> Markdown version of [/jobs/ext/3447320-sr-principal-network-administrator-polygraph](https://www.wearedevelopers.com/jobs/ext/3447320-sr-principal-network-administrator-polygraph). 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). --- # Sr Principal Network Administrator - Polygraph - **Company:** Northrop Grumman - **Location:** Redondo Beach, CA, United States (Remote available) - **Experience:** Expert - **Salary:** $129,300.0 - $193,900.0 - **Contract:** Permanent contract - **Skills:** JIRA, Network Analysis, Complex Networks, Cyber Security, Computer Networks, System Configuration, Network Troubleshooting, Network Architecture, Network Planning and Design, Systems Integration, Wireshark, Wide Area Networks, Network Routers, Firewalls (Computer Science), Information Technology, SolarWinds (Software), OPNET (Software), Servicenow - **Published:** September 14, 2026 - **Apply:** https://dejobs.org/x/x/DC71495A436E4AAF88511A18D8F43387/job/ ## About the Role * Master's Degree with 6 years of relevant IT experience; OR a Bachelor's Degree with 8 years of relevant IT experience; OR an Associate's Degree with 10 years of relevant IT experience; OR a High School Diploma/GED with 12 years of relevant IT experience is required * Demonstrated experience designing and maintaining complex LAN/WAN based networks to include analysis, enhancements of routers, switches, and firewalls * Experience supporting Video Teleconferencing (VTCs), deploying audio/visual technologies in classified environments * Candidates must meet the U.S. Government 8140 requirements (8570 equivalent) for a Sr Principal Network Administrator - IAT Level II certification (example: Security+ CE, CCNA-Security, CND) * Candidates must have a current Top Secret / SCI clearance with a recent Counter-Intelligence Polygraph (at a minimum) in order to be considered * Candidates must have the ability to obtain, and maintain, access to Special Programs as a condition of continued employment, * The ideal candidate will have a Bachelor's degree Network Engineering, a Security+ CE, and either a CCNP or a CCIE certification, and 10 years of Network design, analysis, and administration of routers, switches, hubs, and firewalls * Experience in the use of network analysis tools (i.e. WireShark, SolarWinds, Opnet, etc.) would be nice to have * Experience with configuring TACLANES would be ideal * Previous experience troubleshooting network procedures and best practices; experience with network challenges associated with systems integration, including COTS integration, capacity analysis and system architecture design * Demonstrated leadership skills, or previous management of small teams, would be helpful ## Description The responsibilities of this role include, but are not limited to, the following: * Perform Sr. Network Communications activities in support of classified government contracts. * Define and execute long-term network architecture roadmaps, such as SDWAN, ZeroTrust, and cloud-enabled networking, ensuring alignment with enterprise security and compliance requirements. * Lead the design, integration, and implementation of large-scale, multidomain networks supporting classified missions, and oversee network migrations and cyber resilience initiatives. * Serve as a senior technical liaison to government customers and internal leadership, negotiating requirements, delivering status briefings, and participating in external technical forums, proposals, and procurement discussions. * Author, maintain, and enforce enterprise-wide network standards, policies, and security frameworks; regularly audit compliance and champion continuous improvement initiatives. * Provide advanced monitoring, analysis, and planning for network systems, coordinating third-party maintenance as needed and supporting environments through ticketing systems (e.g., ServiceNow, JIRA). * Deliver third-level technical support for complex network, hardware, software, and telecommunications issues * Develop innovative technical solutions to complex problems, support project designs, clarify requirements, and ensure solutions adhere to established standards. * Raise issues requiring management attention and measure performance against KPIs, implementing corrective actions to exceed operational standards. * Provide senior-level technical expertise by mentoring junior and experienced team members, fostering their professional growth and enhancing team capabilities. * Lifts and moves equipment up to 50 pounds. * Work after hours, and weekends, as needed. Note: Due to the classified nature of the work being performed, this position does not offer any virtual or telecommute working options. 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