Principal Mechanical Engineer

Date Posted:

2026-05-27

Country:

United States of America

Location:

US-AL-HUNTSVILLE-315 ~ 315 Bob Heath Dr ~ BOB HEATH

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​

Security Clearance Type:

DoD Clearance: Secret

Security Clearance Status:

Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. Our team solves tough, meaningful problems that create a safer, more secure world. 

The Shipboard Effectors Department is currently searching for an experienced Principal Mechanical Engineer to support Standard Missile and Patriot products and subsystems in Huntsville, Alabama.

This Principal Mechanical Engineering position performs in alignment to expectations in the design, development and production support areas associated with mechanical designs, validation principals, qualification processes, procurement, and production processes across a design life cycle.  Work may include requirements understanding, concept development, DFMAs, PFMEAs, margin analysis, technical data package (TDP) development, application of geometric dimensioning and tolerancing principals, engineering test principals, preparation of technical analysis reports, and design review presentation.

What You Will Do:

• Contribute to one or more of our contract-funded and independent research efforts, each of which is at a different phase of development (proposal, design, and integration/test). Engineers are generally assigned to one effort at a time but may work multiple efforts over the course of several years.
• Communicate with cross-disciplined, engineering team members and suppliers to analyze, model, and document the design technical data package (TDP) and its capabilities and compliance to requirements.
• Work under limited supervision and act as the responsible engineer often in a project management role over entire subsystems within an effort. This often requires the ability to direct, delegate and review the work of others
• Perform mechanical design, development, and documentation of components, sub-assemblies, and major end items for defense system equipment in accordance with system requirements.
• Collaborating across multiple disciplines with Structural and Thermal analyst, Materials Engineering, Quality, Safety, Supply Chain.
• Lead a team(s) with limited supervision and meet commitments for assigned schedule, financial, and technical goals.
• Support suppliers with product integration
• Strong understanding of Thermal, Structural, Dynamic, and Reliability analysis to provide inputs and support. Incorporate results and findings into mechanical design.
• Perform and review tolerance analyses to ensure form, fit, and function are as intended by design for the use-application.
• Improve new and existing designs using Design for Manufacture and Assembly (DFMA) and Design for Producibility principles.
• Apply knowledge and experience in technical problem solving and hardware development in a fast paced, team environment.

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or An Advanced Degree in a related field and minimum 5 years experience.
• Experience with CREO (or equivalent CAD tool)
• Experience developing and executing a plan to develop a mechanical component or subsystem
• Understanding of Geometric Dimensioning and Tolerancing (GD&T), basic tolerance analyses, and drawing practices and interpretation for mechanical hardware
• The ability to obtain and maintain a US security clearance. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance 

Qualifications We Value:

• Four years of professional experience related mechanical design and documentation in Aerospace & Defense industry
• Advanced degree in Engineering discipline
• Proficient in 3D CAD tools (modeling and drawing)
• Geometric Dimensioning & Tolerancing (GD&T) per ANSI Y14.5
• Ability to work in teams or independently, flexible, demonstrates initiative
• Experie