• Nuclear Engineer - Senior

    SOS International LLC (Reston, VA)
    Reston, VA, USA Full-time FLSA Status: Exempt Clearance Requirement: Top Secret /SCI **Company Description** Founded in 1989, SOSi is among the largest private, ... tailored solutions, tested leadership, and trusted results to enable national security missions worldwide. **Job Description** Overview SOSi is seeking a Senior… more
    SOS International LLC (11/21/25)
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  • Distinguished Software Engineering Lead

    Frontier Technology Inc. (Chesapeake, VA)
    …and product leadership to align delivery with mission lifecycle requirements. + Security & Resilience + Engineer architectures for redundancy and resilience ... in one or more core languages (Python, Java, C++, TypeScript). + Active Secret clearance required; TS /SCI strongly preferred. Desired: + Experience developing… more
    Frontier Technology Inc. (12/19/25)
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  • Research Science / Senior AI Machine Learning…

    CACI International (Sterling, VA)
    …mathematical underpinnings and at least 4 years' experience.** **Must have active Top Secret security clearance.** **Experience developing models,.** ... Research Science / Senior AI Machine Learning Research Engineer Job Category: Engineering Time Type: Full time...Time Type: Full time Minimum Clearance Required to Start: Top Secret Employee Type: Regular Percentage of… more
    CACI International (11/25/25)
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  • Data Engineer

    CGI Technologies and Solutions, Inc. (Arlington, VA)
    …for a Data Engineer within our Intel sector advancing the national security mission through cutting edge technology. You must have a passion for keeping pace ... **Data Engineer ** **Category:** Business Consulting, Strategy and Digital Transformation...Experience: Bachelor's degree and/or 10+ years of experience * Security Clearance: TS /SCI required with the ability… more
    CGI Technologies and Solutions, Inc. (01/07/26)
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  • Systems Engineer , Senior

    CGI Technologies and Solutions, Inc. (Arlington, VA)
    …**Position ID:** J0925-0627 **Employment Type:** Full Time **Position Description:** *Government Security Clearance Required: TS /SCI required with the ability to ... Engineer within our Intel sector advancing the national security mission through cutting edge technology. You must have...Experience: Bachelor's degree and/or 5-10 years of experience * Security Clearance: TS /SCI with ability to obtain… more
    CGI Technologies and Solutions, Inc. (12/30/25)
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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 for a Senior AI and Machine Learning Research Engineer . Apply machine learning, statistics, to develop algorithms to...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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  • Data Center Controls Engineer

    Amazon (Alexandria, VA)
    …the candidate selected be a US citizen and currently possess and maintain an active Top Secret security clearance with SCI eligibility. The position further ... that, after start, the selected candidate obtain and maintain an active TS /SCI security clearance with polygraph and satisfy other security related… more
    Amazon (01/08/26)
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  • Software Engineer Sr

    Lockheed Martin (Herndon, VA)
    …drive continuous improvement and stakeholder alignment\. US Citizenship required for this role\. Top Secret Clearance required to start the position with the ... Space is a critical domain, connecting our technologies, our security and our humanity\. While others view space as...ability to obtain and maintain a TS /SCI **Desired Skills:** \-Excellent communication and stakeholder‑management abilities, able… more
    Lockheed Martin (12/11/25)
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  • Network Engineer

    System One (Mclean, VA)
    …Engineer Location: Arlington, VA Type: Contract To Hire Contractor Work Model: Onsite Security Clearance: Active Top Secret Duties and Responsibilities: + ... compliance frameworks.(preferred) Clearance Requirements: Successful completion of a government security screening and/or a Top Secret...of a government security screening and/or a Top Secret Clearance + Clearance: Top… more
    System One (12/26/25)
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  • Engineer Systems Architect - MAJESTIC

    Huntington Ingalls Industries (Springfield, VA)
    …10% Employment Type: Full Time/Hourly/Non-Exempt Anticipated Salary Range: $110,615.00 - $160,000.00 Security Clearance: Top Secret Level of Experience: ... and the sensitivity of the operational environment, an active TS /SCI security clearance will be required. Essential...and business administration professionals. Recognized as one of America's top large company employers, we are a values and… more
    Huntington Ingalls Industries (12/19/25)
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