Mechanical Design Engineer Sr - E3

Posted 4 Days Ago
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Grand Prairie, TX, USA
Hybrid
85K-158K Annually
Senior level
Aerospace • Security • Cybersecurity • Industrial
The Role
Designs and releases mechanical components, assemblies, layouts, drawings, BOMs, and interface control documentation for missile systems. Uses CREO and Windchill while coordinating with cross-functional teams, suppliers, and analysts. Manages engineering changes, design reviews, trade studies, tolerance analysis, mass properties, testing, and root-cause investigations. The role is based onsite in Grand Prairie, Texas and requires U.S. citizenship with Secret clearance eligibility.
Summary Generated by Built In
Standard Job Description

Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration, and sustainment of advanced technology systems, products, and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas.

We are experiencing growth and are looking for a Senior Mechanical Engineer for the Missiles & Fire Control (MFC) JR3 missile team. Our team drives innovative fire control solutions, turning concepts into flight ready hardware by developing, testing, and fielding cutting edge missile subsystems.


What You Will Be Doing

As the Senior Mechanical Design Engineer you will be responsible for delivering high quality mechanical designs that enable rapid technology insertion. Working side by side with cross functional experts and external suppliers, you’ll lead the creation, release, and evolution of drawings, bills of material, and design data that underpin our next generation fire support capabilities.

Your responsibilities will include:

  • Developing and releasing CREO layouts and detailed drawings for interface control documents (ICDs), components, sub assemblies, full assemblies, and integration test articles.
  • Building accurate BOMs, generating parts and assemblies, and maintaining design documentation in Windchill PLM.
  • Coordinating the Integrated Product Team (IPT), suppliers, Global Supply Chain (GSC), electronic packaging, optics, and structural/thermal/material analysts to ensure design excellence and schedule adherence.
  • Managing drawing releases, responding to change requests (CRs), creating change notices (CNs), and presenting/supporting change boards and design reviews.
  • Conducting design trade studies that evaluate cost, weight, performance, and structural/thermal benefits to guide optimal engineering decisions.
  • Participating in root cause and corrective action investigations, providing technical input that resolves issues quickly and prevents recurrence.

This position is in Grand Prairie, TX.

MUST BE A U.S. CITIZEN - This position is located at a facility that requires special access. The selected candidate must be able to obtain a secret clearance.

Basic Qualifications
  • Bachelor's Degree in Mechanical or Aerospace Engineering from with a minimum of 5 years of relevant experience.
  • Proficient in CAD systems, perfer CREO and Windchill.
  • Knowledge of Geometric Dimensioning and Tolerancing in accordance with ASME Y14.5 and demonstrated perform complex system-level tolerance analysis.
  • Must have a Secret clearance or the ability to obtain a clearance, therefore you must be a US Citizen.
Desired Skills
  • Experience with Design Validation or Qualification Testing.
  • Experience evaluating SDRLs (Supplier Document Requirements List).
  • MRBE experience or ability to achieve MRBE certification.
  • Experience with managing mass properties.
  • Demonstrated success assisting/managing component supplier development and processing supplier changes.
  • Missile or launch pod program experience.
  • Active Secret Clearance. 

Pay Information

Full-Time Salary Range: $85300.00 - $158300.00

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 in Mechanical or Aerospace Engineering
  • At least 5 years of relevant engineering experience
  • Proficiency with CAD systems, preferably CREO and Windchill
  • Knowledge of Geometric Dimensioning and Tolerancing according to ASME Y14.5
  • Experience performing complex system-level tolerance analysis
  • U.S. citizenship
  • Secret clearance or ability to obtain a Secret clearance
  • Design validation or qualification testing experience
  • Experience evaluating Supplier Document Requirements Lists (SDRLs)
  • MRBE experience or ability to achieve MRBE certification
  • Experience managing mass properties
  • Experience managing component supplier development and processing supplier changes
  • Missile or launch pod program experience
  • Active Secret clearance

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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