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Thermal Analysis Engineer; Mechanical Engineer II

Job in Sunnyvale, Santa Clara County, California, 94086, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-07-26
Job specializations:
  • Engineering
    Systems Engineer, Mechanical Engineer, Aerospace / Aviation / Avionics
Job Description & How to Apply Below
Position: Thermal Analysis Engineer (Mechanical Engineer II)

Thermal Analysis Engineer (Mechanical Engineer II)

Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve.

We're creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We're erasing boundaries and forming partnerships across industries and around the world. We're advancing spacecraft and the workforce to fuel the next generation. And we're reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you.

OVERVIEW:
For over 60 years, the Fleet Ballistic Missile (FBM) team has supported the Navy's mission to provide affordable and credible strategic defense. We offer unique career opportunities and challenges on a program with a rich history and exciting future. We help keep this nation and our allies secure. We are a community of engineers looking for an enthusiastic Mechanical Engineer to join the tight-knit group.

The FBM Trident II D5 Life Extension 2 program (D5LE2) is ramping up to become one of Lockheed Martin's premier Lines of Businesses that prioritizes partnership, integrity, and reliability. Learn about the Trident II D5 Fleet Ballistic Missile. If so, join us as a part of a highly-skilled analysis team for missiles and spacecraft systems!

Lockheed Martin Space is seeking a Mechanical Engineer to join our Missile Flight Sciences team in Sunnyvale, CA! This position will have the exciting opportunity support the Aerothermal team, and the successful candidate will be responsible for the following:

  • Performing thermal analyses on missile subsystem-level hardware & avionics packages for the FBM D5LE2 program
  • Ownership of computational, physics-based modeling, simulations, and results
  • Correlate model results to subsystem & package requirements and support risk mitigation
  • Work and interact with multiple engineering fields across multiple sites
  • Present key findings and results to internal and external customers & stakeholder
  • Provide recommendations to support peer and customer reviews
  • Leverage thermal analysis expertise to support key program milestone reviews
  • Provide documentation and recommendations to data packages to support key discussions, present analysis data to engineering teams, customer technical representatives, and Program Office personnel at technical interchange meetings and program milestone design reviews

Desired skills:

  • Demonstrated experience in the following topics: thermodynamic analysis, heat transfer analysis, aeroheating analysis, material properties & characterization, and computer programming (Matlab, Python, Fortran)
  • Strong mathematical, analytic, and data processing skills
  • Experience with any of the following software packages: NX Thermal (Preferred), Thermal Desktop, SINDA, TSS, Abaqus
  • Knowledge or experience with testing & instrumentation including test procedure development, instrumentation definition, test direction, and post-test model correlation
  • Excellent communication skills, both written and verbal, including MS Office proficiency
  • Experience with modern collaboration tools, such as Jira and Confluence
  • Active Top Secret clearance #Space Flight Science

Other Important Information:

  • By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.
  • Ability to work remotely:
    Employee will work on-site full-time
  • Work Schedule Information:
    Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits.
  • Work Schedule:

    9x80 every other Friday off
  • Security Clearance:
    Top Secret
  • LMCareers Business Unit: SPACE
  • Program: FBM D5LE2; FS
  • Department: 73A7A00:

    SMD Mechanical
  • Job Class:
    Mechanical Engineering
  • Job Category:
    Experienced Professional
  • City, State:
    Sunnyvale-CA
  • City:
    Sunnyvale
  • Zip: 94089
  • Virtual: no
  • Relocation/Housing Stipend Available:
    Possible
  • Req Type:
    Full-Time
  • Direct/Indirect:
    Direct

At Lockheed Martin, we use our passion for purposeful innovation to help keep people safe and solve the world's most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work. With our employees as our priority, we provide diverse career…

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