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# Sr Principal Network Administrator - Secret

- **Company:** Northrop Grumman
- **Location:** Azusa, CA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $129,300 - $193,900
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, JIRA, Complex Networks, Cyber Security, Computer Networks, Linux, Network Troubleshooting, Network Architecture, Routing, SAP (Applications), Systems Integration, Wide Area Networks, Cisco, Servicenow
- **Published:** October 22, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9260189/sr-principal-network-administrator-secret

## About the Role

* Master's Degree with 6 years of relevant technical experience; OR a Bachelor's Degree with 8 years of relevant technical experience; OR an Associate's Degree with 10 years of relevant technical experience; OR a High School Diploma (or equivalent) with 12 years of relevant technical experience is required
 * Experience designing and maintaining complex LAN/WAN based networks to include analysis, enhancements of routers, switches, and firewalls
 * Candidates must meet the U.S. Government 8140 requirements (8570 equivalent) for a Linux/Windows Systems Administrator - IAT level II certification at a minimum (examples: Security+ CE, CND, CCNA Security, SSCP, GICSP, GSEC, CCISO)
 * Candidates must have a current U.S. Government Secret level security clearance (at a minimum) in order to be considered
 * Must have the ability to obtain and maintain a Top Secret level security clearance as a condition of continued employment

Preferred Qualifications:

 * Bachelor's degree Network Engineering
 * Experience supporting Video Teleconferencing (VTCs), deploying audio/visual technologies in classified environments
 * Active Secret, Top Secret, SCI, SAP/SAR access, or Polygraph
 * Security+ CE certification
 * Experience supporting Cisco Call Managers or other similar technologies
 * Experience designing, implementing, and managing largescale, multidomain network architectures; expertise in advanced routing, security, and mission critical systems
 * Experience with configuring TACLANES, and/or encryption solutions
 * Experience with Assessment & Authorization processes
 * Experience troubleshooting network procedures and best practices; experience with network challenges associated with systems integration, including COTS integration, capacity analysis and system architecture design
 * Evidence of published technical papers, patents, or internal knowledge-sharing contributions
 * Top Secret clearance

## Description

* 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. Applicants are encouraged to apply, only if they are willing to work on-site.