Senior Mechanical Engineer

Prattwhitney; Fullerton (CA); On-site; USD 96,000 - 182,000; Full time

Benefits offered by this job

medical

dental

vision

401(k) match

paid time off

Job summary

RTX in Fullerton, CA is seeking a Senior Mechanical Engineer to support the Sentinel radar product line. The role is onsite and involves developing mechanical subsystems and coordinating cross‑functional teams for design, production and program execution.

Applicants should have a STEM degree, 7+ years of relevant experience, and an active DoD clearance. Travel to suppliers and facilities, up to 25%, is expected as part of program execution.

Qualifications

• Bachelor’s degree in STEM and 7+ years of relevant experience.
• Active and transferable U.S. government security clearance required.
• Strong CAD, technical writing and oral communication skills.
• Experience leading mechanical engineering projects across radar programs.

Responsibilities

• Develop mechanical subsystems with solid modeling and drawings using CAD tools.
• Coordinate integration across Sentinel portfolio teams for design, production and program execution.
• Serve as technical authority for radar TDP design, development and failure investigations.
• Contribute to Engineering changes, EDS implementation and CCB participation.
• Support program growth and technology insertion with leadership and cross‑functional teams.

Skills

Creo Parametric

SolidWorks

Catia

3D CAD

Technical writing

Oral communication

Team collaboration

Education

Bachelor’s degree in STEM

Advanced degree preferred

Tools

PDM

Job description

Date Posted: 2026-10-13 Country: United States of America Location: US-CA-FULLERTON-675 ~ 1801 Hughes Dr ~ BLDG 675 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required after day 1 At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world‑class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Raytheon brings 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. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. 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. The Tactical Radars department within Raytheon Hardware Engineering supports the development, production, and deployment of multiple defense products including radars, missiles, command and control systems, and naval electronics. The products support US Government and international customers. This Senior Mechanical Engineer will support the Sentinel radar product line based in Fullerton, CA and may require domestic and international travel to suppliers. This position will be an onsite role.

What You Will Do

Working within a team environment to develop innovative mechanical subsystems with solid modeling practices and drawing creation using CAD tools such as Creo Parametric, Solidworks, Catia or equivalent. Use preliminary sketches, diagrams, and other engineering information to generate 3-D design models and/or conceptual designs Experienced with solid modeling practices and drawing creation using CAD tools such as Creo Parametric, Solidworks, or equivalent. Knowledge of fabrication processes, capabilities and limitations Provide transparent identification and communication of issues to functional leadership and engagement for resources (Subject Matter Experts, etc.) to resolve production issues rapidly and efficiently. Coordinates integration efforts across the Cross Product Teams in the Sentinel portfolio to ensure successful system design, integration, production and program execution. Primary technical authority and point of contact for all aspects associated with the radar technical data package (TDP) including design, development, manufacturing, and failure investigation Understanding of and disciplined application of tools / processes / approaches / instructions across the radar product life cycle Key participant in the Engineering changes process, peer review process, Engineering Documentation Standards (EDS) implementation, Configuration Control Board (CCB) participant as required by command media Supports program growth and technology insertion strategies working closely with the program technical leadership, Program Office, Chief Technologists, and Technical Directors. Primary technical interface with top level Integrated Product Team Lead (IPTL) for planning and execution of production programs, lateral product applications, and major Engineering Change Proposals.

Qualifications

You Must Have Bachelor’s degree in science, Technology, Engineering, and Mathematics (STEM) and a minimum of 7 years of prior relevant experience. Advanced degree in a related field may be substituted for additional years of experience. Demonstrated leadership experience as a senior mechanical engineer. Understanding of cost and schedule responsibilities. Experience working proposals. Experience working across multiple product lifecycle stages of a radar production program. Experience working across multiple functional and discipline organizations to successfully resolve technical challenges. Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Position requires a minimum of 25% of travel to suppliers and production facilities which include domestic and international travel. Qualifications We Prefer Advanced degree in mechanical engineering, manufacturing engineering, or hardware system design. Experience working in a factory supporting full-rate production of radar components and assemblies. Experience working with suppliers that manufacture machined parts, panels, and electronics. Experience in manufacturing and tolerancing radar mechanical systems. Experience with ANSI/ASME Y14.5 GD&T (Geometric Dimension and Tolerances). Experience managing technical data packages in PDM. Must possess strong CAD, technical writing and oral communication skills.

Role Type Details

Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. Please consider the following role type definition as you apply for this role. Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. Relocation Offered Based On Eligibility. Please consider the following role type definition as you apply for this role. Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader. Remote: Employees who are working in Remote roles will work primarily offsite (from home). If you live within a reasonable commute of an RTX site with other colleagues you interact with, your manager will discuss whether there is a degree of onsite presence associated with this role. Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee’s personal responsibility.

Compensation

The salary range for this role is 95,500 USD - 181,700 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Benefits

• 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

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.

Equal Opportunity

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.

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Company Summary

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.