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Principal Linux Systems Administrator - Polygraph

Northrop Grumman

Principal Linux Systems Administrator - Polygraph

Northrop Grumman logo

Northrop Grumman

full-time

Posted: January 2, 2026

Job Description

Perform as primary Linux Systems Administrator for a classified government contract. Support multiple networks while ensuring necessary administration tasks are completed and directing others as necessary. Analyze internal and external customer requirements and determine equipment and software requirements for solutions to problems by means of automated systems. Provide backup and recovery services, manage file systems and disk space, and manage virus protection on a routine basis. Develop and document technical processes and procedures as needed. Prepare security documentation for input to Computer Security. Work under minimal direction and independently determine and develop approach to solutions. Master's Degree with 3 years of relevant IT experience; OR a Bachelor's Degree with 5 years of relevant IT experience; OR an Associate's Degree with 7 years of relevant IT experience; OR a High School Diploma/GED with 9 years of relevant IT experience is required Must have a DOD 8570 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 Linux Workstation and Server management experience is required Experience operating under, and managing systems within, NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG information system environments Candidates must have a current DOD Top Secret level security clearance, to include SCI access and a recent Polygraph [adjudicated within the last 5 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 The ideal candidate will have a Bachelor's degree in Information Technology, a Security+ CE, a Linux+ or RHCSA, and 5 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 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

Locations

  • Linthicum, Maryland, United States

Salary

Estimated Salary Rangemedium confidence

125,000 - 185,000 USD / yearly

Source: rule based estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Required Qualifications

  • Master's + 3 years IT OR Bachelor's + 5 years OR Associate's + 7 years OR HS/GED + 9 years (experience)
  • DOD 8570 IAT Level II certification (Security+ CE or higher) (experience)
  • Current DOD Top Secret/SCI with recent Polygraph (within 5 years) (experience)
  • Linux server OS support experience (experience)
  • Linux Workstation and Server management experience (experience)
  • Experience in NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG environments (experience)
  • Bachelor's in IT, Security+ CE, Linux+/RHCSA, 5 years Linux admin in classified env preferred (experience)

Responsibilities

  • Primary Linux Systems Administrator for classified contract
  • Support multiple networks, complete administration tasks, direct others
  • Analyze customer requirements, determine equipment/software needs
  • Provide backup/recovery, manage file systems/disk space, virus protection
  • Develop/document technical processes/procedures
  • Prepare security documentation for Computer Security

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Northrop Grumman logo

Principal Linux Systems Administrator - Polygraph

Northrop Grumman

Principal Linux Systems Administrator - Polygraph

Northrop Grumman logo

Northrop Grumman

full-time

Posted: January 2, 2026

Job Description

Perform as primary Linux Systems Administrator for a classified government contract. Support multiple networks while ensuring necessary administration tasks are completed and directing others as necessary. Analyze internal and external customer requirements and determine equipment and software requirements for solutions to problems by means of automated systems. Provide backup and recovery services, manage file systems and disk space, and manage virus protection on a routine basis. Develop and document technical processes and procedures as needed. Prepare security documentation for input to Computer Security. Work under minimal direction and independently determine and develop approach to solutions. Master's Degree with 3 years of relevant IT experience; OR a Bachelor's Degree with 5 years of relevant IT experience; OR an Associate's Degree with 7 years of relevant IT experience; OR a High School Diploma/GED with 9 years of relevant IT experience is required Must have a DOD 8570 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 Linux Workstation and Server management experience is required Experience operating under, and managing systems within, NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG information system environments Candidates must have a current DOD Top Secret level security clearance, to include SCI access and a recent Polygraph [adjudicated within the last 5 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 The ideal candidate will have a Bachelor's degree in Information Technology, a Security+ CE, a Linux+ or RHCSA, and 5 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 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

Locations

  • Linthicum, Maryland, United States

Salary

Estimated Salary Rangemedium confidence

125,000 - 185,000 USD / yearly

Source: rule based estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Required Qualifications

  • Master's + 3 years IT OR Bachelor's + 5 years OR Associate's + 7 years OR HS/GED + 9 years (experience)
  • DOD 8570 IAT Level II certification (Security+ CE or higher) (experience)
  • Current DOD Top Secret/SCI with recent Polygraph (within 5 years) (experience)
  • Linux server OS support experience (experience)
  • Linux Workstation and Server management experience (experience)
  • Experience in NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG environments (experience)
  • Bachelor's in IT, Security+ CE, Linux+/RHCSA, 5 years Linux admin in classified env preferred (experience)

Responsibilities

  • Primary Linux Systems Administrator for classified contract
  • Support multiple networks, complete administration tasks, direct others
  • Analyze customer requirements, determine equipment/software needs
  • Provide backup/recovery, manage file systems/disk space, virus protection
  • Develop/document technical processes/procedures
  • Prepare security documentation for Computer Security

Target Your Resume for "Principal Linux Systems Administrator - Polygraph" , Northrop Grumman

Get personalized recommendations to optimize your resume specifically for Principal Linux Systems Administrator - Polygraph. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Principal Linux Systems Administrator - Polygraph" , Northrop Grumman

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

AerospaceDefenseTechnologyDefense

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