• Linux/Windows Systems Administrator

    COMSO, Inc (Columbia, MD)
    Linux/Windows Systems Administrator II ( TS / SCI w/ Polygraph) Columbia, MD (http://maps.google.com/maps?q=Columbia+MD+USA+21046) Job Type Full-time ... seeking aSystems Administrator IIto join our Team! ** Must have active TS / SCI w/ Polygraph before consideration ** Requirements: + Ten (10) years' experience… more
    COMSO, Inc (11/27/25)
    - Save Job - Related Jobs - Block Source
  • Systems Administrator - TS

    General Dynamics Information Technology (Chantilly, VA)
    …ID:** RQ206369 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None ... Yes **Job Description:** Transform technology into opportunity as a Systems Administrator with GDIT. A career in...experience with web services. + **Security Clearance Level** : Top Secret / SCI with Polygraph +… more
    General Dynamics Information Technology (12/16/25)
    - Save Job - Related Jobs - Block Source
  • Systems Administrator

    Leidos (Columbia, MD)
    **Description** **Leidos** has a new and exciting opportunity for a ** Systems Administrator ** in our **National Security Sector's (NSS) Cyber & Analytics ... us and make a difference in National Security!** The Systems Administrator will be responsible for: +...improve reliability and performance **Minimum requirements include:** + Active TS / SCI with Polygraph + Ten (10)+ years… more
    Leidos (10/12/25)
    - Save Job - Related Jobs - Block Source
  • Senior Systems Administrator

    The Boeing Company (Herndon, VA)
    …based on candidate eligibility. **Security Clearance** This position requires an active US Top Secret / SCI Security Clearance (US Citizenship Required). (A US ... (IDT&S) organization Specialized Infrastructure Operations group is currently seeking a **Senior Systems Administrator ** to join the team in **Herndon, VA** .… more
    The Boeing Company (12/25/25)
    - Save Job - Related Jobs - Block Source
  • Junior Systems Administrator

    Amentum (Mclean, VA)
    …maintenance and support of computer systems and networks. **Must have an Active Top Secret / SCI US Government clearance. Note: US Citizenship is required ... **Amentum** is looking for a **Junior Systems Administrator ** to join our team...to maintain a Top Secret / SCI clearance.** **Responsibilities:** +… more
    Amentum (01/01/26)
    - Save Job - Related Jobs - Block Source
  • Systems Administrator - COMSEC

    KBR (Chantilly, VA)
    …travel. + Working Hours: Standard 40 hours per week. Qualifications: Required: + Clearance: Top Secret SCI with Polygraph. + Experience: 3+ years' experience ... Title: Systems Administrator - COMSEC Belong. Connect....in STEM degree + Certifications: IAW NRO Directive 50-05, information Assurance Workforce Enhancement Program (IAWEp) category information more
    KBR (12/06/25)
    - Save Job - Related Jobs - Block Source
  • Lead Windows Systems Administrator

    General Dynamics Information Technology (Chantilly, VA)
    …ID:** PRX25822 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None ... of related experience **US Citizenship Required:** Yes **Job Description:** Lead Windows Systems Administrator (SME) We are seeking an accomplished Lead Windows… more
    General Dynamics Information Technology (12/29/25)
    - Save Job - Related Jobs - Block Source
  • SAP NS2 Senior Cloud Engineer/ Systems

    SAP (Herndon, VA)
    …benefit options for you to choose from. **SAP NS2 Senior Cloud Engineer/ Systems Administrator - Onsite - Chantilly, VA** **Active TS SCI with Polygraph ... Information Security, Engineering, Information Technology. MA/MS Preferred. + Top Secret Clearance with Polygraph Note: The job description is meant… more
    SAP (10/21/25)
    - Save Job - Related Jobs - Block Source
  • Lead Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, mission-oriented **Senior Systems Administrator ** to join our team in **Chantilly, VA.** As the Lead Senior Systems ... or high school diploma/GED and 13 years of relevant systems administration experience with 3 + years in a...**Clearance Requirements:** + Must possess a current / active TS / SCI with Polygraph **Physical Requirements:** + Must… more
    ManTech (12/19/25)
    - Save Job - Related Jobs - Block Source
  • Systems Administrator - TS

    Leidos (Chantilly, VA)
    **Description** Leidos is seeking an experienced ** Systems Administrator ** to join our team in supporting mission-critical IT infrastructure. This role is ideal ... for a professional with solid systems administration expertise, particularly in pipeline automation and/or VMware...of a degree. + US Citizen with an active TS / SCI with Poly security clearance. + Proven… more
    Leidos (01/01/26)
    - Save Job - Related Jobs - Block Source
  • Systems Administrator III

