• Junior Information Systems Security

    Leidos (Columbia, MD)
    **Description** **Leidos** has a new and exciting opportunity for a **Junior Information Systems Security Officer (ISSO)** in our **National Security ... Business Area (CABA)** . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and … more
    Leidos (12/04/25)
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  • Senior Principal Systems Engineer…

    RTX Corporation (Mckinney, TX)
    …US Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US citizenship ... required, as only US citizens are eligible for a security clearance ​ ** Security Clearance...Test Plans, Instruction manuals, etc.) + Experience with System Modeling Language (SysML) and Model-Based Systems Engineering… more
    RTX Corporation (11/04/25)
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  • Lead, Systems Engineering

    L3Harris (Clifton, NJ)
    …by law. Please be aware many of our positions require the ability to obtain a security clearance . Security clearances may only be granted to US citizens. In ... sea and cyber domains in the interest of national security . Job Title: Lead, Systems Engineering Job...systems based on analysis and testing results. System Modeling and Simulation Lead Functions: + Develop, maintain, and… more
    L3Harris (10/22/25)
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  • Systems Engineer

    BOOZ, ALLEN & HAMILTON, INC. (Reston, VA)
    …with modeling and simulation in a defense or national security environment + Experience with computational analysis, Monte Carlo simulations, multi-physics ... modeling , model-based systems engineering (MBSE), or agent-based modeling +...Clearance : Applicants selected will be subject to a security investigation and may need to meet eligibility requirements… more
    BOOZ, ALLEN & HAMILTON, INC. (11/19/25)
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  • Engineer Senior SIGINT Mission Systems

    BAE Systems (Fairborn, OH)
    …requirements. + You will be expected to develop new tools and algorithms for mission systems modeling and data analysis. + As a team member,you will contribute ... has the ability to be filled in 2 BAE Systems SMS locations: Boulder, Colorado or Fairborn, Ohio.** **What...US Department of Education. + A current, active TS/SCI security clearance is required. + Experience with… more
    BAE Systems (12/13/25)
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  • Radar and CID Systems Engineer

    Aviation & Missile Solutions (Huntsville, AL)
    …ranging from air and missile defense technologies, command and control, radar systems , seekers, modeling & simulation, and prototype hardware development and ... Candidate must be able to apply these skills to the following areas: modeling , radar/weapons systems analysis, algorithm development, RF hardware, HWIL support,… more
    Aviation & Missile Solutions (10/08/25)
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  • Principal Systems Engineer - Guidance,…

    RTX Corporation (Tucson, AZ)
    …US Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US citizenship ... required, as only US citizens are eligible for a security clearance ​ ** Security Clearance...The Processing, Guidance and Controls (PG&C) Center within the Systems Engineering and Test Capabilities (SE&TC) Directorate consists of… more
    RTX Corporation (12/09/25)
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  • Air Combat SME (Mission Systems Modeler)

    Huntington Ingalls Industries (Nellis AFB, NV)
    …Employment Type: Full Time/Salaried/Exempt Anticipated Salary Range: $86,071.00 - $124,000.00 Security Clearance : TS/SCI Level of Experience: Senior This ... Systems Modeler) to support the development of high-fidelity modeling and simulation environment at the Joint Integrated Test...the mission and the individual. + An active TS/SCI security clearance within the last 24 months… more
    Huntington Ingalls Industries (10/24/25)
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  • SE&I National Team Systems Engineer (Lead…

    The Boeing Company (Huntsville, AL)
    modeling and performance requirements **This position requires an active US Secret Security Clearance (US Citizenship Required). (A US Security ... Required **Relocation** This position offers relocation based on candidate eligibility. ** Security Clearance ** This position requires an active US Secret… more
    The Boeing Company (12/07/25)
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  • Systems Engineer Sr

    Lockheed Martin (Cape Canaveral, FL)
    …e\) Design reviews/ control gates * Must have an active Interim Top Secret Security clearance , with the ability to obtain and maintain a Top Secret ... Model Based Engineering \(MBE\), DOORs, Enterprise Architect, Rhapsody * Systems Modeling software experience \(Cameo/MagicDraw/Rhapsody\) * Experience applying… more
    Lockheed Martin (11/05/25)
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