• Senior Linux - Windows

    ICF (Reston, VA)
    …. **Key Responsibilities:** + Administer and support both Linux and Windows operating systems , ensuring optimal system performance and adherence ... We are seeking a highly skilled, customer-facing Systems Administrator to support Linux and Windows environments for a critical Treasury program. The ideal… more
    ICF (10/02/25)
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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 ... standards. + Install, configure, and maintain software and operating systems . + Implement operating system enhancements for...DoD 8750 and 8140 compliance requirements Technical Environment: + Windows Server + MCEM + MAC OS + RHEL,… more
    Black Bear Technology Solutions, LLC (08/23/25)
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  • Systems Engineer SME- Linux - Active…

    General Dynamics Information Technology (Washington, DC)
    …ensure today is safe and tomorrow is smarter. Our work depends on a skilled Linux Senior Principal Systems Engineer joining our team to bring professionalism ... 15 + years of related experience **US Citizenship Required:** Yes **Job Description:** ** Senior Principal Systems Engineer - Linux ** Design, deploy,… more
    General Dynamics Information Technology (10/06/25)
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  • Senior Windows Engineer- Hybrid…

    Motion Recruitment Partners (Arlington, VA)
    Senior Windows Engineer- Hybrid Reston, VA Arlington, Virginia **Hybrid** Contract $70/hr - $80/hr Senior Windows Engineer This hands-on role involves ... + Act as a Subject Matter Expert for Cloud Operations, Cybersecurity, and Systems Administration teams. + Lead system analysis and infrastructure design… more
    Motion Recruitment Partners (08/15/25)
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  • Senior Systems Administrator

    General Dynamics Information Technology (Washington, DC)
    …teams. WHAT YOU WILL DO: Duties and Responsibilities: + Enterprise Authorization: Integrate Linux Systems into a primary Windows environment (workstations & ... Directory with PKI certificates and Single Sign On. + Enterprise Provisioning: Configure new Linux and Windows systems for customer use and ensuring that… more
    General Dynamics Information Technology (09/16/25)
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  • Senior Cloud Systems Administrator

    BAE Systems (Sterling, VA)
    **Job Description** We are looking for a highly skilled Senior Cloud Systems Administrator to join our visible technical program driving the Model Based ... structures suitable for AI applications. This program delivers engineering services for Linux and Windows cloud-based infrastructure as well as sophisticated… more
    BAE Systems (09/09/25)
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  • Senior Systems Administrator

    Leidos (Vienna, VA)
    …+ Provide support in information security system requirements and design applicable to Linux hosts + Manage Linux systems using Puppet or other config ... The National Security Sector at Leidos is seeking a ** Senior System Administrator** to join a dynamic...and Access management + Experience in Database Administration and system monitoring, including Linux command-based troubleshooting +… more
    Leidos (07/29/25)
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  • Senior Systems Administrator…

    General Dynamics Information Technology (Reston, VA)
    …Family:** IT Infrastructure and Operations **Skills:** Information Technology (IT) Systems ,Microsoft Windows Server, System Administration **Certifications:** ... + years of related experience **US Citizenship Required:** Yes **Job Description:** ** Senior Systems Administrator** Transform technology into opportunity as a … more
    General Dynamics Information Technology (10/01/25)
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  • Systems Administrator ( Senior )

    BAE Systems (Sterling, VA)
    …of client computing software, hardware, and management solutions + Operating systems installation, configuration, and maintenance on Windows servers and ... Tomcat). + SCCM + Familiarity with configuration management tools + Automated system installation technologies + Automated backup systems + Virtual machine… more
    BAE Systems (09/10/25)
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  • System Engineer (TS/SCI)- Senior

    Vexterra Group (Bethesda, MD)
    …+ Experience with hardening Windows environments + Significant experience with system administration of server operating systems such as Microsoft Server ... Job Description: Vexterra is looking to fill a Windows Systems Engineer and Administrator position...and the cloud ecosystem. + Experience operating and maintaining systems in a Linux environment + Certification… more
    Vexterra Group (07/15/25)
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  • Senior System Integrator Engineer…

