Senior Mechanical Engineer, DoD Programs – Tucson Onsite

RTX; San Diego (CA); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

401(k) match

Paid time off

Job summary

RTX in Tucson, AZ is seeking a Principal Mechanical Engineer to lead hardware development across multiple product lines. You will design, document, and oversee end items from concept through production, collaborating with analysts, materials, and quality teams to refine solutions.

The role requires 8+ years in mechanical design leadership, expertise in CREO and GD&T, and the ability to travel domestically. An Advanced Degree is preferred and a DoD clearance is required.

Qualifications

• 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 in technical leadership across the mechanical product development lifecycle, including requirements development, trade studies, design, integration, and/or test.
• Experience working across multiple functional and discipline areas to resolve technical challenges and drive development of mechanical components and/or subsystems.
• Experience creating, releasing, and/or updating mechanical technical data packages and interpreting technical documentation in a production environment.
• Experience with CREO (or equivalent CAD tools).
• Experience with the application of Geometric Dimensioning and Tolerancing (GD&T), including basic tolerance analyses and drawing interpretation.

Responsibilities

• Perform mechanical design, development, and documentation of components, sub‑assemblies, and major end items in accordance with system requirements.
• Lead and mentor mechanical engineering teams while meeting schedule, financial, and technical objectives.
• Collaborate with structural/thermal analysts, materials engineering, quality, safety, supply chain, operations, and program leadership to develop and refine design solutions.
• Support factories and suppliers with product development, integration, troubleshooting, and obsolescence management, domestically and internationally.
• Conduct trade studies, participate in design peer reviews, and resolve technical action items.
• Apply thermal, structural, dynamic, and reliability analysis results to improve mechanical designs.
• Apply Geometric Dimensioning and Tolerancing (GD&T) principles, including performing and reviewing tolerance analyses to ensure proper form, fit, and function.
• Improve designs using DFMA and producibility principles.
• Develop and maintain the technical data package (TDP), ensuring capabilities and requirements compliance.
• Serve as responsible engineer or subsystem lead, directing and reviewing work from team members with limited supervision.
• Utilize Raytheon hardware tools, processes, and standards across all phases of development.
• Support First Article Inspection (FAI) and Raytheon Source Inspection (RSI) in partnership with Quality Engineering.
• Contribute to one or more of our contract‑funded and internal research projects at varying stages of proposal, design, and integration/test.

Skills

Mechanical design leadership

Documentation

Collaboration across disciplines

DFMA knowledge

GD&T application

Communication skills

Education

STEM degree

Advanced degree (preferred)

Tools

CREO

Windchill

Job description

RTX in Tucson, AZ is seeking a Principal Mechanical Engineer to lead hardware development across multiple product lines. You will design, document, and oversee end items from concept through production, collaborating with analysts, materials, and quality teams to refine solutions.

The role requires 8+ years in mechanical design leadership, expertise in CREO and GD&T, and the ability to travel domestically. An Advanced Degree is preferred and a DoD clearance is required.