Sr. Principal Low Observable Materials Engineer

Date Posted:

2026-11-02



Country:

United States of America



Location:

US-AZ-TUCSON-827C ~ 1151 E Hermans Rd ~ BLDG 827C (External Site)



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:

Secret - Current



Security Clearance Status:

Active and existing security clearance required on day 1

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.

Raytheon is an industry leader in Stealth Technology. We are involved in all phases of development, production, and maintenance of Low Observable (LO) weapon systems. You will be working on cutting-edge projects, developing next-generation materials, and integrating advanced signature control techniques into our defense systems.

What You Will Do

• You will be responsible for material and process development, characterization and system level integration in support of all Raytheon product lines and new business.
• Material performance predictions and measurement tests of developmental and production systems.
• You will be expected to perform material measurements of constitutive and RF attenuation properties and generate predicted material performance using Computational Electromagnetic Codes (CEM) tools.
• You will work in integrated product teams to incorporate advanced signature control techniques into deliverable products and aid in the assessment of system performance.
• Material formulation and development
• Fabrication process development
• Composites operations support
• Material testing and characterization (RF, mechanical, physical)
• Preparation of engineering documentation
• Customer and supplier interface
• Participation/leadership of and program reviews
• Project management
• Mentor early career engineers.
• Strong ownership of tasks; ability to function as Materials Lead on Integrated Product Teams

This job is in Tucson, AZ and the position is onsite

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience, or An Advanced Degree in a related field and minimum 7 years experience
• Experience in Low Observables or Radar materials
• Experience in any of the following: Material characterization, or performance testing and/or prediction, and/or design experience, material down-select and/or integration on to air vehicle.
• Experience with customer and supplier collaboration

Qualifications We Prefer

• Master’s degree in Science, Technology, Engineering, or Mathematics (STEM)
• High temperature LO materials characterization, testing, and integration
• Experience with intrinsic property analytical techniques for the electromagnetic characterization of material.
• Competence in utilizing thermal analysis techniques (DMA, TMA, TGA, DSC) properties.
• Agile communicator, with effective interaction style that fosters collaboration with a multi-disciplined team, suppliers, and customers.
• Skilled at planning, prioritizing, and executing projects/programs to successful completions.
• Proposal Writing and Basis of Estimate (BOE) development experience.
• CAD software proficiency and technical programming experience (Python, C++, MATLAB, etc.)
• Experience with Infrared signature analysis and control.
• A current active U.S. Government in-scope DoD Top Secret security clearance with the ability to obtain and maintain Special Program Access (SAP).

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.

Relocation Eligibility

Learn More & Apply Now!

• Please consider the following role type definition as you apply for this role. Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

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As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 132,400 USD - 251,600 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.
Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.
Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.
This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.
RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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