Mechanical Engineer Sr - E3

Posted Yesterday
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Littleton, CO, USA
In-Office
96K-178K Annually
Senior level
Aerospace • Security • Cybersecurity • Industrial
The Role
Researches, plans, designs, develops, and tests mechanical and electromechanical products and systems for space applications. Responsibilities include interpreting engineering drawings, using CAD tools and model-based product definition, applying mechanical engineering fundamentals, and supporting structures, mechanisms, materials, and analysis. The role requires communication, task ownership, and compliance with engineering standards. A DoD Secret clearance is required or must be obtainable.
Summary Generated by Built In
Standard Job 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. 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!


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.

Basic Qualifications
  • Bachelors or higher degree from an accredited college in a related discipline or combination of experience/education
  • Mechanical design experience that includes the interpretation of engineering design drawings.
  • Experience with engineering CAD tools (Creo, Solid Works, I-DEAS, etc.) and model based product definition.
  • Understanding of mechanical engineering fundamentals including structures, mechanisms, materials and analysis.
  • Candidate must have good oral, written, and presentation communication skills.
  • Must be a U.S. Citizen and have the ability to obtain and maintain a DoD Secret security clearance.
Desired Skills
  • Experience with agile / go fast program execution
  • Self starter with outside the box thinking
  • Ability and desire to assume ownership of tasks and drive to closure quickly and efficiently.
  • Experience with application of Geometric Dimensioning & Tolerancing (GD&T) and ASME Y14.5.
  • Experience with Engineering Data Product release process within the Engineering Product Data Management (EPDM) system.
  • Knowledge of LM Space command media.
  • Working knowledge of industry standards and federal regulations including ANSI, OSHA, and AWS standards applicable to mechanical systems. 
  • Active DoD Secret security clearance
  • Proficient in AI prompting as it applies to this position and practice

Pay Information

Full-Time Salary Range: $95900.00 - $178100.00

At Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow—both professionally and personally.

The salary range for this position is as listed on the requisition. Please note that the salary information listed 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(work location) and business considerations when extending an offer.  

Benefits offered: Medical, Dental, Vision, Flexible work arrangements and schedules (e.g., 4x10), 401(k) match, Paid time off, Holidays, Parental Leave, EAP, Flexible Spending Accounts, Education Assistance, Life Insurance, Short-Term Disability, and Long-Term Disability.

  • Annual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics.
  • For (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.

Skills Required

  • Bachelor's degree or higher from an accredited college in a related discipline, or an equivalent combination of experience and education
  • Mechanical design experience, including interpretation of engineering design drawings
  • Experience with engineering CAD tools such as Creo, SolidWorks, or I-DEAS
  • Experience with model-based product definition
  • Understanding of mechanical engineering fundamentals, including structures, mechanisms, materials, and analysis
  • Good oral, written, and presentation communication skills
  • U.S. citizenship
  • Ability to obtain and maintain a DoD Secret security clearance
  • Experience with agile or rapid program execution
  • Experience applying GD&T and ASME Y14.5
  • Experience with engineering data product release processes in an EPDM system
  • Knowledge of Lockheed Martin Space command media
  • Knowledge of ANSI, OSHA, and AWS standards applicable to mechanical systems
  • Active DoD Secret security clearance
  • Proficiency in AI prompting as applied to the position

Lockheed Martin Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Lockheed Martin and has not been reviewed or approved by Lockheed Martin.

  • Retirement Support — Retirement benefits are described as a standout element, with a strong 401(k) program and options like an employee stock purchase plan. Feedback suggests these features meaningfully enhance total compensation and long‑term financial security.
  • Healthcare Strength — Healthcare coverage is portrayed as comprehensive from day one, with multiple plan options, mental health resources, and virtual care. Wellness supports such as on‑site services and preventive programs are also highlighted.
  • Flexible Benefits — Work arrangements often include compressed schedules and telework, contributing to a favorable work‑life balance. Feedback suggests this flexibility is a key reason many view the overall package positively.

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The Company
HQ: Bethesda, MD
108,588 Employees
Year Founded: 1912

What We Do

Customer Focus, Innovation and Purpose are Built Into Everything We Do. Lockheed Martin. Your Mission is Ours ™. Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services.

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