• Facilities Mechanical Engineer

    Leidos (Chantilly, VA)
    …, submittals, and specifications tailored to site requirements. **Basic Qualifications** + **Current Top Secret SCI security clearance and the ability to ... **Description** **Senior Mechanical Engineer ** Leidos is seeking a seasoned and innovative...design, maintenance, and configuration management of complex building mechanical systems across a secure site. This role demands deep… more
    Leidos (10/27/25)
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  • Chief Facility Engineer (P)

    EMCOR Group (Tysons Corner, VA)
    …assists both internal and external auditors and inspectors. **Security Clearance Requirement: Top Secret SCI with Polygraph** **Qualifications** + Bachelor's ... providers. **Job Summary** EMCOR Government Services is seeking a **Chief Facility Engineer (CFE)** to lead and manage our facilities and grounds operations… more
    EMCOR Group (11/01/25)
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  • AI Machine Learning Engineer

    SAIC (Chantilly, VA)
    …+ Active TS / SCI with polygraph. + Bachelors in computer science, information systems , or a related field and 9 years or more experience; Masters ... operations. This position is in **Chantilly, VA** and requires an **active TS / SCI clearance with Polygraph.** **JOB RESPONSIBILITES INCLUDE:** + Train machine… more
    SAIC (01/03/26)
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  • Ground Solutions Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Chantilly, VA)
    …investigation and may need to meet eligibility requirements for access to classified information ; TS / SCI clearance is required. Compensation At Booz ... Ground Solutions Engineer The Opportunity: Are you looking for an...cross-functional teams, drive consensus, and define technical strategy + TS / SCI clearance + Bachelor's degree… more
    BOOZ, ALLEN & HAMILTON, INC. (12/18/25)
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  • Cyber Reverse Engineer

    CACI International (Sterling, VA)
    …years of relevant work experience** **Experience in computer science and information systems ** **Experience analyzing and reverse engineering Assembly binaries ... Cyber Reverse Engineer Job Category: Engineering Time Type: Full time...Time Type: Full time Minimum Clearance Required to Start: TS / SCI Employee Type: Regular Percentage of Travel… more
    CACI International (12/24/25)
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  • Software Engineer Integration Team

    CACI International (Dulles, VA)
    …Team Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS / SCI Employee Type: Regular Percentage of Travel Required: Up to 10% ... Anticipated Posting End: 1/31/2026 The Opportunity: As an Software Engineer , you will support the integration and testing of...Git / Bitbucket, Confluence / Jira, Gitlab, etc. Active TS / SCI clearance Desired: Working in Agile and… more
    CACI International (12/17/25)
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  • Chief Cyber Security Engineer

    Virtual Service Operations (Arlington, VA)
    …Virtual Service Operations is actively seeking a talented individual with an active TS / SCI clearance to lead the architecture, design, and integration of ... Chief Cyber Security Engineer * Arlington, VA (http://maps.google.com/maps?q=Arlington+VA+USA) Description Are you...lieu of degree Requirements + Must possess an active TS / SCI security clearance + Must be within… more
    Virtual Service Operations (12/09/25)
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  • Network Operations Center (NOC) Engineer

    CACI International (Springfield, VA)
    Network Operations Center (NOC) Engineer (Tier 2) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS / SCI ... in their activities. + Clearly communicates, verbally and written **Qualifications:** + TS / SCI with Poly required + Bachelor's degree in Computer Science,… more
    CACI International (10/25/25)
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  • Senior Signal Processing Engineer

    Leidos (Arlington, VA)
    …Citizen with an active Secret clearance and the ability to obtain a TS / SCI level clearance - Bachelors with 12+ years prior relevant experience, or Masters ... systems . Duties may include **designing, developing, and analyzing systems for the extraction of information from...an active clearance and the ability to obtain a TS / SCI clearance. Must be able to work… more
    Leidos (10/17/25)
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  • HVAC Mechanic Specialist

    Amentum (Mclean, VA)
    …and packaged unit style systems . **Must be able to obtain and maintain a Top Secret / SCI US Government security. Note: US citizenship is required to ... obtain a Top Secret / SCI security clearance.** **Essential...or equivalent required. + Must possess Class I stationery engineer License, DC 3rd steam boiler engineer more
    Amentum (01/01/26)
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