Sr. Principal Mechanical Engineer-Structural Eng
Listed on 2026-05-16
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Engineering
Mechanical Engineer, Engineering Design & Technologists, Aerospace / Aviation / Avionics, Structural Engineer
At RTX, the world’s largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market‑leading businesses, world‑class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.
Raytheon brings 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. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.
The Mechanical Analysis and Test (MA&T) Department is responsible for ensuring structural and thermal design robustness across the Raytheon portfolio of products. From preliminary concepts to fielded weapon system support, MA&T delivers innovative structural and thermal engineering solutions utilizing methods ranging from classical fundamental & empirically based techniques to state‑of‑the‑art finite element methods leveraging industry‑leading commercial tools; all complemented and validated by tests executed in a manner to ensure cost‑effective yet technically balanced solutions.
Raytheon is seeking an experienced Senior Principal Structural Engineer with a background in high‑temperature structural materials such as refractory metals, ceramics, and ceramic matrix composites (CMCs). In this role, you will be responsible for detailed structural analysis and testing to support all phases of programs, including development and production.
What You Will Do:- Perform detailed structural analyses to support all phases of programs
- Generate test plans required to validate analyses and verify hardware compliance to customer requirements
- Analyze test data to validate and correlate models, and/or generate mechanical loads and environments
- Work with limited oversight on complex problems to provide the answers needed under program cost and schedule constraints
- Coordinate and lead technical peer reviews ensuring the technical accuracy of work product as well as acting as a reviewer for others work products
- Present results to internal stakeholders and external customers
- Generate detailed, archival technical reports
- Travel to test sites to support test or design discussion (depending on work assignment)
- Act as a technical leader (help define and develop MA&T department technical processes and tools) and lead teams to meet program milestones
The Senior Pr. Mechanical Engineer – Structural 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 unless prohibited by local laws/regulations
- A University Degree or equivalent experience and minimum 10 years prior relevant experience, or an Advanced Degree in a related field and minimum 7 years experience in engineering or other technical positions
- Experience in structural analysis (i.e. PATRAN, NASTRAN, ANSYS or equivalent software – Dynamic, Static, Non‑linear, Transient, etc.)
- An Advanced Degree in a related field and minimum 7 years experience in engineering or other technical positions
- 15+ years of professional experience in the structural analysis of complex systems that require collaboration of multiple engineering disciplines (such as a weapon system)
- Experience in structural testing: planning, organization, execution, data reduction and correlation
- Experience with dynamic shock and vibration analysis
- Experience with solid modeling CAD tool such as CREO or equivalent
- Experience with Matlab
- Experience presenting to external customers
- Ability to travel to government and other facilities in support of program activities
- Advanced degree in aforementioned disciplines. ABET is the preferred, although not required, accreditation standard
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