Mechanical Engineer I (Onsite)

Date Posted: 2026-07-30 Country: United States of America Location: US-TX-MCKINNEY-513WD ~ 2501 W University Dr ~ WING D BLDG 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'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. What You Will Do The Mechanical Engineer I will join the Airborne Sensor RF Design department supporting mechanical design activities for airborne RF sensor hardware. This role focuses on mechanical packaging, layout, and integration of RF electronics and assemblies. The selected candidate will apply CAD modeling, GD&T, and engineering fundamentals to develop high‑quality mechanical designs within a collaborative multidisciplinary environment. Responsibilities:

• Develop 3D CAD models and detailed mechanical designs using CREO.
• Create engineering drawings, apply correct GD&T, and ensure configuration

accuracy in Windchill. • Support packaging, layout, and integration of electronic and mechanical subassemblies. • Perform tolerance studies and basic structural considerations under guidance from senior engineers. • Participate in hardware builds, design reviews, peer reviews, and product improvements.

• Support failure investigations, root cause analyses, and corrective actions.
• Collaborate with cross-functional teams including EE, systems, manufacturing,

and test engineering. • Document work per program standards. What You Will Learn Opportunities to participate in airborne RF sensor development, mentorship from experienced mechanical engineers, and growth paths across a diverse set of sensor and RF programs. Qualifications You Must Have

• Bachelor’s degree in Mechanical Engineering or related STEM field
• Experience in CAD modeling tools (CREO Parametric preferred).
• Engineering project, internship, research, coursework, or hands-on project

experience. Qualifications We Prefer

• Ability to apply engineering principles to technical problem‑solving.
• Experience with Windchill or other PLM systems.
• Understanding of engineering drawings and GD&T fundamentals per ASME Y14.5.
• Relevant co‑op/internship in mechanical design, defense, or aerospace.
• Exposure to tolerance analysis or mechanical FEA (coursework acceptable).
• Hands-on experience with prototypes, lab hardware, or fabrication tools.
• Strong communication and teamwork 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. * Relocation Eligible Learn More & Apply Now! 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. This position requires the ability to obtain a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: [ 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 57,200 USD - 108,800 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