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Sandia National Laboratories Logo Sandia National Laboratories · Research and Development

Senior/Principal Mechanical Flight Test Engineer

United States, Albuquerque 117500.00 - 235700.00 USD / Year · Job Posted February 21, 2026
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Job Description

The W87-1 Modification Program at Sandia National Laboratories is working with the NNSA, U.S. Air Force and other national labs to develop a ground-based strategic warhead that improves on the safety and security elements of legacy weapons in the U.S. nuclear stockpile. This program is a critical element in our nation’s nuclear deterrence strategy. We are seeking an R&D Mechanical Engineer for the W87-1 Joint Test Assembly (JTA) & Trainer Engineering team. In this role you will contribute to a high-impact nuclear weapon modernization program, working in advanced facilities with skilled professionals across the Nuclear Security Enterprise. As a Mechanical Flight Test Engineer, you will help shape the design process from concept to delivery. This is a unique opportunity at Sandia to gain invaluable experience in a national and international priority program.

Job Responsibility

  • Collaborate with personnel across multiple Sandia organizations, as well as with external partners such as Lawrence Livermore National Laboratories, the National Nuclear Security Administration (NNSA), and Department of Defense (DOD) organizations, to ensure effective communication and teamwork
  • Engage in engineering activities, from developing system-level design concepts to testing prototypes and qualifying innovative fabrication techniques, while supporting systems and component engineering efforts across all project phases, including conceptual design studies, feasibility and cost analyses, and full-scale engineering
  • Design the mechanical architecture and system-owned components of JTA systems, ensuring the maintenance of product definitions, procedures, and mechanical envelopes
  • Work closely with a component product realization team or mission realization capability partner to solve technical problems, address issues, and mitigate risks, while collaborating across systems teams (e.g., design, requirements, qualification) to perform system integration tasks and resolve issues
  • Contribute to BDR readiness by performing detailed mechanical requirements tracing and tolerance stackups to ensure mechanical fit
  • Author documents, procedures, and requirements for subsystem and system-level deliverables, and support JTA build procedures and processes at SNL, PX, and USAF
  • Team with colleagues to understand status or issues, document lessons learned and execute deliverables to meet customer requirements
  • Iterate designs based on findings from testing and environmental assessments, ensuring that lessons learned are documented and applied to improve future designs

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
  • Ability to obtain and maintain DOE Q or equivalent 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)
  • Experience with mechanical engineering and product realization in the NNSA complex
  • Strong verbal and written communication skills, ability to work effectively in multidisciplinary teams
  • Active DOE Q clearance
  • Detail-oriented and safety-conscious attributes, with a strong emphasis on meticulousness in engineering tasks to ensure high quality, rigor, and reliability in all aspects of work
  • Possesses a solid understanding of nuclear deterrence programs and associated processes, with recent contributions to a nuclear weapon modernization program
  • Experience in using PTC CREO, PDMLink (Windchill), and Geometric Dimensioning and Tolerancing (GD&T)
  • Demonstrated ability to integrate, build, and work effectively across technical teams, to resolve issues and conduct trade-offs to identify system solutions
  • Strong organizational skills with the ability to prioritize and work efficiently under competing demands

What we offer

  • Challenging work with amazing impact that contributes to security, peace, and freedom worldwide
  • Extraordinary co-workers
  • Some of the best tools, equipment, and research facilities in the world
  • Career advancement and enrichment opportunities
  • 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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