• 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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  • Linux / Websphere Admin

    ASM Research, An Accenture Federal Services Company (Washington, DC)
    …related field. **Other Job Specific Skills** + Advanced knowledge of Microsoft Operating Systems and products that include Microsoft Windows , Windows ... Responsible for unique or complex information systems and/or information technology tasks within more than...complex information technology tools. + Handles user requests for system needs and upgrades that are unique or complex… more
    ASM Research, An Accenture Federal Services Company (10/10/25)
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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 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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  • Senior Systems Administrator

    Leidos (Alexandria, VA)
    …as a Polygraph. **Primary Responsibilities:** + Lead system administration for Linux and Windows -based systems in secure, mission-critical environments. ... Decision Advantage Solutions Business Area, is currently seeking a Senior Systems Administrator. As a senior...(Red Hat Enterprise Linux or CentOS) and Windows Server platform system administration. + Proficiency… more
    Leidos (10/10/25)
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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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  • 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 IT Systems Engineer

    ManTech (Chantilly, VA)
    …+ Knowledge and experience with virtual infrastructure technologies, all components of Windows and Linux system infrastructure, Local Area Network/Wide ... **MANTECH** seeks a motivated, career and customer-oriented ** Senior IT Systems Engineer** to join...clustering, and backup technologies. + Experience and proficiency with systems engineering concepts, principles, theories, and system more
    ManTech (08/20/25)
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  • Senior Cloud Systems Engineer…

    St. George Tanaq Corporation (Suitland, MD)
    …Cloud Platform (GCP), Oracle Cloud Infrastructure (OCI) Operating Systems : Linux /Unix (Ubuntu, CentOS, Red Hat) Windows Server administration Infrastructure ... Senior Cloud Systems Engineer (Identity Management...Azure ExpressRoute, and software-defined networking (SDN) solutions. + Analyze system requirements and ensure that systems will… more
    St. George Tanaq Corporation (08/19/25)
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  • Senior Network Systems Engineer

    Noblis (Chantilly, VA)
    …Nutanix) + Network administration and security + Cloud platforms (AWS GovCloud, SC2S, C2S) + Linux and Windows operating systems + Windows Active ... Responsibilities As a Senior Systems Engineer, you will plan,...and SAFe Methodologies. + Understanding of forensic and investigative system requirements. + Demonstrated experience designing and implementing secure… more
    Noblis (09/03/25)
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  • Senior Information Systems Security…

    Tyto Athene (Washington, DC)
    …assessments tools such as Nessus, Qualys + Experience in administrating BSD/UNIX, Windows , Windows NT, LINUX , or open systems -compliant systems + ... **Description** Tyto Athene is searching fora ** Senior Information Systems Security Officer (ISSO)**...that the candidate will be responsible for are the System Security Plan, Risk Assessment Report, Security Assessment Plan… more
    Tyto Athene (10/04/25)
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  • Mid- Senior Network Engineer

    Infinity Systems Engineering (Alexandria, VA)
    …experience in Juniper switch configuration (Cisco experience is a plus) + Proficient in Linux and Windows system administration + Active CompTIA Security+ CE ... + Configure, manage, secure, and troubleshoot Juniper and Cisco switches. + Perform systems administration on Windows and Linux platforms (updates, security,… more
    Infinity Systems Engineering (10/07/25)
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