• Senior Linux Engineer

    CACI International (Chantilly, VA)
    Senior Linux Engineer Job...Time Type: Full time Minimum Clearance Required to Start: TS /SCI with Polygraph Employee Type: Regular Percentage of Travel ... is seeking a highly skilled and experienced Tier 3 Linux Engineer to join our team in...tools, and best practices. **Qualifications:** _Required:_ * An Active TS /SCI Clearance with Polygraph. * Security+ or DoD 8570… more
    CACI International (11/01/25)
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  • Senior Linux Engineer

    General Dynamics Information Technology (Chantilly, VA)
    …RQ211516 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job ... Family:** IT Infrastructure and Operations **Skills:** Linux Environments,Red Hat Enterprise Linux (RHEL),Systems Engineering **Experience:** 10 + years of… more
    General Dynamics Information Technology (12/14/25)
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  • OCONUS Field Engineer - TS /SCI…

    Leidos (Chantilly, VA)
    **Description** We are seeking mid to senior field engineers to join our international team in an exciting OCONUS location. The team is made-up of highly technical ... and motivated individuals. The engineer for this role will troubleshoot complex problems, as...candidates for consideration, must possess an active and in-scope TS /SCI Polygraph.** **Basic Qualifications:** + Bachelor's degree and 8+… more
    Leidos (11/07/25)
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  • Systems Engineer - Senior

    Noblis (Chantilly, VA)
    Responsibilities As a Senior Systems Engineer , you will... Top Secret environments. + **Active Top Secret ( TS ) clearance with ... May require flexible scheduling to support critical operations in Top Secret environments. \#FundedPosition Desired Qualifications + Active TS /SCI with CI… more
    Noblis (11/20/25)
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  • Linux Engineer

    Arena Technical Resources, LLC (Chantilly, VA)
    …VA, US Job ID: ATR 17717 Job Description Job Title: Linux Engineer Location: Chantilly, VA Eligibility: Top Secret /SCI clearance with current CI ... required The Systems Engineering team is seeking a driven Senior Linux /UNIX Systems Administrator that is highly...- Experience writing detailed, technical documentation -8570 Compliance -Active TS /SCI + CI Poly - Ability to respond to… more
    Arena Technical Resources, LLC (11/29/25)
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  • Information System Security Engineer

    Amentum (Warrenton, VA)
    …program is to support, operate, and maintain the Distributed Continuity Integrated Network - Top Secret Enterprise Services (DCIN- TS ES) which is a ... If so, look no further. Amentum is seeking a Senior Information System Security Engineer (ISSE) to...at multiple classifications levels. **Requirements:** * Must have active Top - Secret clearance with SCI or TS more
    Amentum (12/05/25)
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  • Senior DevOps Engineer

    Noblis (Chantilly, VA)
    Responsibilities As a Senior DevOps Engineer , you will be...of experience in DevOps or related field + **Active Top Secret ( TS ) clearance with ... infrastructure as a service provider + Configure and manage Linux -based servers to serve dynamic websites + Debug cluster-based...Train (ART) activities + Support the multi-enclave environment (Unclassified, Secret , and Top Secret ) +… more
    Noblis (11/20/25)
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  • Research Science / Senior AI Machine…

    CACI International (Sterling, VA)
    … Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: Top Secret Employee Type: Regular Percentage of Travel Required: Up to 10% ... 1/1/2100 **CACI has an exciting new opportunity for a Senior AI and Machine Learning Research Engineer ....and at least 4 years' experience.** **Must have active Top Secret security clearance.** **Experience developing models,.**… more
    CACI International (11/25/25)
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  • Data Scientist / Senior AI Machine Learning…

    CACI International (Sterling, VA)
    … Job Category: Science Time Type: Full time Minimum Clearance Required to Start: Top Secret Employee Type: Regular Percentage of Travel Required: Up to 10% ... Opportunity:** CACI has an exciting new opportunity for a Senior AI and Machine Learning Research Engineer ....as dictated by the contract + Must have active Top Secret Clearance. _Desired:_ + Ph.D. in… more
    CACI International (11/25/25)
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  • Senior DevOps Engineer

    CACI International (Chantilly, VA)
    …Aerospace Engineering, Computer Engineering, Physics, Math, or equivalent experience + Active TOP SECRET security clearance with SCI eligbility + Willing to ... Senior DevOps Engineer Job Category: Engineering...Time Type: Full time Minimum Clearance Required to Start: TS /SCI Employee Type: Regular Percentage of Travel Required: Up… more
    CACI International (11/07/25)
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  • Senior Infrastructure / DevOps…

