• Lead, Systems Engineering - Modeling…

    L3Harris (Herndon, VA)
    …interest of national security. Job Title: Lead, Systems Engineering - Modeling & Simulation Job Code: 30436 Job Location: Herndon, VA Job Schedule: 9/80 Job ... L3Harris Technologies has an opening for a Manager, Systems Engineering in Modeling, Simulation & Analysis (MS&A) to join our Mission Analysis Group (MAG). This… more
    L3Harris (12/05/25)
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  • Principal/Sr. Principal Simulation Software…

    Northrop Grumman (Sterling, VA)
    …history, they're making history. We have an opening for a Principal/Sr. Principal Simulation Software Engineer to join our team of qualified, diverse individuals in ... the Tactical Space Systems organization developing space vehicle hardware-in-the-loop simulation platforms for large and small space programs. These high-fidelity… more
    Northrop Grumman (01/08/26)
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  • Principal / Sr. Principal Software…

    Northrop Grumman (Dulles, VA)
    …+ Model Thermosphere and Exosphere environments. + Performs trade studies via computer simulation and recommend alternative architectures + Prepare design ... team of qualified, diverse individuals in the Space Systems organization developing space simulation software for NSS space programs. The individual we seek will be… more
    Northrop Grumman (01/14/26)
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  • Network Modeling and Simulation Lead

    CACI International (Sterling, VA)
    Network Modeling and Simulation Lead Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee ... * **The Opportunity** : We are seeking an experienced Network Modeling and Simulation Lead to drive our network planning and optimization efforts. The successful… more
    CACI International (10/25/25)
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  • Network Modeling and Simulation Technician

    CACI International (Sterling, VA)
    Network Modeling and Simulation Technician Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph ... * * **The Opportunity** : We are seeking an experienced Network Modeling and Simulation Engineer to join our team. The successful candidate will be responsible for… more
    CACI International (10/23/25)
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  • Associate Modeling and Simulation Engineer

    The MITRE Corporation (Mclean, VA)
    …to influence what we do. The R&D centers we operate for the government create lasting impact in fields as diverse as cybersecurity, healthcare, aviation, defense, ... with us. Our team builds extensible, scalable, real-time distributed simulation capabilities used primarily for developing and accessing transportation concepts.… more
    The MITRE Corporation (12/13/25)
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  • Program Security Subject Matter Expert (Modeling…

    KBR (Reston, VA)
    Title: Program Security Subject Matter Expert (Modeling & Simulation ) Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end ... Subject Matter Expert to support a multi-disciplinary team that provides modeling, simulation , and analysis (MS&A) support to the Defense Advanced Research Projects… more
    KBR (11/26/25)
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  • Senior Mechanical Engineer - Flight…

    RTX Corporation (Sterling, VA)
    …Citizen, US Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is required prior to start date.​ US ... Clearance:** DoD Clearance: Secret **Senior Mechanical Engineer** **- Flight Simulation (Onsite)** **Description:** Senior level professional focused on the… more
    RTX Corporation (11/06/25)
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  • Quantum Computer Scientist

    Leidos (Arlington, VA)
    **Description** The Leidos Quantum Incubator has an opening for a **Quantum Computer Scientist** with a background in quantum information science. In this position, ... the Quantum Computer Scientist will research quantum network behavior, algorithms for...quantum device protocols + Design software to create high-fidelity simulation of quantum communications, photonics, or sensing experiments. +… more
    Leidos (11/22/25)
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  • Transportation Engineer

    Leidos (Mclean, VA)
    …Overview:** We are seeking a motivated **Transportation Engineer** with experience in simulation and traffic operations to join our McLean, Virginia group. The ... not limited to:** * Develop, calibrate, and validate microscopic and mesoscopic traffic simulation models. * Apply simulation tools to assess the safety,… more
    Leidos (01/04/26)
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