Senior Engineer - Nuclear Assurance Safety Analyst
Listed on 2026-01-25
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Engineering
Systems Engineer, Safety Engineer, Environmental Engineer, Quality Engineering
Senior Engineer - Nuclear Assurance Safety Analyst
Join to apply for the Senior Engineer - Nuclear Assurance Safety Analyst role at Mission Support and Test Services, LLC
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$99,340.80/yr - $/yr
Job DescriptionMission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Site (NNSS) for the U.S. National Nuclear Security Administration (NNSA). Our mission is to help ensure the security of the United States and its allies by providing high-hazard experimentation and incident response capabilities through operations, engineering, education, field, and integration services. We act as environmental stewards to the Site's Cold War legacy.
Our 2,750+ professional, craft, and support employees are called upon to innovate, collaborate, and deliver on some of the more difficult nuclear security challenges facing the world today.
- MSTS offers our full‑time employees highly competitive salaries and benefits packages including medical, dental, and vision; both a pension and a 401k; paid time off and 96 hours of paid holidays; relocation (if located more than 75 miles from work location); tuition assistance and reimbursement; and more.
- MSTS is a limited liability company consisting of Honeywell International Inc. (Honeywell), Jacobs Engineering Group Inc. (Jacobs), and HII Nuclear Inc.
The Senior Nuclear Engineer in the Nuclear Assurance Directorate is responsible for the development of Hazard Analysis, Documented Safety Analysis, and Technical Safety Requirement changes, as well as performing accident analysis calculations. The engineer will be assigned a project that they are expected to complete with minor support while mentoring entry‑level engineers.
Key Responsibilities- Support the performance of nuclear safety evaluations and analyses, including hazard/accident analyses, hazard categorizations, Documented Safety Analyses (DSAs), and Technical Safety Requirements (TSRs).
- Complete Unreviewed Safety Question (USQ) reviews.
- Conduct modeling and calculations with nuclear safety software to support the completion of DSAs and CSEs.
- Conduct Management Assessments of nuclear safety activities.
- Generate and maintain Nuclear Safety procedures and implement improvements to nuclear safety business processes.
- Perform related work as assigned by supervisor.
- Bachelor’s degree in an engineering program accredited by the Accreditation Board for Engineering and Technology (ABET) required for Civil, Mechanical and Electrical engineering degrees.
- Or, a calculus‑based STEM bachelor’s degree in engineering.
- Or, for architects, certification from the National Council or Architectural Registration Board (NCARB).
- Or a Professional Engineer license.
- Plus at least 5 years’ relevant experience; skill‑building experience must demonstrate deeper technical specialization or additional cross‑disciplinary knowledge; graduate research experience may be recognized.
- Degree in Mechanical, Nuclear, Chemical, or Industrial Engineering preferred.
- Demonstrated technical knowledge of calculations and applications of engineering methods.
- Applied knowledge of nuclear safety software such as Monte Carlo N‑Particle Transport (MCNP), MELCOR Accident Consequence Code System 2 (MACCS2) and Blast
X is desirable. - Knowledge of governing Department of Energy (DOE) regulations, requirements, and guidance for the development, implementation, and maintenance of nuclear safety programs and safety basis documents.
- Strong working knowledge of Code of Federal Regulations (CFR) 10 CFR 830, subpart B; DOE‑STD‑1027‑92; DOE‑STD‑1189‑2008; DOE‑STD‑3009‑2014; DOE‑STD‑3007‑2007; DOE‑HDBK‑3010‑94; DOE O 420.1C; DOE G 420.1‑1; DOE G 420.1‑2; DOE G 423.1‑1; DOE G 424.1‑1B and other applicable DOE directives and ANSI/ANS‑8 series standards.
- Ability to interpret and apply codes and standards within the discipline.
- Must possess mathematical skill and ability to understand complex data, terminology, procedures, laws, and regulations.
- Must possess planning/organizing skills and initiative.
- Must be able to employ independent judgment and apply professional knowledge to ensure that assignments are completed efficiently and on…
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