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Sandia National Laboratories Logo Sandia National Laboratories · Research and Development

Cleared senior principal lead r&d mechanical systems engineer

United States, Livermore 139900.00 - 280600.00 USD / Year · Job Posted March 14, 2026
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Job Description

The W87-0 Sentinel Integration program is seeking an experienced R&D Mechanical Engineer to join our team as the Lead Systems Mechanical Engineer for both the W87-0 Joint Test Assembly and Sentinel Integration flight test vehicle programs. Our teams are designing and building a suite of flight test vehicles to enable W87-0 integration and sustainment on the Air Force's Sentinel missile. This is a highly collaborative work environment where successful candidates will be involved in design maturation, hardware assembly, qualification testing, production activities, and flight testing.

Job Responsibility

  • Lead the systems mechanical design, assembly, and production teams for the W87-0 Joint Test Assembly program
  • Responsible for Mechanical systems leadership over the Sentinel Integration flight test vehicle programs
  • Develop detailed understanding of customer requirements and ensure maturation of requirements for specific aspect of the system and components
  • Collaborate with system engineers and component engineers
  • provide technical guidance on critical design elements
  • Define, design, analyze, and review mechanical system and subsystem assemblies, drawings, models, etc.
  • Team with subject matter experts to plan, execute and analyze data from advanced experiments and modeling and simulation
  • Mentor early career mechanical engineering team members
  • Maintain and update production documentation
  • Perform technical analyses and trade studies to inform risk-based decisions
  • Plan and execute testing for environmental, function, and safety qualification
  • Integrate and test subassemblies
  • Provide oversight and guidance for flight test vehicle assembly procedures, production plans, and CONOPS
  • Develop systems-level understanding of collected data and support anomaly resolution processes
  • Present to diverse audiences at technical design reviews and programmatic meetings
  • Represent Sandia on internal and external multi-organizational project teams

Requirements

  • A Bachelor's degree in a relevant discipline and five (5) years of directly relevant experience, or an equivalent combination of directly relevant education and engineering or scientific experience that demonstrates the knowledge, skills, and ability to perform independent research and development
  • Active DOE Q or DoD TS security clearance

Nice to have

  • Graduate degree in Mechanical Engineering or a highly related field where an independent research project was a graduation requirement (e.g., independent project, thesis, or dissertation)
  • Demonstrated experience with mechanical and/or systems engineering and product realization within the NNSA complex
  • Strong verbal and written communication skills
  • ability to work effectively in multidisciplinary teams
  • Bachelor's Degree in Mechanical Engineering, Manufacturing Engineering or in a related field plus 8 years of relevant experience or Master's Degree in Mechanical Engineering or in a related field plus 4 or more years of relevant experience, or combination of education and equivalent engineering or scientific experience and/or achievements that demonstrate the knowledge, skills, and ability to perform independent research and development
  • Experience working with Nuclear Security Enterprise (NSE) laboratories and plants including Pantex, Kansas City National Security Campus (KCNSC), Lawrence Livermore Laboratory (LLNL) and Kansas City National Security Campus/New Mexico Operations (KCNSC/NMO)
  • Demonstrated team experience: effective leadership, delegation, teamwork, negotiation, conflict resolution
  • Knowledge and experience with ND systems and subsystems

What we offer

  • Flexible work arrangements for many positions include 9/80 (work 80 hours every two weeks, with every other Friday off) and 4/10 (work 4 ten-hour days each week) compressed workweeks, part-time work, and telecommuting (a mix of onsite work and working from home)
  • Generous vacation, strong medical and other benefits, competitive 401k, learning opportunities, relocation assistance and amenities aimed at creating a solid work/life balance
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