Sr Principal Linux Systems Administrator - Polygraph
Confirmed on the employer's own hiring board on Nov 10, 2026. First seen by Alion on Nov 3, 2026. Northrop Grumman scores B on the Alion truth index.
Description
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 CIDO team is seeking a Sr Principal Computer Systems Analyst (Sr Principal Linux Systems Administrator) to support information system lifecycle activities. The selected candidate will be required to work on-site, full-time at our Linthicum, MD location, and MUST possess a current TS/SCI to include a current and recently adjudicated Counter Intelligence Polygraph in order to be considered.
The responsibilities of this role include, but are not limited to, the following:
- Perform as a Sr Principal Computer Systems Analyst - Linux in support of classified government contracts.
- Exhibits good communication skills, an energetic approach, and patience with customers.
- Establishes and maintains high levels of customer satisfaction according to defined objectives while adhering to established policies.
- Report task statuses as required for all recurring and non-recurring efforts in written and oral format.
- Able to support multiple networks, ensuring necessary Linux administration tasks are completed; coordinating with others as necessary, working under minimal direction.
- Maintain operations of multi-user computer systems working with system engineers, PC desktop technicians, networking engineers, project managers, end users, and IT/Cyber management.
- Assist with review of internal customer requirements, making recommendations for hardware, software, system component purchases.
- Maintain and provide reliability of systems through installation, upgrading/patching, monitoring, problem resolution, and configuration management.
- Provide and maintain backup and recovery services; manage file systems and disk space; manage virus protection on a routine basis.
- Test new releases of products to ensure compatibility and minimize user impact.
- Develop and maintain technical documentation of system processes and procedures.
- Adhere to strict Information Systems security guidelines in all cases, supporting Computer Security with inputs to documentation, as required.
- Maintain security audit and logging information on all classified networked and standalone computers as directed by the Information Systems Security Manager (ISSM).
- Work across disciplines to isolate issues between software, firmware, and hardware, between software and operating systems, between networks and applications, and between one-time events and recurrent systematic problems.
- Support environments by means of ticketing requirements systems (ServiceNow, JIRA, etc.)
- Raises issues that require senior level attention or involvement.
- 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.
Basic Qualifications:
- 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
- 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
- Must have Linux server Operating Systems support experience (RHEL)
- Must have Linux Workstation and Server management experience (RHEL)
- Candidates must have a current US Government Top Secret level security 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 Information Technology, a Security+ CE, a Linux+ or RHCSA, and 9 years of Linux Server Administration experience in a classified environment
- Understanding of basic networking, including subnets, routing, and VLANs; Cisco experience and/or certification
- Windows server management experience
- Windows AD, LDAP, VMWare, and knowledge of SAN storage systems
- VMWare experience with current version
- Experience with Atlassian tools such as Jira and Confluence
- Experience with DevOps architecture such as Kubernetes, Nexus, Harbor, Docker, GitLab, etc.
- Knowledge of environmental monitoring tools (HBSS/Solar Winds/Splunk)
- Rudimentary Scripting experience
- Experience with the creation and deployment of system images in an enterprise environment
- Experience with Certification & Accreditation process
- Experience operating under, and managing systems within, NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG information system environments
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: $123,400.00 - $185,000.00The 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.