• Systems Administrator

    TekSynap (Philadelphia, PA)
    …software. + Diagnose and recommend fixes to problems or potential problems with the network and its hardware, software, and systems . + Ensure the stable ... operation of the computer software systems and network connections. + Plan, develop,...+ DoD Approved 8570 Baseline Certification: Category IAT Level II + Milestone Certified Design Engineer (MCDE)… more
    TekSynap (09/27/25)
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  • Linux System Administrator

    ManTech (Laurel, MD)
    …+ Configure and manage Linux operating systems . Installs/loads operating system software, troubleshoots maintains integrity and configures network components ... for implementation, troubleshooting and maintenance of Information Technology (IT) systems . + Manage IT system infrastructure and...or university with 12+ years of experience as a System Engineer supporting programs and contracts of… more
    ManTech (10/22/25)
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  • IT Systems Administrator and Security…

    Three Saints Bay (Newport, RI)
    …the AIMTC leadership + Monitor system performance, troubleshoot issues, and optimize system operations for systems that AIMTC is responsible for every 4 ... and technical support for establishment, test, upgrade, and operational support of systems , network , workstations, and support equipment hardware and software… more
    Three Saints Bay (10/28/25)
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  • Senior Cloud Information System Security…

    ManTech (Washington, DC)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior Cloud Information System Security Officer (ISSO)** to join our team in **Washington, DC.** ... for each IS + Provide liaison support between the system owner and other IS security personnel + Ensure...**Minimum Qualifications:** + 7+ years' experience as an Information Systems Security Officer (ISSO) or similar role at a… more
    ManTech (10/11/25)
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  • Information System Security Officer,…

    Lockheed Martin (Herndon, VA)
    system hardening, analysis, vulnerability management, DISA STIGs\. \- Prior Information System Security Engineer \(ISSE\) or System Administration ... obtain a CI polygraph\.** This position will perform duties as an Information Systems Security Officer at the Lockheed Martin Space facility in Herndon, Virginia\.… more
    Lockheed Martin (08/08/25)
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  • Azure Virtual Desktop (AVD) System

    CACI International (VA)
    network , application, and infrastructure. + Experience with securing systems by following STIGs, best practices, and government/compliance requirements (such as ... Microsoft System Center Configuration Manager (SCCM/MECM). + Experience with network traffic analysis / troubleshooting. + Experience with best practices for the… more
    CACI International (10/16/25)
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  • Information Systems Security Officer (ISSO)…

    Lockheed Martin (Orlando, FL)
    **Description:** Lockheed Martin is seeking a seasoned **Information Systems Security Officer \(ISSO\)** to safeguard our systems against emerging threats and ... role you will implement and test state of the art secure operating systems , networks, and database solutions, conduct risk assessments, and provide expert guidance… more
    Lockheed Martin (10/25/25)
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  • Information Systems Security Officer,…

    Lockheed Martin (King Of Prussia, PA)
    …\- Experience applying ICD 503 on diverse computing platforms\. \- Prior Information System Security Engineer \(ISSE\) or System Administration experience\. ... CI polygraph\.** This position will perform duties as a Classified Cybersecurity Information Systems Security Officer \(ISSO\) for systems located at the LM… more
    Lockheed Martin (10/12/25)
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  • Mid System Administrator

    Parsons Corporation (Quantico, VA)
    …smooth operation of multi-user computer systems , including coordination with network engineers. + Monitors and manages system resources, including CPU ... resources. **What Required Skills You'll Bring:** + CompTIA Security+ CE (IAT Level II ) - Baseline DoD IA certification for system administrators. + RHCSA… more
    Parsons Corporation (08/16/25)
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  • Senior Systems Administrator (S)

    SimIS Inc. (Dahlgren, VA)
    …listed position and is contingent upon award. Job Description: SimIS, Inc. seeks a Senior Systems Engineer to lead systems engineering activities for a US ... This position provides technical leadership for complex simulation and training systems including requirements analysis, system integration, verification and… more
    SimIS Inc. (09/22/25)
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