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Senior NNSS Mechanical Engineer (Nevada - Las Vegas)

Lawrence Livermore National Laboratory
Las Vegas, United Statesfull_timeVerifiedPosted 21 May 2025
💰 $256,824/yr($114,912/yr$256,824/yr)

About the role

Company Description

Join us and make YOUR mark on the World!

Are you interested in joining some of the brightest talent in the world to strengthen the United States’ security? Come join Lawrence Livermore National Laboratory (LLNL) where our employees apply their expertise to create solutions for BIG ideas that make our world a better place.

We are committed to a diverse and equitable workforce with an inclusive culture that values and celebrates the diversity of our people, talents, ideas, experiences, and perspectives. This is important for continued success of the Laboratory’s mission.

Pay Range

$114,912 - $214,032 Annually for the SES.3 level
$137,856 - $256,824 Annually for the SES.4 level

This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting; pay will not be below any applicable local minimum wage.  An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs.

Job Description

We have an opening for a Senior Mechanical Engineer to participate in new and ongoing projects at the Nevada National Security Site (NNSS). You will lead the design, deployment, fabrication and assembly of various nuclear weapon components; surveillance of nuclear stockpile components; and engineering testing for evaluation and maintenance of the enduring and future nuclear weapon stockpile at several facilities in the United States, primarily supporting the work at the Device Assembly Facility (DAF) in Nevada. You will interface with colleagues at other National Laboratories and Production Agencies, National Nuclear Security Administration (NNSA), and Department of Defense (DoD) and their contractors. This position is in the Defense Technologies Engineering Division (DTED), within the Engineering Directorate and primary job responsibility will occur at the NNSS. DTED provides support to Strategic Deterrence (SD) Programs.

This position will be filled at either level based on knowledge and related experience as assessed by the hiring team. Additional job responsibilities (outlined below) will be assigned if hired at the higher level. 

You will 

  • Provide technical expertise in engineering requirements, develop conceptual designs, and perform supporting analyses of complex mechanical systems, test prototypes, and associated diagnostics.
  • Lead and/or provide guidance and technical direction to multidisciplinary project teams in a growing, dynamic environment.
  • Lead team members in the execution of the detail design process, component part fabrication, and unit assembly.
  • Provide expertise for engineering relevant subjects and provide technical guidance in development of solutions to complex problems that may not be well defined.
  • Produce safety and engineering documentation, lead in engineering design reviews, and collaborate in the development of innovative methods and technology.
  • Produce advanced conceptual and detail designs in support of on-going projects.
  • Lead engineering testing operations, analyze results, and write reports.
  • Prepare, present, and explain written and verbal presentations of technical work, including providing advice to management.
  • Oversee detailed plans, schedules, and budgets for project activities, focusing on defining, developing, and deploying critical components consistent with schedule and budget constraints.
  • Maintain and ensure quality standards for deliverables, leveraging team members’ skills to successfully complete complex projects.
  • Coordinate project interfaces and deployment, including interfacing with other organizations internal and external to the Laboratory.
  • Perform other duties as assigned.

Additional job responsibilities, at the SES.4 level

  • Provide expert capability in solving highly complex problems, and apply highly advanced engineering knowledge to resolve technical and programmatic issues.
  • Perform advanced level technical tasks to provide solutions for a diverse range of highly complex issues.
  • Set broad project vision and strategy and influence technical direction for self and others.
  • Manage scope of work that involves many parallel tasks requiring the resolution of conflicting work requirements, as well as prioritization of tasks toward targets.
  • Collaborate with sponsors/customers and lead industry partners to address sponsor/customer needs from the Subject Matter Expert (SME) perspective.

Qualifications

  • Ability to obtain and maintain a U.S. DOE Q-level security clea

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Company

Lawrence Livermore National Laboratory

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