• Information System Security Officer (ISSO)

    St. George Tanaq Corporation (Richmond, VA)
    …+ Support the system lifecycle (RMF Steps 1-6), including: System categorization; Security control selection and implementation; Security assessment ... Information System Security Officer (ISSO) WFH Flexible*Remote from MD,...ensuring the secure configuration, operation, and compliance of information systems (IS) within federal government environments. The ISSO plays… more
    St. George Tanaq Corporation (11/01/25)
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  • Software Engineer II - Training System

    RTX Corporation (Sterling, VA)
    …in complexity from desktop training all the way up to high fidelity weapon system and full-flight training systems including full visual motion and simulator ... Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US citizenship is required, as only US citizens… more
    RTX Corporation (12/09/25)
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  • Principal Software Engineer - Training…

    RTX Corporation (Sterling, VA)
    …in complexity from desktop training all the way up to high fidelity weapon system and full-flight training systems including full visual motion and simulator ... Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US citizenship is required, as only US citizens… more
    RTX Corporation (11/19/25)
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  • Senior Software Engineer - Training System

    RTX Corporation (Sterling, VA)
    …in complexity from desktop training all the way up to high fidelity weapon system and full-flight training systems including full visual motion and simulator ... Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US citizenship is required, as only US citizens… more
    RTX Corporation (12/16/25)
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  • Senior Information System Security Officer

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior Information System Security Officer (ISSO)** to join our team in **Chantilly, VA** . ... the IS lifecycle + Provide liaison support between the system owner and other IS security personnel + Ensure...maintain security Authorized to Operate (ATO); Upload all security control evidence to the Governance, Risk, and Compliance (GRC)… more
    ManTech (01/06/26)
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  • Systems Integration Engineer 4

    M. C. Dean (Vienna, VA)
    control , energy management control , and transit control systems . + Create, review, and/or approve system engineering documentation to ensure that ... + Analyze user requirements and concept of operations documents to develop system requirements specifications. + Support and proactively control and manage… more
    M. C. Dean (11/26/25)
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  • Treatment System Operator/Environmental…

    AECOM (Richmond, VA)
    …+ Performing various operations and maintenance activities associated with remediation systems involving extraction of organics, performing recovery system ... Description** **AECOM** is currently seeking an experienced Environmental Technician/Treatment System Operator for employment in Richmond, VA. In this full-time… more
    AECOM (10/23/25)
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  • Specialist, Systems Integration Engineering

    L3Harris (Ashburn, VA)
    …clearance. Preferred Additional Skills: + Experience in unmanned aircraft or guided weapon systems . + System level experience in which the applicant has been ... and cyber domains in the interest of national security. Job Title: Specialist, Systems Integration Engineer Job Code: 31863 Job Location: Ashburn, VA Job Schedule:… more
    L3Harris (12/06/25)
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  • Senior Systems Engineer (MBSE) (Onsite)

    RTX Corporation (Dulles, VA)
    …traceability of requirements to technical solutions. This role involves developing and maintaining system models using tools such as Cameo Systems Modeler, as ... Cameo Systems /Architecture Modeler to create, analyze, and maintain detailed system models, utilizing SysML, UML, and other relevant modeling languages to… more
    RTX Corporation (10/13/25)
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  • Lead, Systems Engineering (Unmanned…

    L3Harris (Ashburn, VA)
    …+ Responsible for requirements definition, flow-down, and traceability for complex electronic systems . + Responsible for system design synthesis of complex ... and cyber domains in the interest of national security. Job Title: Lead, Systems Engineering (Unmanned Vehicles) Job Code: 30683 Job Location: Ashburn, VA Job… more
    L3Harris (11/05/25)
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