Principal Mechanical Engineer

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

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Life insurance

Short-term disability

Long-term disability

401(k) match

Flexible spending accounts

Flexible work schedules

Employee Scholar Program

Parental leave

Paid time off

Holidays

Job summary

RTX in El Segundo, CA, seeks a Principal Engineer to advance space & airborne power and digital systems. You will design circuit card assemblies and units for power/control in missiles and launchers, focusing on manufacturability, assembly, test, and cost.

You will mentor teams, lead design reviews, and collaborate with customers, suppliers, and program management while travel up to ~25% may be required.

Qualifications

• Bachelor's degree in a STEM field with at least 8 years of relevant experience, or an advanced degree with 5+ years.
• Experience in electronics packaging design, integration, and production support.
• Participation in design reviews and trade studies to support informed decisions.
• Mentorship and guidance of less experienced engineers.

Responsibilities

• Develop technical solutions across the product lifecycle for missiles and related electronics.
• Perform mechanical analysis to ensure form, fit, and function.
• Support component design reviews and coordinate with customers and suppliers.
• Lead and mentor engineers, collaborating with cross-functional teams.

Skills

Electronics packaging design

Design reviews

Mentoring engineers

Systems engineering mindset

Interpersonal skills

Satellite systems experience

Multidiscipline collaboration

Education

Bachelor's degree in STEM

Advanced degree in related field

Tools

CREO CAD

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 You Must Have

• 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.

Qualifications We Prefer

• 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.

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. The salary range for this role is 118,300 USD - 224,900 USD. Hired applicants may be eligible for benefits, including but not limited to, 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, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. 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. RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. 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. Privacy Policy and Terms: Click on this link to read the Policy and Terms