Senior Mechanical Engineer - Test Equipment, Onsite (Tucson, AZ)

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 Test Equipment Engineering (TEE) Directorate is a multi-discipline organization responsible for developing test solutions for all Raytheon Missile Defense products. We are hands-on, designing with the latest technology and tools, and integrate state of the art test solutions with the most advanced engineering systems in the world. TEE products are located in engineering labs, in the field, and in production environments utilized for weapon system product verification, qualification, test data analysis, and production test solution development. TEE has job opportunities across all phases of the engineering lifecycle, including demonstrations, early engineering tests, design verification tests, production, and sustainment.

This role is 100% onsite in Tucson, AZ.

What You Will Do

• Create mechanical test systems used across advanced environments—vibration, thermal, hydraulic, RF, electro‑optical, etc.

• Build and validate test solutions that deliver high accuracy and reliability in demanding production settings

• Diagnose production issues and recommend design improvements that elevate system performance

• Support and coach less experienced engineers while contributing to all phases of the test equipment engineering lifecycle, from design to sustainment.

Qualifications You Must Have

• Typically requires a Bachelor’s degree in a STEM field and five (5) years of relevant engineering experience, OR an advanced degree in related field and minimum three (3) years of related work experience

• Minimum five (5) years of experience in mechanical design and/or production support

• Minimum five (5) years of experience with 3D CAD modeling tools (CREO / ProE preferred)

• Working knowledge of geometric dimensioning and tolerancing (GD&T)

• Experience creating mechanical drawings or engineering documentation

• Ability to obtain and maintain a U.S. government security clearance (U.S. citizenship required)

Qualifications We Prefer

• Experience with mechanical or electro‑mechanical packaging

• Experience creating complex drawing or design packages

• Familiarity with configuration management tools (e.g., Windchill, cPDM)

• Exposure to Model‑Based Engineering or Model‑Based Design

• Experience in areas such as materials, thermal/structural analysis, control systems, electrical integration, or large assembly design

• Experience with environmental or qualification testing (vibration, shock, thermal, etc.)

• Exposure to systems engineering

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.

• This position offers relocation

Learn More & Apply Now

• This is an onsite role. Employees who are working in onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essent