Mechanical Engineer I (Onsite)

Date Posted: 2026-06-08 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 Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX. At RTX, the world 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 and Effectors 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 Mechanical Engineer I will support the Sentinel radar product line and sensors based in Fullerton, CA and may require domestic and international travel to suppliers. This position will be an onsite role; Employees who are working in Onsite roles will work primarily onsite. 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, or equivalent Develop preliminary sketches, diagrams, and other engineering information to generate 3-D design models and/or conceptual designs Exposure to solid modeling practices and drawing creation using CAD tools such as Creo Parametric, Solidworks, or equivalent Knowledge of fabrication processes, capabilities and limitations Support Mechanical Engineering solutions on production issues to functional leadership and engagement for resources (Subject Matter Experts, etc.) to resolve production issues rapidly and efficiently Support functional team leads for the integration efforts across the Cross Product Teams in the Sentinel portfolio to ensure successful system design, integration, production and program execution What You Will Learn: Understanding of and disciplined application of tools / processes / approaches / instructions across the radar product life cycle Provide radar technical data package (TDP) support that includes design, development, manufacturing, and failure investigation solutions Participant in the Engineering changes process, peer review process, Engineering Documentation Standards (EDS) implementation, Configuration Control Board (CCB) participant as required by RTX command media Supports program growth and technology insertion strategies working closely with the functional leaders, program technical leadership, and Program Office. Supports Mechanical leads for planning and execution of production programs, lateral product applications, and Engineering Changes. Qualifications You Must Have: Bachelor’s degree in science, Technology, Engineering, and Mathematics (STEM) 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 Demonstrated mechanical engineering design knowledge Exposure to product lifecycle stages of a radar production program Experience resolving technical challenges Position requires a minimum of 25% of travel to suppliers and production facilities which include domestic and international travel. Qualifications We Prefer: Degree in mechanical engineering, manufacturing engineering, or hardware system design. Willing to work in a factory supporting full-rate production of sensors, radar components and assemblies. Willing to work remotely with suppliers that manufacture machined parts, panels, and electronics. Exposure to manufacturing and tolerancing mechanisms. Exposure to ANSI/ASME Y14.5 GD&T (Geometric Dimension and Tolerances). Strong CAD, technical writing and oral communication skills. What We Offer Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation. Learn More & Apply Now! 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. 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. 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 62,900 USD - 119,700 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. 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. 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. Privacy Policy and Terms: Click on this link to read the Policy and Terms 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.