• Modeling & Simulation

    KBR (Reston, VA)
    Title: Modeling & Simulation Engineer ( Senior I) Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering ... shape the future of space defense. KBR is seeking a Modeling & Simulation Engineer ( Senior I) with AFSIM experience to join a team of quantitative… more
    KBR (10/24/25)
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  • Mission Modeling and Simulation

    SAIC (Alexandria, VA)
    **Description** SAIC is seeking motivated and detail-oriented ** Senior Modeling and Simulation Analysts - Senior Engineers** to join our dynamic team. ... and engineers to support the development and implementation of modeling and simulation (M&S) solutions for a...and execution of M&S projects under the guidance of senior analysts. This includes creating models, running simulations, and… more
    SAIC (11/20/25)
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  • Mission Modeling and Simulation

    SAIC (Alexandria, VA)
    **Description** SAIC is seeking motivated and detail-oriented **Mission Modeling and Simulation Analysts - Engineers** to join our dynamic team. The successful ... candidates will work closely with senior analysts and engineers to support the development and...and engineers to support the development and implementation of modeling and simulation (M&S) solutions for a… more
    SAIC (11/20/25)
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  • Modeling and Simulation

    BOOZ, ALLEN & HAMILTON, INC. (Alexandria, VA)
    Modeling and Simulation Engineer The Opportunity: Are you looking for an opportunity to combine your technical skills with big picture thinking to make an ... on national security? As a Modeling and Simulation ( M & S ) Engineer ,...to answer strategic questions, developing and briefing materials for senior management, and applying analytical and computational met hods,… more
    BOOZ, ALLEN & HAMILTON, INC. (11/20/25)
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  • Modeling And Simulation

    KBR (Chantilly, VA)
    Title: Modeling And Simulation Engineer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced ... the future of space defense. KBR is seeking a Modeling And Simulation Engineer with...systems. We lead architectural assessments and report recommendations to senior US Government personnel guiding acquisition and execution of… more
    KBR (11/07/25)
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  • Systems Engineer , Senior

    BOOZ, ALLEN & HAMILTON, INC. (Reston, VA)
    Systems Engineer , Senior The Opportunity: Are you looking for an opportunity to combine your technical skills with big picture thinking to make an impact in ... leadership and mentoring while broadening your skillset into areas like modeling and simulation and computational analysis. Grow your skills by merging data… more
    BOOZ, ALLEN & HAMILTON, INC. (11/17/25)
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  • Senior Level Simulations Accreditation…

    Amentum (Dahlgren, VA)
    Amentum is seeking Senior Simulations Accreditation Systems Engineer to join our team. The role requires a strong understanding of systems engineering ... principles, modeling and simulation methodologies, and relevant industry standards. You will be part of our growing systems, information technology & software… more
    Amentum (11/13/25)
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  • Nuclear Engineer , Senior

    BOOZ, ALLEN & HAMILTON, INC. (Reston, VA)
    Nuclear Engineer , Senior Key Role: Provide nuclear weapons effects subject matter expertise to client research and development (R&D) modeling and ... control technology, or hard target defeat + Experience with nuclear weapons effects modeling and simulation tools + Knowledge of systems engineering, data… more
    BOOZ, ALLEN & HAMILTON, INC. (11/21/25)
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  • Senior MBSE Systems Engineer

    CACI International (Sterling, VA)
    Senior MBSE Systems Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: Top Secret Employee Type: Regular Percentage of ... None * * * **The Opportunity:** Join CACI as a Model-Based Systems Engineer (MBSE) and contribute to a dynamic counter-unmanned aircraft systems (C-UAS) mission that… more
    CACI International (11/18/25)
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  • Senior OPIR Systems Engineer

    KBR (Chantilly, VA)
    Title: Senior OPIR Systems Engineer KBR is seeking a highly qualified OPIR Systems Engineer to provide Systems Engineer Technical Advisor (SETA) support ... for a USG Agency. As a Senior OPIR Systems Engineer , you will be...and assess total constellation performance + Supports and conducts modeling and simulation of Tracking OPIR sensor… more
    KBR (09/12/25)
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  • Senior System Engineer (C)

