• Senior Security Administrator

    Nightwing (Annapolis Junction, MD)
    …in the intelligence community, defense, civil, and commercial markets. Nightwing is seeking a ** Senior Security Administrator ** who will play a critical role ... Lead the design, implementation, management, and continuous improvement of enterprise-wide security systems and protocols. + Safeguard the confidentiality,… more
    Nightwing (12/29/25)
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  • Senior System Administrator

    St. George Tanaq Corporation (Suitland, MD)
    Senior System Administrator - Network Security WFH Flexible*Suitland, MD (http://maps.google.com/maps?q=Suitland+MD+USA) Job Type Full-time Description ... the Role** We are seeking a ** Senior System Administrator - Network Security **...a related field. + Professional Certifications such as CompTIA Security + or Certified Information Systems Security more
    St. George Tanaq Corporation (11/18/25)
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  • Senior Systems Administrator

    Leidos (Annapolis Junction, MD)
    **Description** **Leidos** has a new and exciting opportunity for a Senior Systems Administrator in our **National Security Sector's (NSS) Cyber & ... much more. **Join us and make a difference in National** ** Security !** As a Senior Systems Administrator you will play a vital role in maintaining the… more
    Leidos (11/15/25)
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  • Senior System Administrator

    St. George Tanaq Corporation (Suitland, MD)
    Senior System Administrator - Network Operation Center WFH Flexible*Suitland, MD (http://maps.google.com/maps?q=Suitland+MD+USA) Job Type Full-time ... about us, visit https://tanaq.com/tanaq-technical-services. **About the Role** We are seeking a ** Senior System Administrator - Network Operation Center** to… more
    St. George Tanaq Corporation (11/14/25)
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  • Senior Linux Systems

    Leidos (Camp Springs, MD)
    …and take ownership of our critical Red Hat Enterprise Linux environment. As a Senior System Administrator , you'll be instrumental in designing, implementing, ... 8140 IAT Level II (Intermediate or Advanced) certificate (CompTIA Security + or Systems Security Certified...(SSCP)). + Training (DISA-US1384 DCWF Linux System Administrator / DISA-US1390 DCWF Windows Systems more
    Leidos (12/20/25)
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  • Senior Unix System

    SMX (Patuxent River, MD)
    Senior Unix System Administrator (4608)at SMX(View all jobs) (https://www.smxtech.com/careers/) Patuxent River, MD SMX is seeking a driven and experienced ... of mission-critical systems across Department of Defense (DoD) networks. The Senior UNIX Administrator will ensure systems are properly patched and… more
    SMX (12/04/25)
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  • Senior Linux System

    Black Bear Technology Solutions, LLC (Adelphi, MD)
    Senior Linux System Administrator Clearance Required: Top Secret or Secret Clearance Locations: Adelphi, MD (Onsite) Position Overview: The Senior Linux ... System Administrator is responsible for leading system administration activities. This position oversees the installation, configuration, maintenance, and… more
    Black Bear Technology Solutions, LLC (11/21/25)
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  • Linux System Administrator

    Link Solutions Inc (Aberdeen Proving Ground, MD)
    …for CMMI ML3 for Services and Development. Link Solutions is seeking a Linux System Administrator ( Senior -Level) to join our team at Aberdeen Proving ... active DoD Top Secret Clearance. + Non-remote (relocation incentive available) Our Linux System Administrator ( Senior -Level) will be responsible for the… more
    Link Solutions Inc (10/08/25)
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  • Senior Systems Administrator

    SMX (Patuxent River, MD)
    Senior Systems Administrator (4521)at SMX(View all jobs) (https://www.smxtech.com/careers/) Patuxent River, MD SMX is looking for a highly motivated ** ... Senior Systems Administrator ** with demonstrated...performing the functional duties for this position + Operating System certificate (Linux) and COMPTIA Security +… more
    SMX (12/12/25)
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  • Senior System Administrator

    DCCA (Columbia, MD)
    Senior System Administrator Location Columbia, MD Job Code 2215 # of Openings 1 Apply Now ... compensation and benefits package. Visit our website at: www.dcca.com Senior System Administrator Candidate must...linked to a host workstation, or mainframe. Responsible for system security and data integrity. Assigns passwords… more
    DCCA (11/15/25)
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