Mechanical Engineer Sr - E3

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.

NXGB began as a multi-year LM IRAD flight demo of an affordable, producible, and advanced intermediate range boost-glide hypersonic vehicle. It is an LM Space Key Investment (KI) and is in the LM Space Top 10 Priority Captures for 2026. The NXGB portfolio is extending beyond the IRAD to include a new SHY CRAD contract with a second flight opportunity. The IRAD program is approaching CDR and moving into AI&T. 

We are currently seeking a Mechanical Engineer to join our NXGB design team in Littleton, CO.  In this role you will :

• 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. To promote the sharing of ideas, we at Lockheed Martin champion an inclusive work environment that supports differences and big-picture thinking.

The information below reflects the standard job description for this position 

Researches, plans, designs and develops mechanical products and systems such as instruments, controls, robots, engines, machines and mechanical, thermal hydraulic or heat transfer systems for production, transmission, measurement, and use of energy. Applies research to the planning, design, development, and testing of mechanical and/or electromechanical systems, instruments, controls, engines, and/or machines.

• 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, surface treatment and assembly

• Current inerim or final Secret clearance

• 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)