Thermal Engineer Senior (Level 3)

About the Team

Space and strategic defense systems operate in some of the most unforgiving environments imaginable. Success depends on precision — and thermal performance is often the difference between mission success and mission failure.

At Lockheed Martin Space, we are redefining resilience and speed through our 21st Century Security® vision. We don't just build systems — we engineer survivability, performance, and reliability into every component. Our people are some of the greatest minds in the industry, truly making Lockheed Martin a great place to work. We use our passion for purposeful innovation to help keep people safe and solve the world's most complex challenges.

With our employees as our priority, we provide diverse career opportunities designed to propel, develop, and boost agility. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility.

About the Role

As a Level 4 Thermal Engineer, you will serve as a technical leader driving the thermal architecture of advanced missile systems from concept through qualification and production. This position supports spacecraft, missile, hypersonic, or other advanced aerospace platforms operating in extreme and highly dynamic environments.

This is a highly collaborative, fast-paced environment where your technical judgment and leadership will directly influence system-level performance. You will partner across structures, materials, propulsion, manufacturing, and quality to develop producible, cost-effective thermal solutions. If you're looking for ownership, influence, and the opportunity to solve complex, high-consequence engineering challenges — this role is built for you.

Hiring Process & Application

The application window will close in 90 days; applicants are encouraged to apply within 5 - 30 days of the requisition posting date in order to receive optimal consideration. 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.

If you are unsure whether your experience aligns with the requirements of this position, we encourage you to search on Lockheed Martin Jobs and apply for roles that align with your qualifications.

Equal Opportunity & Culture

Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics. We provide flexible schedules, competitive pay, and comprehensive benefits to enable our employees to live a healthy, fulfilling life at and outside of work.

Work Location & Schedule

This position is onsite full-time and will be performed at a designated Lockheed Martin facility. Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees, ranging from standard 40 hours over a five-day work week to condensed schedules.