Principal Network Administrator - Polygraph
In short. Principal Network Administrator - Polygraph at Northrop Grumman: a full-time lead or staff-level role, on-site in Linthicum, MD. Posted salary: $99K – $148K. Asks for 3+ years of experience. Skills mentioned: Excel, CompTIA certifications, Firewalls, Routing & switching. Posted Nov 3, 2026, checked on the employer's site 38 min ago.
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Summary
The Northrop Grumman Classified Solutions team is seeking a Principal Networks Communications administrator to support information system lifecycle activities. The selected candidate will be required to work on-site, full-time at our Baltimore, MD location. This is not a remote/virtual position. The responsibilities of this role include, but are not limited to, the following:
Quoted from Northrop Grumman's description, not rewritten.
Skills mentioned
About the role
RELOCATION ASSISTANCE: No relocation assistance availableCLEARANCE REQUIRED FOR START: YesCLEARANCE TYPE: PolygraphTRAVEL: Yes, 10% of the TimeDescription
At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work — and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.At the heart of Defining Possible is our commitment to missions. In rapidly changing global security environments, Northrop Grumman brings informed insights and secure technological solutions to enable strategic objectives. We’re looking for innovators who can help us keep building on our wide portfolio of secure, affordable, integrated, and multi-domain systems and technologies that fuel those missions. By joining in our shared mission, we will support yours by expanding your personal network and developing skills, whether you are new to the field or an industry thought leader. At Northrop Grumman, you will have the resources, support, and team to do some of the best work of your career.
The Northrop Grumman Classified Solutions team is seeking a Principal Networks Communications administrator to support information system lifecycle activities.
The selected candidate will be required to work on-site, full-time at our Baltimore, MD location. This is not a remote/virtual position.
The responsibilities of this role include, but are not limited to, the following:
- Maintains smooth operation of classified network.
- Plans, designs, configures, and installs network hardware in support of customer requirements.
- Maintains technical expertise in all areas of networks and computer hardware and software interconnection and interfacing, such as routers, multiplexers, firewalls, switches, gateways, etc.
- Proposes solutions to management to ensure all communications requirements based on future needs and current usage, configuring such solutions to optimize cost savings.
- Creates and ensures that appropriate network documentation exists, including operational instructions.
- Provides regular monitoring and network analysis regarding short- and long-range planning for in-house systems.
- Perform troubleshooting analysis of network infrastructure and associated systems.
- Install and configure Cisco routers, switches and firewalls.
- Implement and troubleshoot LAN technologies such as VLANs, Trunking (port tagging), Spanning-Tree, and Port Security.
- Provide third-level support and troubleshooting of network problems.
- Able to design and implement an enterprise network. Experience with Microsoft Office, Visio, Project, PowerPoint and Excel.
- Ability to lift equipment weighing up to 40 pounds
- Ability to 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.
Basic Qualifications:
- Master's Degree with 3 years of IT experience; OR a Bachelor’s degree with 5 years of IT experience; OR an Associate’s degree with 7 years of IT experience; OR a High School Diploma/GED with 9 years of IT experience is required
- Must have work experience with maintaining LAN/WAN based networks, managing routing protocols on large LAN environments, and experience with Cisco hardware (routers, switches, and firewalls)
- Must have a 8140 (8570 equivalent) IAT Level II, or higher, certification (example: Security+ CE); maintaining the required certification will be a condition of continued employment
- Candidates must have a current US Government Top Secret levelsecurity clearance, to include SCI access and a current/recent Counter Intelligence Polygraph [adjudicated within the last 6 years],in order to be considered
- Candidates must have the ability to obtain, and maintain, access to Special Programs as a condition of continued employment
Preferred Qualifications:
- The ideal candidate will have a bachelor’s degree in an IT related field, a Network+ certificate, and a Cisco CCNA, as well as 3 years of Network 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
We offer flexible work arrangements, phenomenal learning opportunities, exposure to a wide variety of projects and customers, and a very friendly team environment. Our diverse portfolio of programs means there are endless paths to cultivate your career. We also offer exceptional benefits/healthcare, a 9/80 work schedule, and a great 401k matching program. Come join us!
Primary Level Salary Range: $98,900.00 - $148,300.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.
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