Senior Principal Mechanical Engineer, Castings & Lead Design

RTX; Provo (UT); On-site; USD 132,000 - 252,000; Full time

Benefits offered by this job

Medical, dental, vision

401(k) match

Paid time off

Employee Scholar Program

Parental leave

Flexible spending accounts

Job summary

RTX is seeking a Senior Principal Mechanical Engineer (P5) in Tucson to lead design and development of producible, high‑performance mechanical solutions for air launched systems. You will guide cross‑functional teams and ensure readiness across design, analysis, and manufacturing through DOE, DFMA, and GD&T processes.

Join a multi‑discipline team focused on delivering advanced hardware, collaborating with suppliers, and supporting full lifecycle integration on missile programs.

Qualifications

• Requires STEM degree and 10+ years' relevant experience.
• Experience in a technical leadership role across full development lifecycle.
• Experience with aluminum casting and machining.
• Willingness to travel domestically up to 75%.
• Experience leading trade studies; design development and integration.
• Experience with First Article Inspection (FAI).
• Experience with ANSI/ASME Y14.5 GD&T and tolerance analysis.
• Proficiency in CREO (Pro/E) or similar 3D CAD.
• Experience with suppliers and missile programs.
• Ability to review technical documentation in production.

Responsibilities

• Perform mechanical design, development, and documentation of components, sub-assemblies, and major end items.
• Lead and mentor mechanical engineering teams while meeting schedule, cost, and technical objectives.
• Collaborate with analysts, materials, quality, safety, supply chain, and program leadership to refine designs.
• Support factories and suppliers with product development, integration, troubleshooting, and obsolescence management.
• Develop and maintain the technical data package (TDP) for compliance.

Skills

STEM degree

10+ years experience

Technical leadership

Aluminum casting

Travel 75%

Trade studies

First Article Inspection

GD&T

CREO CAD

Missile programs

Supplier engagement

Education

STEM degree

Tools

CREO

Job description

RTX is seeking a Senior Principal Mechanical Engineer (P5) in Tucson to lead design and development of producible, high‑performance mechanical solutions for air launched systems. You will guide cross‑functional teams and ensure readiness across design, analysis, and manufacturing through DOE, DFMA, and GD&T processes.

Join a multi‑discipline team focused on delivering advanced hardware, collaborating with suppliers, and supporting full lifecycle integration on missile programs.