    Noblis (Chantilly, VA)
    …+ Active Top Secret ( TS ) clearance with eligibility for Sensitive Compartmented Information ( SCI ) and ability to obtain a Counterintelligence ... Responsibilities As a Systems Administrator , you will be responsible...web servers. You will support the multi-enclave environment (Unclassified, Secret , and Top Secret / SCI more
    Noblis (12/30/25)
    - Save Job - Related Jobs - Block Source
  • Senior IT Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior IT Systems Administrator ** to join our team in **Chantilly, VA.** **Responsibilities include ... manuals or similar documentation. **Clearance Requirements:** + Must have a current/active TS / SCI w/Polygraph. **Physical Requirements:** + Must be able to… more
    ManTech (12/03/25)
    - Save Job - Related Jobs - Block Source
  • Senior Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated and skilled **Senior Systems Administrator ** to join our sustainment team in **Chantilly, VA.** In this role, you will support a ... limited to:** + Provide hands-on O&M support for enterprise systems , including break-fix resolution and routine sustainment tasks +... and group policy configuration **Clearance Requirements:** + Active TS / SCI with CI Polygraph is required for… more
    ManTech (12/13/25)
    - Save Job - Related Jobs - Block Source
  • IT Systems Administrator

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **IT Systems Administrator ** to join our team in **Chantilly, VA.** **Responsibilities include but ... user-friendly technical documentation. **Clearance Requirements:** + Must have a current/active TS / SCI w/Polygraph. **Physical Requirements:** + Must be able to… more
    ManTech (11/19/25)
    - Save Job - Related Jobs - Block Source
  • Senior Systems Administrator

    Leidos (Chantilly, VA)
    …service that provides attribute data via an LDAP interface to hundreds of various Sponsor systems Required Qualifications + Active TS / SCI with Polygraph + BS ... **Description** Leidos is seeking a System Administrator for a technical development program supporting the...+ Must be an expert in using Linux-based operating systems + Must have strong Bash skills + Must… more
    Leidos (10/10/25)
    - Save Job - Related Jobs - Block Source
  • Linux System Administrator -Senior Level

    Nightwing (Sterling, VA)
    …have a broad range of experience supporting mission critical networks and computer systems . CLEARANCE REQUIREMENT: TS / SCI with POLY Responsibilities + Assist ... defense, civil, and commercial markets. Nightwing is seeking a highly motivated Systems Administrator to join a mature program in the Sterling VA location. The… more
    Nightwing (12/20/25)
    - Save Job - Related Jobs - Block Source
  • Fidelis Administrator - Active TS

    ENS Solutions (Reston, VA)
    …Fidelis appliance stack and network issues to ensure it remains fully operational + Active TS / SCI clearance; willingness to take a polygraph exam + HS diploma or ... deployments and configuration management. + Experience as a network administrator or systems engineer. + Experience in using Active Directory to manage… more
    ENS Solutions (12/27/25)
    - Save Job - Related Jobs - Block Source
  • Physical Security System Administrator 4

    M. C. Dean (Chantilly, VA)
    …and may meet eligibility requirements, including US Citizenship, for access to classified information ; **ACTIVE TS / SCI w/ POLYGRAPH clearance is REQUIRED** ... Security System Administrator 4** to join our **Security and Electronic Systems (SES)** business Unit. As part of **(SES)** Strategic Business Unit you will… more
    M. C. Dean (10/23/25)
    - Save Job - Related Jobs - Block Source
  • Systems Engineer/Developer ( TS

    General Dynamics Information Technology (Chantilly, VA)
    …ID:** RQ212148 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None ... + Experience securing cloud environments and supporting customer accreditation for highly sensitive systems + Experience working on large projects involving… more
    General Dynamics Information Technology (01/02/26)
    - Save Job - Related Jobs - Block Source
  • Pr./System Admin - Shift Work ( Top

    Northrop Grumman (Chantilly, VA)
    RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE TYPE: Top Secret TRAVEL: No **Description** At Northrop Grumman, our employees have ... **Must have US Citizenship with a current or active Top Secret level clearance and the ability...Level 2 certification** **Preferred Qualifications:** + Red Hat Certified Systems Administrator (RHCSA) certification + Experience with… more
    Northrop Grumman (11/25/25)
    - Save Job - Related Jobs - Block Source