Senior Principal Mechanical Engineer - Castings & Aerospace

RTX; San Diego (CA); On-site; USD 132,000 - 252,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401(k) match

Paid time off and holidays

Parental leave

Employee Scholar Program

Job summary

RTX is seeking a Senior Principal Mechanical Engineer (P5) for the Air Launched Effectors ALE AUR group. The role requires leading design, analysis, and production support for military hardware, with collaboration across cross-functional teams and suppliers domestically and internationally.

The ideal candidate has advanced CAD skills (CREO), strong GD&T knowledge, and a proven track record in aluminum casting, FAI, and full lifecycle development.

Qualifications

• Typically requires STEM degree and 10+ years of experience, or advanced degree with 7+ years.
• Experience in technical leadership across full development lifecycle.
• Experience with aluminum casting and machining processes.
• Ability to travel domestically up to 75% to casting and machining suppliers.
• Experience leading trade studies and design & test support.
• Experience with FAI and ANSI/ASME Y14.5 GD&T.
• Proficiency in 3D CAD tools such as CREO/Pro/E.

Responsibilities

• Perform mechanical design, development, and documentation of components and major end items.
• Lead and mentor mechanical engineering teams to meet schedule, cost, and tech goals.
• Collaborate with analysts, materials, quality, and program leadership to refine designs.
• Support factories and suppliers with product development, troubleshooting, and obsolescence management.
• Conduct trade studies and participate in design peer reviews.
• Apply thermal, structural, dynamic, and reliability analysis to improve designs.
• Develop and maintain the technical data package (TDP).
• Serve as subsystem lead directing work with limited supervision.

Skills

Technical leadership

Castings

GD&T

CREO (Pro/E)

3D CAD

Travel up to 75%

Education

Bachelor's degree in STEM

Advanced Degree (preferred)

Tools

CREO

Pro/E

Job description

RTX is seeking a Senior Principal Mechanical Engineer (P5) for the Air Launched Effectors ALE AUR group. The role requires leading design, analysis, and production support for military hardware, with collaboration across cross-functional teams and suppliers domestically and internationally.

The ideal candidate has advanced CAD skills (CREO), strong GD&T knowledge, and a proven track record in aluminum casting, FAI, and full lifecycle development.