• System Administrator

    CACI International (Annapolis Junction, MD)
    …proper application of security patches (IAVA) and maintain accurate tracking in systems of record + Conduct detailed system analysis and capacity planning + ... System Administrator Job Category: Information Technology...and Windows systems and networking + Coordinate system changes with ISSO and ISO, and… more
    CACI International (10/30/25)
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  • National Security Sector Referrals

    Leidos (Reston, VA)
    …Engineer/Embedded Engineer + Systems Administration - Linux + Information Security Systems Engineer/Officer (ISSE/ ISSO ) + Data Scientist + Systems ... **Leidos** has new and exciting opportunities in our **National Security Sector's** **(NSS) Cyber & Analytics Business Area (CABA)**...the fiscal year ended January 3, 2025. For more information , visit www.Leidos.com . **Pay and Benefits** Pay and… more
    Leidos (10/18/25)
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  • Cyber Security Analyst

    ManTech (Herndon, VA)
    …RMF (Risk Management Framework) NIST 800-53, NISPOM, and ICDs for cybersecurity and information security protocols to drive tasking and ensure compliance + ISSE/ ... ISSO tasking in support of documenting and navigating the...security , Cloud principles and engineering + Expert in System Accreditation process and protocols within the Intelligence Community… more
    ManTech (08/20/25)
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  • Linux System Administrator

    CACI International (Sarasota, FL)
    Linux System Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: ... characterize, and predict threats to national and allied space systems . You will participate in system design...least one of the following certifications: + A+ CE, CCNA- Security , CND, Network+ CE, SSCP, CCNA Security ,… more
    CACI International (10/04/25)
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  • Modernization Accelerator: 2025 Hiring Alert…

    Lockheed Martin (Hanover, MD)
    …* Software development * Software engineering * Cyber researchers \(Capabilities Analyst, etc\) * System Security \( ISSO / ISSE / ISSM\) * Technical writer ... general systems engineering experience OR * A Bachelor's degree in Systems Engineer, Computer Science, Information Systems , Engineering Science,… more
    Lockheed Martin (09/25/25)
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  • System Administrator

    Koniag Government Services (Winchester, VA)
    …designing pipelines and deploying builds + Comprehensive knowledge of Information Security concerns - working with ISSO to address ATO requirements ... a Koniag Government Services company **,** is seeking a System Administrator with a Top-Secret Security clearance...off, and more. This position is for an experienced System Administrator to support the FBI's Information more
    Koniag Government Services (09/15/25)
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  • Lead Cybersecurity Engineer

    SAIC (El Segundo, CA)
    …vulnerability assessment, and secure system development. - DoD 8140 (722) Information Systems Security Manager - Intermediate certification, such as: ... **Description** SAIC is seeking a **Lead Cybersecurity Engineer / Information Systems Security Manager (ISSM)**...Bachelor's degree in Computer Science, Information Assurance, Information Security System Engineering, or… more
    SAIC (10/31/25)
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  • Senior Specialist, Cyber Intelligence

    L3Harris (Palm Bay, FL)
    …FL Job Description: Performs ISSO duties under the guidance of the Information System Security Manager (ISSM) on assigned government-authorized ... control deficiencies; conducting, documenting and reporting annual self-assessments; maintaining operational information security posture for a system ,… more
    L3Harris (10/03/25)
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  • Sr. Specialist Cyber Infrastructure Engineer

    L3Harris (Carlsbad, CA)
    …DoD environments. + Prior experience serving as Information System Security Manager (ISSM) or lead ISSO supporting multiple classified enclaves under ... discipline and a minimum of 8 years of progressive experience in cybersecurity, information assurance, or system security engineering within defense or… more
    L3Harris (11/01/25)
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  • System Administrator

    ManTech (Eglin AFB, FL)
    **MANTECH** seeks a motivated, career and customer-oriented ** System Administrator** to join our Air Force / Space team at **Eglin AFB** . The System ... include, but are not limited to:** + Determining hardware, software, and systems specifications, and configuration requirements. + Execution of the patching, fixing,… more
    ManTech (10/30/25)
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