About the Role * Install, configure, and support Cisco routers, switches, firewalls, load balancers, and other network infrastructure components.\n, * US citizenship is required per contract.\n * Bachelor's degree in Computer Science, Engineering, Information Technology or related field and 8-12 years of prior relevant experience or Master's with 6-10 years of prior relevant experience.\n * 8+ years of network administration experience.\n * CompTIA Security+, and Cisco Certified Network Associate (CCNA) or Network Professional (CCNP), or equivalent certification.\n * Experience supporting large-scale, mission-critical network environments.\n * Strong expertise with Cisco routing and switching technologies.\n * Thorough understanding of:\n \n + TCP/IP\n + OSPF, BGP, EIGRP\n + VLANs\n + DNS/DHCP\n + VPN technologies\n + NAT\n + QoS\n + Multicast\n \n * Experience administering enterprise firewalls such as Cisco ASA, Palo Alto, or Fortinet.\n * Experience with network monitoring and performance management tools.\n * Strong troubleshooting, analytical, and problem-solving skills.\n * Excellent communication skills and the ability to collaborate across technical disciplines.\n * Experience working in Agile or Scrum environments.\n, * Cisco CCNP, CCIE, or equivalent certification.\n * CompTIA Security+ CE (or DoD 8570/8140 compliant certification).\n * Experience supporting Intelligence Community or Department of Defense customers.\n * Experience with AWS, Azure, or hybrid cloud networking.\n * Knowledge of Software Defined Networking (SDN).\n * Experience with network automation using Python, Ansible, or PowerShell.\n * Familiarity with Zero Trust Architecture and micro-segmentation.\n * Experience with DevSecOps and Infrastructure as Code (IaC).\n * Experience with VMware NSX or Cisco ACI.\n * ITIL Foundation certification.\n ## Description As a Senior Network Administrator, you'll serve as a technical leader responsible for the administration, optimization, and security of enterprise network infrastructure supporting mission-critical operations.\n, * Collaborate with Agile Scrum teams to deliver infrastructure enhancements supporting continuous integration and rapid capability delivery.\n * Participate in sprint planning, backlog refinement, daily stand-ups, reviews, and retrospectives as the networking subject matter expert.\n * Monitor network performance, capacity, and availability while proactively identifying opportunities for optimization.\n * Troubleshoot complex network issues, perform root cause analysis, and implement long-term corrective actions.\n * Implement and maintain secure network architectures in accordance with Intelligence Community security requirements and best practices.\n * Support cloud connectivity, hybrid networking, and infrastructure modernization initiatives.\n * Develop and maintain network documentation, topology diagrams, standard operating procedures, and configuration baselines.\n * Coordinate hardware refreshes, software upgrades, maintenance windows, and patch management activities.\n * Partner with cybersecurity teams to address vulnerabilities, implement security controls, and support audits and accreditation activities.\n ## Related Videos - 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