• Senior Software Engineer (C#/React)

    CoStar Realty Information, Inc. (Richmond, VA)
    Senior Software Engineer (C#/React) Job Description CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate ... of thousands of users. **Basic Qualifications** + 5+ years of software development experience + Demonstrated experience in architecting, designing and building large… more
    CoStar Realty Information, Inc. (09/12/25)
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  • Senior Plumbing Engineer

    Jacobs (Virginia Beach, VA)
    …will include: * Development of the design criteria for the Plumbing systems . * Layout and design of Plumbing systems including sanitary sewer, process ... for every market and every location. We're looking for a high-energy, Plumbing Engineer to join our Building Mechanical team and help deliver innovative Plumbing… more
    Jacobs (11/12/25)
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  • Senior System Engineer (C)

    SimIS Inc. (Dahlgren, VA)
    …system experience in one or more of the following disciplines: combat systems design/engineering, combat system computer program development , combat system ... win as a team). SimIS Inc seeks a System Engineer III to provide combat system simulation support to...of an overall effort to provide high fidelity simulation systems and enable engineers to verify Combat Systems… more
    SimIS Inc. (11/06/25)
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  • Digital Signal Processing Engineer…

    Parsons Corporation (Chantilly, VA)
    …Company, is seeking qualified candidates to fill a Sr. Digital Signal Processing Engineer (DSP) positions at our headquarters in Chantilly, VA. We are currently ... Processing Engineers that will design, develop and maintain complex systems . We meet customer and mission needs by leveraging...at a time, assisting with multiple parts of the development process, including design, development , testing and… more
    Parsons Corporation (10/21/25)
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  • OPIR Systems Engineer

    KBR (Chantilly, VA)
    …resulting collected data into useful information distributed to IC and DoD users. As a Senior OPIR Systems Engineer , you will be responsible for providing ... Title: OPIR Systems Engineer Belong. Connect. Grow. with...awareness of and technical familiarity with new programs in development planned for delivery to the site to include… more
    KBR (09/30/25)
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  • Senior Software Engineer

    Leidos (Newport News, VA)
    …first. + Mentor other engineers in the art of building complex, web scale systems . + Resolve roadblocks for the development team, working collaboratively with ... Leidos' National Security Sector has current job opportunities for talented ** Senior Software Engineers** . The successful candidate will work collaboratively with… more
    Leidos (11/22/25)
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  • R & D Architect Support Engineer…

    KBR (Chantilly, VA)
    Title: R & D Architect Support Engineer / Systems Engineer Belong. Connect. Grow. with KBR! KBR is seeking aR&D Architect Support Engineer / Systems ... software development and verification strategies and integration of new systems and initiatives in support of expanded mission capabilities + Analyze: Experience… more
    KBR (09/30/25)
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  • Senior Software Engineer (S)

    SimIS Inc. (Dahlgren, VA)
    …Description: SimIS, Inc. seeks Senior Software Engineers to lead software development for simulation systems , mentor junior developers, and oversee complex ... This position involves developing and maintaining software for training simulation systems including scenario development tools and system interfaces. The… more
    SimIS Inc. (09/22/25)
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  • Senior Mechanical Engineer

    Leidos (Reston, VA)
    …The Mission Solutions Business Area at Leidos is looking for a Mechanical Engineer to join our Reston, VA based team. The successful candidate will work ... multi-disciplined government contractor team with a focus on research and development of characterization methodologies of aboveground and underground structures and… more
    Leidos (09/26/25)
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  • Machine Learning Engineer - Senior

    SOS International LLC (Chantilly, VA)
    …+ Experience developing and deploying AI/ML models as part of production systems , implementing software development best practices for scalability and ... Description** **Overview** SOSi is seeking a skilled Machine Learning Engineer to support a US government customer in Chantilly,...+ Minimum 5 years of experience in a data science/ engineer role. + Experience developing and using agentic AI… more
    SOS International LLC (11/21/25)
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