Principal Mechanical Engineer - 3rd Shift

Date Posted:

2026-03-12

Country:

United States of America

Location:

US-AZ-TUCSON-807 ~ 1151 E Hermans Rd ~ BLDG 807

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 products and subsystems.

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.

This position is onsite in Tucson, Arizona and will support 3rd shift with a schedule of Monday – Friday 11pm -8am and may require up to 10% travel to government supplier and other Raytheon facilities.

What You Will Do:

• 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.
• Work through engineering problems associated with large structures, welded assemblies, component integration, mechanisms, electronic assemblies
• 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 analysis 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
• Experience with 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 prior to the start date. 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 to 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
• Experience in mechanical sub-systems packaging, materials, thermal, structural analysis, energetics principles, control systems, interconnect, airframe, or large assembly development
• Willingness to support tasks as experience allows relative to both design development and production support
• Proficient in CREO (modeling and drawing) and Windchill (PDM)
• Ability to travel to g