    CACI International (Chantilly, VA)
    Senior Infrastructure / DevOps Engineer Job...Time Type: Full time Minimum Clearance Required to Start: Top Secret Employee Type: Regular Percentage of ... * * * **The Opportunity:** CACI is currently looking for an experienced Senior Infrastructure (Platform) Engineer to join our team developing next generation… more
    CACI International (10/25/25)
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  • Systems Engineer - Senior

    Parsons Corporation (Centreville, VA)
    …Engineering or a related field + Must be a US Citizen + Must possess and maintain Top Secret SCI clearance with CI poly + Must have proficient Linux command ... Our Special Programs and Systems team is hiring a Senior Systems Engineer with a passion for...quality assurance (QA) experience **Security Clearance Requirement:** An active Top Secret SCI w/Polygraph security clearance is… more
    Parsons Corporation (12/06/25)
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  • Machine Learning Engineer - Senior

    SOS International LLC (Chantilly, VA)
    Chantilly, VA, USA Full-time FLSA Status: Exempt Clearance Requirement: Top Secret SCI w/ Poly **Company Description** Founded in 1989, SOSi is among the largest ... worldwide. **Job Description** **Overview** SOSi is seeking a skilled Machine Learning Engineer to support a US government customer in Chantilly, VA. In this… more
    SOS International LLC (11/21/25)
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  • Digital Signal Processing Engineer

    Parsons Corporation (Chantilly, VA)
    …challenges + An active polygraph is preferred **Security Clearance Requirement:** An active Top Secret SCI security clearance is required for this position.​ ... qualified candidates to fill a Sr. Digital Signal Processing Engineer (DSP) positions at our headquarters in Chantilly, VA....equivalent to 2 years of relevant professional experience. + TS /SCI is required + Minimum of 8 years of… more
    Parsons Corporation (10/21/25)
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  • Principal / Sr. Principal DevOps Software…

    Northrop Grumman (Chantilly, VA)
    …concepts, and techniques **Preferred Qualifications for both levels:** + Active Top Secret /SCI security clearance + Experience with Software development ... integrity and reliability + Build and maintain computer images ( Linux and Windows) + Managed software repositories + Develop...may be filled at either the **Principal DevOps Software Engineer ** or ** Senior Principal DevOps Software … more
    Northrop Grumman (12/04/25)
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  • Senior DevOps Software Engineer

    CACI International (Sterling, VA)
    Senior DevOps Software Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS /SCI with Polygraph Employee Type: ... Type of Travel: Local * * * **The Opportunity:** CACI is seeking an enthusiastic Senior DevOps Software Engineer to join our Team. We enable national security… more
    CACI International (12/11/25)
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  • Senior DevSecOps Engineer

    CACI International (Chantilly, VA)
    Senior DevSecOps Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS /SCI with Polygraph Employee Type: Regular ... advanced mission applications and analytics within an enterprise. **Responsibilities:** As a Senior DevSecOps engineer , you will + Develop features to automate,… more
    CACI International (10/15/25)
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  • Cleared AI/ML Engineer (Multiple Levels)

    Noblis (Chantilly, VA)
    …is seeking to hire an AI/ML Engineer (Multiple Levels) with an ACTIVE Top ** ** Secret with SCI and Polygraph in Chantilly, VA** As an experienced AI/ML ... Engineer with our team, you will be working with...Windows environments and managing resources for efficiency. + **ACTIVE Top Secret with SCI and Polygraph** +… more
    Noblis (10/08/25)
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  • Senior Cyber Engineer

    Nightwing (Sterling, VA)
    …customers in the intelligence community, defense, civil, and commercial markets. ** Senior Cyber Engineer ** Nightwing provides technically advanced full-spectrum ... work that is vital to our national security, apply today! **Principal Cyber Engineer ** Cyber Offense and Defense Experts (CODEX) is seeking a cyber engineer more
    Nightwing (12/12/25)
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  • Senior Cyber Security Engineer

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented ** Senior Cyber Security Engineer ** to join our team in **Chantilly, VA** . Senior Cyber Security ... management services + Maintain infrastructure in cloud or virtualized environments + Perform Linux -based system upgrades and patches + Engineer and deploy a… more
    ManTech (12/11/25)
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