Senior Mechanical Engineer

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Senior Mechanical Engineer

Full Time

King of Prussia PA 19487 USA

Posted 03/20/2026

Job Descriptionback to top

Description: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. Were creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security vision. Were erasing boundaries and forming partnerships across industries and around the world. Were advancing spacecraft and the workforce to fuel the next generation. And were 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.

Lockheed Martin Space is seeking a Mechanical Engineer to join our FBM Reentry Mechanical team in King of Prussia, PA!

Responsibilities include but are not limited to:

Work closely with engineers, manufacturing and technical management and will be providing the integration, design and technical solutions including payload structures, thermal products and integration of mechanical, propulsion, electrical and RF components
Independently develops and provides mechanical design solutions, of varying complexity, using solid models, detailed drawings, and release of engineering work products via Creo parametric software.
Independently review requirements, from various sources (instrumentation, dynamics, stress, systems, thermal, manufacturing, etc.), to ensure that applicable requirements are flowed into the design of assigned products.
Provides frequent interaction and collaboration with program leadership, analysts, peers, configuration management, and manufacturing, to ensure program requirements and schedules are met.
Drives to completion of program achievements by the release of accurate, error-free, affordable and producible engineering designs.
Basic Qualifications:
Experience creating 3D designs in CREO or equivalent
Knowledge of ASME Y14.5 including GD&T and tolerance stack up analyses.
Familiar with manufacturing processes including documentation, machining, welding, heat treatment, and/or surface treatment and assembly
Active secret clearance
Desired Skills:
Ability to collaborate effectively with adjacent disciplines (systems engineering, electronics, stress/thermal analysis, configuration management, production, test, quality)
Knowledgeable at a systems level in the areas of stress, propulsion, materials
CPE (certified Principle Engineer) and MRB (Manufacturing Review Board) experience
Experience with flight hardware and ground support equipment design
Hands-on hardware experience
Additive manufacturing experience
Familiar with design for Manufacturability (DFM)
Familiarity with Basis of Estimates (BOEs)
Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: Secret
Other Important Information You Should Know
Expression of Interest: 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: Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility.
Work Schedules: 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.
Schedule for this Position: 9x80 every other Friday off
Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.
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.
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 opportunities designed to propel, develop, and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility.

If this sounds like a culture you connect with, youre invited to apply for this role. Or, 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.
Experience Level: Experienced Professional
Business Unit: SPACE
Relocation Available: Possible
Career Area: Mechanical Engineering
Type: Full-Time
Shift: First

Job Requirementsback to top

Experience creating 3D designs in CREO or equivalent
Knowledge of ASME Y14.5 including GD&T and tolerance stack up analyses.
Familiar with manufacturing processes including documentation, machining, welding, heat treatment, and/or surface treatment and assembly
Active secret clearance

Job Detailsback to top

Location King of Prussia, PA, 19487, United States

Categories Manufacturing & Production

Sec Clearances Secret

Pref Degree Bachelors

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Contact Informationback to top

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Job Code 713102BR

Senior Mechanical Engineer