    Vexterra Group (Bethesda, MD)
    Vexterra Group is currently searching for a Senior Systems Integrator Engineer to provide the following systems support in Reston VA or Bethesda, MD office: ... * Perform Linux builds, installs, configuration, administration, and troubleshooting of both Linux and Windows platforms to include but not limited to base… more
    Vexterra Group (07/15/25)
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  • Senior Specialist Systems

    L3Harris (Springfield, VA)
    …display systems in an operations environment. + Maintain operational Windows / Linux combined Active Directory environments with full security software suite, ... Job Title: Senior Specialist, Systems Engineering - Information Technology Senior Systems Administrator (Active TS/SCI w/ CI Poly Required) Job Code:… more
    L3Harris (09/04/25)
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  • Senior System Administrator…

    St. George Tanaq Corporation (Suitland, MD)
    …distributed sites. 3. Enterprise Systems Administration - Expert in managing Windows Server and Linux environments, Active Directory, Group Policy, DNS, ... Senior System Administrator - Network Operation...Work both independently as well as in coordination with Systems administrators to maintain the smooth operation of a… more
    St. George Tanaq Corporation (08/15/25)
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  • Senior Systems Administrator II…

    V2X (Springfield, VA)
    …challenges with integrity, respect, responsibility, and professionalism. We are hiring a Senior Systems Administrator II Generalist - active TS/SCI clearance to ... the ability to obtain and maintain a Counterintelligence (CI) Polygraph. The Senior Systems Administrator II supports the information technology (IT) Operations… more
    V2X (08/07/25)
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  • Senior Systems Engineer - TS/SCI…

    General Dynamics Information Technology (Washington, DC)
    …new software releases. + Manage and administer physical and **virtual servers** , primarily ** Windows and Linux servers ** + Support and management of server ... system and security patches for host and distributed systems and implements incident response procedures during incidents of...one or more of the following supported platforms: Microsoft Windows Server, Red Hat Enterprise Linux servers,… more
    General Dynamics Information Technology (09/10/25)
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  • Senior DevSecOps Engineer

    BAE Systems (Sterling, VA)
    …structures suitable for AI applications. This program delivers engineering services for Linux and Windows cloud-based infrastructure as well as sophisticated ... **Job Description** We are looking for a Senior DevSecOps Engineer to join our visible technical...for applications + Work across infrastructure that contains both Linux and Windows + Communicate effectively with… more
    BAE Systems (09/09/25)
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  • Senior ServiceNow Developer

    BAE Systems (Sterling, VA)
    …structures suitable for AI applications. This program delivers engineering services for Linux and Windows cloud-based infrastructure as well as sophisticated ... **Job Description** We are looking for a Senior level ServiceNow Developer to join our visible...testing plans + Work across infrastructure that contains both Linux and Windows + Communicate effectively with… more
    BAE Systems (09/09/25)
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  • FLEX Senior Systems Engineer - SRE

    Marriott (Bethesda, MD)
    …**Schedule** Full Time **Located Remotely?** N **Position Type** Management The Senior Systems Engineer - Site Reliability Engineering (SRE) is ... management and automation tools such as Ansible. + Strong hands-on experience with ** Linux ** (RHEL, Ubuntu, CentOS) and ** Windows ** **administration** . + Solid… more
    Marriott (09/23/25)
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  • Senior Systems Engineer

    ManTech (Chantilly, VA)
    …and experience with Virtual Infrastructure technologies. + Experience in all components of Windows and Linux system infrastructure. + Experience in Local ... **MANTECH** seeks a motivated, career and customer-oriented ** Senior Systems Engineer** to join our...clustering and backup technologies. + Experience and proficiency with systems engineering concepts, principles and theories and system more
    ManTech (09/30/25)
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  • Senior Software Engineer - Training…

    RTX Corporation (Sterling, VA)
    …are eligible for a security clearance​ **Security Clearance:** Secret - Current ** Senior Software Engineer** **- Training System Software (Onsite)** We are ... training all the way up to high fidelity weapon system and full-flight training systems including full...Excellent written and oral communication skills + Familiarity with Linux and Windows development environments + Candidate… more
    RTX Corporation (09/16/25)
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