• Sr Principal Systems Administrator

    Northrop Grumman (Aurora, CO)
    …and Sharepoint sites for documentation + DoD 8570 Certification in a primary OS ( Windows , Linux, Cisco) + Currently valid Security + CE, CASP, CISSP, or similar ... to, the following:** + Perform as a Linux and Windows System Administrator on large government contracts. + Perform...user and computer accounts and modify file permissions and security access lists. + Maintain security audit… more
    Northrop Grumman (11/13/25)
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  • Senior End User Engineer

    Fiserv (Omaha, NE)
    … Windows Operating System Management **:** Install, configure, and maintain Windows operating systems, including updates, security patches, and software ... Senior End User Engineer **About your role:** The End User Computing Windows Engineer is responsible for providing technical support, maintenance, and optimization… more
    Fiserv (12/20/25)
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  • IT Systems Administrator / Top Secret / Onsite:…

    Lockheed Martin (Las Vegas, NV)
    …Systems Administration across multiple platforms including RHEL, Windows Server, and Windows 10\. Active Top Secret Security Clearance and US Citizenship ... Secret \(U\.S\. Citizen\) * Must have a non\-expired CompTIA Security \+ certification * Experience with Windows ...CompTIA Security \+ certification * Experience with Windows Operating Systems \(i\.e\., Windows Server 2016,… more
    Lockheed Martin (10/18/25)
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  • Security Software Engineer

    SpaceX (Redmond, WA)
    …APIs, HTTP-RPC, and REST + Familiarity with enterprise security controls and security best practices for Windows , Linux, and Mac systems + Effective ... Security Software Engineer Redmond, WA Apply SpaceX was...with secure code development practices + Experience with Linux, Windows , and Mac system internals + Proficient experience with… more
    SpaceX (12/17/25)
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  • Security Control Assessor

    BOOZ, ALLEN & HAMILTON, INC. (San Antonio, TX)
    …+ Experience with data broker technologies such as Cribl or Confluent, operating system security events such as Windows or Linux, and networking protocols such ... Security Control Assessor Key Role: Design, implement, and...including Switch, Router, or NGFW, Red Hat, Palo Alto, Windows Server, or Windows Workstation + Knowledge… more
    BOOZ, ALLEN & HAMILTON, INC. (12/06/25)
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  • IT Sys Admin (RMF / Security ) / Top Secret…

    Lockheed Martin (Palmdale, CA)
    …an active DoD Top Secret \(U\.S\. Citizen\) * Must have a non\-expired CompTIA Security \+ certification * Experience with Windows Operating Systems \(i\.e\., ... Palmdale, CA facility\. This Systems Administrator role will focus heavily on RMF and Security \. The selected candidate will function as part of the IT support team;… more
    Lockheed Martin (10/18/25)
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  • Systems Engineer III

    Noblis (Chantilly, VA)
    …implementation with security controls for classified workloads + Linux and Windows operating systems with security hardening for classified use + ... across highly sensitive environments. You will ensure the reliability, security , and robustness of mission-critical infrastructure while meeting the stringent… more
    Noblis (12/22/25)
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  • Deputy Cybersecurity Manager

    BAE Systems (Sterling, VA)
    …to automate security processes + Familiarity with operating systems (eg, Windows , Linux) and network security tools like firewalls, IDS/IPS, and antivirus ... you will have the opportunity to work on a wide range of security issues, including architectures, firewalls, electronic data traffic, and network access. You will… more
    BAE Systems (10/30/25)
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  • Associate System Administrator

    Lockheed Martin (Littleton, CO)
    …obtain TS/SCI Clearance to be considered for this position **Desired Skills:** * Windows and Linux OS patching/ security hardening in a classified environment * ... **Description:** What We Do: The Trusted Security Solutions \(TSS\) program is the beating heart...Day to day Operations - Monitor, maintain, and support Windows /Linux servers, virtualization platforms, and storage systems supporting TSS\.… more
    Lockheed Martin (12/18/25)
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  • Systems Administrator (Day Shift)

    General Dynamics Information Technology (Fort Belvoir, VA)
    …IT Infrastructure and Operations **Skills:** System Administration,Unix System Administration, Windows System Administration **Certifications:** CompTIA Security + ... resolution support for trouble calls, and provide TIER 2/3 support of Unix/ Windows workstations and servers, including Web servers, network attached storage devices,… more
    General Dynamics Information Technology (12/18/25)
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