• Sr . Software Engineer TS/SCI Polygraph

    Leidos (Alexandria, VA)
    …canonicalization, digital signatures). Must have experience developing on Windows, and/or Linux operating systems . Must have documented professional experience ... **Description** Leidos has an exciting opportunity for a Sr . Software Engineer! *Must have an active TS/SCI Polygraph up front. No exceptions.* You will perform… more
    Leidos (09/10/25)
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  • System Administrator

    Assertive Professionals (Chantilly, VA)
    …change requests; support for implementation, troubleshooting and maintenance of Unix/ Linux systems ; Perform technical evaluations, analysis, and troubleshooting ... maintain servers. Manage day-to-day operations, monitoring and problem resolution of Linux systems . Activities include installation and maintenance of operating… more
    Assertive Professionals (10/09/25)
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  • Systems Administrator II Generalist…

    V2X (Springfield, VA)
    …platforms, but there are also Linux distributions as well. + The Senior Systems Administrator II shall support the mid-level internal escalation tier(s) for ... challenges with integrity, respect, responsibility, and professionalism. We are hiring a Senior Systems Administrator II Generalist - Windows Server - active… more
    V2X (11/15/25)
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  • Senior Cloud Engineer

    Leidos (Arlington, VA)
    …containerization and orchestration (eg, Docker, Kubernetes). + Solid understanding of networking, Linux /Unix systems , and version control systems (eg, Git). ... **Description** The Leidos Digital Modernization Sector is seeking a highly capable Senior Cloud Engineer to spearhead cloud initiatives for the DHS CISA in… more
    Leidos (11/18/25)
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  • Senior Cloud Engineer

    CACI International (VA)
    …Tenable products + 3 Years of Experience deploying, automating, and hardening Red Hat Linux Operating Systems + 3 years of experience working directly with ... Senior Cloud Engineer Job Category: Information Technology Time...they need it. Join alongside an Information Technology (IT) Systems Engineering team supporting the Department of the Air… more
    CACI International (10/15/25)
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  • Sr Principal Cybersecurity Analyst/Network…

    Northrop Grumman (Chantilly, VA)
    …join our diverse team of engineers, system administrators, and operators as a Sr . Principal Cyber Systems Engineer professional in Chantilly, VA. The successful ... including but not limited to Standard Operating Procedures and VISIO diagrams. ** Senior Principal Cyber Systems Engineer Basic Qualifications:** + Must have… more
    Northrop Grumman (10/02/25)
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  • Senior System Administrator (C)

    SimIS Inc. (Dahlgren, VA)
    …computer system network administration activities. + Experience in Microsoft Windows computer operating systems , LINUX operating systems , CISCO Systems , ... and win as a team). SimIS Inc seeks a Senior System Administrator to provide combat system simulation support...a business, technical or engineering field. + Certification in LINUX operating systems + Cisco Certified Network… more
    SimIS Inc. (11/06/25)
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  • Sr Specialist, RUST Software Developer

    L3Harris (Herndon, VA)
    …(primarily RUST, C/C++, and Python developing code for embedded real time operating systems (VxWorks, Linux , Integrity)). + Travel >30% to another L3Harris ... in the interest of national security. Job Title: : Sr Specialist, RUST Software Engineer Job Code : 30541...more than 100 countries. Job Description: L3Harris Integrated Mission Systems is seeking an experienced Software Engineer with a… more
    L3Harris (11/01/25)
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  • Systems Administrator

    CGI Technologies and Solutions, Inc. (Arlington, VA)
    …with the ability to obtain a TS/SCI with Poly highly desired * Operating Systems : Strong knowledge of Windows, Linux , or other relevant operating systems ... and adapt to new technologies and evolving IT environments. Senior : * Education and/or Experience: Bachelor's degree and/or 2...obtain a TS/SCI with Poly highly desired * Operating Systems : Strong knowledge of Windows, Linux , or… more
    CGI Technologies and Solutions, Inc. (10/01/25)
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  • Senior DevOps Engineer

    CACI International (Chantilly, VA)
    …years' experience in a technical / development role + Demonstrated experience with Linux operating systems , preferably RedHat Linux + Demonstrated experience ... Senior DevOps Engineer Job Category: Engineering Time Type:...evaluation of signals intelligence, radar, and communications prototype development systems , related software systems , and development environments… more
    CACI International (11/07/25)
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