Principal Mechanical Engineer

Prattwhitney; El Segundo (CA); On-site; USD 118,000 - 225,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Life insurance

401(k) match

Flexible work schedules

Paid time off

Job summary

Raytheon in El Segundo, CA is seeking a Principal Engineer to join the Space & Airborne Power & Digital Department, supporting analog mechanism control designs for circuit card assemblies and units. You will emphasize design for manufacturing, assembly, test, and cost considerations.

You will lead a mechanical engineering team, collaborate across disciplines, and mentor junior engineers while traveling up to 25% as needed on program milestones.

Qualifications

• Bachelor's Degree in a Science, Technology, Engineering, or Mathematics related field and minimum 8 years prior relevant experience, or An Advanced Degree in a related field and minimum 5 years experience.
• Eight years of experience in Electronics packaging design, integration, and production support.
• Experience using CREO CAD design and documentation tools or similar 3D solid modeling software with a configuration and data management environment.
• Systems engineering thought process with analytical skills background.

Responsibilities

• Develop innovative technical solutions across the entire product lifecycle for missiles and launchers and related electronics.
• Perform mechanical design analyses to ensure form, fit, and function as intended.
• Support component level design and test reviews.
• Mentor and guide engineers, collaborating with management and customers.

Skills

Electronics packaging design

Systems engineering

Mentoring

Cross-functional collaboration

Proposal & lifecycle

Education

Bachelor's Degree in STEM

Advanced Degree in engineering/math/physics

Tools

CREO CAD

GD&T

Job description

Date Posted: 2026-09-24 Country: United States of America Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract. Security Clearance Type: None/Not Required Security Clearance Status: Not Required

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 looking for a Principal Engineer to join our Space & Airborne Power & Digital Department, supporting our analog mechanism control designs. The applicant will support designs of Circuit Card Assemblies (CCA) and Units that provide power and control for mechanisms and other external devices, with special emphasis on design for manufacturing, assembly, test, and cost.

What You Will Do

• Developing innovative technical solutions to a wide range of complex challenges spanning the entire product lifecycle, including proposal, advanced development, design, manufacturing, integration, and testing of missiles and launchers, support equipment and electronics for military programs.
• Perform mechanical design analyses utilizing engineering fundamentals to ensure form, fit, and function are as intended by design for the use-application.
• Support component level design and test reviews
• Raytheon has a strong culture of mentoring; it is expected that employees will be both mentors and mentees
• Collaboration with both Functional and Program higher level management.
• Collaboration with Customer and Suppliers
• Assignment may require some travel (~25%)
• Assignments may include being a team member or guiding a team through several phases of hardware systems lifecycle such as designs and analysis; architecting new electronic systems; developing and documenting subsystem requirements and test plans; peer reviews of designs as a subject matter expert; presentations to peers, management, and government customers; and root-cause failure investigations

What You Will Learn

• Lead a mechanical engineering team and collaborate with cross-functional teams including other engineering disciplines, operations, supply chain, quality, and external suppliers to resolve technical challenges and develop effective design solutions.
• Independently manage tasks and deliver on schedule, budget, and technical goals.
• Participate in design reviews and conduct trade studies to support informed, sound engineering decisions.
• Mentor and guide less experienced engineers, contributing to team development and technical growth.

Qualifications

• Bachelors Degree in a Science, Technology, Engineering, or Mathematics related field and minimum 8 years prior relevant experience, or An Advanced Degree in a related field and minimum 5 years experience.
• Eight years of experience in one or more of the following areas: Electronics packaging design, integration, and production support.
• Participate in design reviews and conduct trade studies to support informed, sound engineering decisions.
• Mentor and guide less experienced engineers, contributing to team development and technical growth.
• Technical Data Package creation using GD&T (Geometric Dimension and Tolerances).
• change notice processing including communication of required functional and performance requirements.
• Experience using CREO CAD design and documentation tools or similar 3D solid modeling software with a configuration and data management environment.
• Prior experience as a technical leader on a complex subsystem during Engineering, Manufacturing, and Development (EMD) Phase.
• Advanced degree in engineering, mathematics, physics, or related engineering degrees.
• Systems engineering thought process with analytical skills background.
• Highly self-motivated individual that can perform multidiscipline work.
• Able to network and/or influence outside of the Department with other design and production support organizations, program leadership, other engineering disciplines and Manufacturing organizations.
• Interpersonal skills with the ability to interact positively with peers, suppliers, management, and customers in a production environment.
• Proven experience in balancing engineering process discipline and innovation for rapid development and program success.
• Experience working with satellite or similar systems.
• Practical experience in all phases of the product development lifecycle.

What We Offer

• 118,300 USD - 224,900 USD salary range
• 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
• holidays
• annual short-term and/or long-term incentive compensation programs

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.

Optional – Location Info and/or Links: El Segundo, CA: https://careers.rtx.com/global/en/raytheon-el-segundo-ca-location

More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm

The salary range for this role is 118,300 USD - 224,900 USD.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted.

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.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.