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Mechanical Engineer II; Thermal Analysis

Job in Sunnyvale, Santa Clara County, California, 94086, USA
Listing for: Lockheed Martin
Full Time position
Listed on 2026-07-01
Job specializations:
  • Engineering
    Systems Engineer, Aerospace / Aviation / Avionics, Mechanical Engineer, Engineering Design & Technologists
Salary/Wage Range or Industry Benchmark: 70100 - 123625 USD Yearly USD 70100.00 123625.00 YEAR
Job Description & How to Apply Below
Position: Mechanical Engineer II (Thermal Analysis)

Mechanical Engineer II (Thermal Analysis)

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!

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. Become a member 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 subsystem- and system-level thermal analysis for the FBM D5LE2 program

• Support the modernization of legacy thermal environments to inform missile hardware design

• Support post-test analysis for various test projects

• Ownership of computational, physics-based modeling & simulations from start to finish (development, assessment, results & documentation)

• Correlate model results to subsystem & system requirements and support design teams & risk mitigation

• Work and interact with multiple engineering fields across multiple sites

• Present key findings and results to internal and external customers & stakeholders

• Provide recommendations to support peer and customer 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

You can learn more about Sunnyvale, CA by visiting this link. Learn more about Lockheed Martin's comprehensive benefits package.

• Experience with NX Thermal

• Knowledge or experience with testing & instrumentation including test procedure development, instrumentation definition, test direction, and post-test model correlation

• Strong technical writing proficiency

• Experience with modern collaboration tools, such as Jira and Confluence

• Excellent communication skills, both written and verbal, including MS Office proficiency

• Active or Current Top Secret clearance #Space Flight Science

This position requires a government security clearance, you must be a US Citizen for consideration.

Pay Rate:
The annual base salary range for this position in California, Massachusetts, and New York (excluding most major metropolitan areas), Colorado, Hawaii, Illinois, Maryland, Minnesota, New Jersey, Vermont, Washington or Washington DC is $70,100 - $123,625. For states not referenced above, the salary range for this position will reflect the candidate's final work location. Please note that the salary information is a general guideline only.

Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market and business considerations when extending an offer. Benefits offered:
Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Education Assistance, Parental Leave, Paid time off, and Holidays. (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month;

accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year. This position is incentive plan eligible.

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