• Scorpius Systems Engineer (Multi-Level)

    Mission Support and Test Services (Mercury, NV)
    …for Subcritical Experiments (ECSE) Directorate is seeking an experienced Systems Engineer (Senior or Principal level) to support the implementation of design ... areas is required (approximately 30 miles beyond the Mercury gate). Senior Engineer : + Devises imaginative, thorough, and practical solutions requiring evaluation of… more
    Mission Support and Test Services (12/02/25)
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  • Senior Engineer Instrument & Control

    Mission Support and Test Services (North Las Vegas, NV)
    …Inc. (Jacobs), and HII Nuclear Inc. **Responsiblities** We are seeking a self-motivated Senior Engineer to serve as the Instrument & Control (I&C) Engineer who ... the Nevada National Security Site (NNSS). In this role, the I&C Senior Engineer must take a disciplined approach to evaluating existing conditions and devising… more
    Mission Support and Test Services (11/13/25)
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  • Power Engineering Engineer II

    Mission Support and Test Services (Mercury, NV)
    …(Jacobs), and HII Nuclear Inc. **Responsiblities** MSTS is seeking to hire an Engineer II for the Power Engineering department. This role will provide engineering ... and operational activities for the Nevada National Security Site (NNSS). The Engineer II reports directly to the Power Engineering Manager, within the Site… more
    Mission Support and Test Services (11/25/25)
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  • Power Engineering Senior Engineer

    Mission Support and Test Services (Mercury, NV)
    …and HII Nuclear Inc. **Responsiblities** MSTS is seeking to hire a Senior Engineer for the Power Engineering department. This role will provide engineering support ... operational activities for the Nevada National Security Site (NNSS). The Senior Power Engineer will report directly to the Power Engineering Manager, within the Site… more
    Mission Support and Test Services (11/25/25)
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  • Senior Engineer - Nuclear Assurance Safety…

    Mission Support and Test Services (Mercury, NV)
    …Group Inc. (Jacobs), and HII Nuclear Inc. **Responsiblities** The Senior Nuclear Engineer in Nuclear Assurance Directorate is responsible for the development of ... as well as performing accident analysis calculations. The Senior Engineer will be assigned a project that they are...reviews. + Conduct modeling and calculations with nuclear safety software to support the completion of DSAs and CSEs.… more
    Mission Support and Test Services (11/13/25)
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  • Senior Fire Protection Engineer

    Mission Support and Test Services (North Las Vegas, NV)
    …(Jacobs), and HII Nuclear Inc. **Responsiblities** Seeking self-motivated Fire Protection Engineer skilled in providing detailed fire alarm and detection engineering ... and review hydraulic calculations with the use of computer software , such as Hydraulic Analyzer of Sprinkler Systems. +...Council or Architectural Registration Board (NCARB); + Or Professional Engineer license + Plus at least 5 years' relevant… more
    Mission Support and Test Services (11/13/25)
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  • Electrical Engineer ( Engineer II)

    Mission Support and Test Services (Mercury, NV)
    …Inc. (Jacobs), and HII Nuclear Inc. **Responsiblities** MSTS is seeking to hire an Electrical Engineer II to serve as a facility or system engineer at one of ... and technical analysis activities using prescribed codes and standards, computer software , and generally accepted best management practices. + Perform frequent… more
    Mission Support and Test Services (12/18/25)
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  • Senior Mechanical Engineer

    Mission Support and Test Services (Mercury, NV)
    …Inc. (Jacobs), and HII Nuclear Inc. **Responsiblities** Performs duties as a facility/system engineer (Senior Mechanical Engineer ) at one of the nuclear or high ... and technical analysis activities using prescribed codes and standards, computer software , and generally accepted best management practices. This will include more… more
    Mission Support and Test Services (11/13/25)
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  • Fire Protection CSE (Senior Engineer )

    Mission Support and Test Services (Mercury, NV)
    …and HII Nuclear Inc. **Responsiblities** MSTS is seeking a Senior Fire Protection Engineer to provide leadership in resolving fire protection issues at nuclear and ... and technical analysis activities using prescribed codes and standards, computer software , and generally accepted best management practices. + Perform frequent… more
    Mission Support and Test Services (11/13/25)
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  • Senior Nuclear Engineer - NDSE

    Mission Support and Test Services (North Las Vegas, NV)
    …Security Site (NNSS) is seeking outstanding candidates for a Nuclear Engineer position supporting the Neutron Diagnosed Subcritical Experiment (NDSE) project to ... engineering degrees; or, Calculus-based STEM bachelor's degree in engineering; or Professional Engineer license; Plus at least 5 years' relevant experience. + BS… more
    Mission Support and Test Services (11/13/25)
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