    SimIS Inc. (Dahlgren, VA)
    …and importance of others (work and win as a team). SimIS Inc seeks a System Engineer III to provide combat system simulation support to the Warfare Analysis and ... logistics support in support of an overall effort to provide high fidelity simulation systems and enable engineers to verify Combat Systems' performance in desktop… more
    SimIS Inc. (11/06/25)
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  • Senior SIGINT Systems Engineer

    KBR (Chantilly, VA)
    Title: Senior SIGINT Systems Engineer Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end engineering and advanced ... the future of space defense. KBR is seeking a Senior SIGINT Systems Engineer to be part...Government in defining new mission requirements, performing oversight of modeling and simulation , architectural definition clarifying the… more
    KBR (09/16/25)
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  • Senior Engineer

    Nou Systems, Inc. (Fort Belvoir, VA)
    …defense systems and improve capabilities. We are pleased to announce an opening for a senior engineer who will join our Engineering Services Team in the National ... IDIQ contract. The candidate will serve as a key senior member of the RETS technical team, positioning them...and relevant Task Orders (TOs) + Provide mission engineering, modeling & simulation , developmental test & evaluation,… more
    Nou Systems, Inc. (11/20/25)
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  • Senior Project Development Engineer

    CMTA, Inc (Fairfax, VA)
    …and career opportunities. **Job Summary:** CMTA, a Legence company, is looking for a Senior Project Development Engineer in the federal market to help in our ... can easily make the transition to become an energy engineer within our Energy Solutions group. **Below are some...Systems (UMCS) and their operation + Experience with building simulation and bin spreadsheet modeling of ECMs… more
    CMTA, Inc (11/23/25)
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  • Senior Transportation/Traffic…

    Jacobs (Virginia Beach, VA)
    …play a key role in redefining how people and goods move. As a Senior Transportation/Traffic Engineer , you'll collaborate with a multidisciplinary team of roadway ... transportation planning, and operations analysis. * Proficiency in traffic modeling and simulation tools. * Strong communication...in civil engineering or a related field. * Professional Engineer (PE) license in the Commonwealth of Virginia. *… more
    Jacobs (10/24/25)
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  • Senior MBSE Systems Engineer

    SAIC (Chantilly, VA)
    …knowledge while increasing their responsibilities. SAIC has an opening for a Senior Systems Engineer to provide Systems Engineering and Technical Assistance ... mission processing + Experience with use of architecting to support senior level enterprise decision making + Proven experience/familiarity with architecture tools… more
    SAIC (11/20/25)
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  • Senior Associate Systems Engineer

    L3Harris (Springfield, VA)
    …land, sea and cyber domains in the interest of national security. Job Title: Senior Associate, Systems Engineer - Watch Officer (Active TS/SCI w/CI Poly ... up to date current operations picture. . Develop and utilize model and simulation tools to analyze satellite operations and predict system behavior under various… more
    L3Harris (10/15/25)
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  • Senior Systems Engineer

    Leidos (Reston, VA)
    …and solution architects to ensure project goals align. + Contribute to the modeling , simulation , and analysis of systems throughout their lifecycle, supporting ... Must be a US Citizen **Preferred Qualifications:** + Experience with model and simulation environments to support simulation and testing. + Experience with… more
    Leidos (11/13/25)
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  • Senior Systems Engineer - Flight…

    RTX Corporation (Sterling, VA)
    …are eligible for a security clearance​ **Security Clearance:** DoD Clearance: Secret ** Senior Systems Engineer ** **- Flight Trainer Programs (Onsite)** Collins ... interoperability. By merging real-world scenarios with virtual environments, we deliver the simulation and training tools necessary to stay ahead in a dynamic world.… more
    RTX Corporation (11/12/25)
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  • Senior Operational Test and Evaluation…

    Bluepath Labs (Sterling, VA)
    …BluePath focuses on the intersection of technology and national security. The Senior Engineer is responsible for planning, conducting, and analyzing tests ... and Evaluation), and the DHS SELC framework. + Proficiency in modeling and simulation tools, digital engineering, or data management platforms to support… more
    Bluepath Labs (10/07/25)
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