Principal Mechanical Design Engineer

Prattwhitney; McKinney (TX); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Parental leave

Flexible work schedules

Educational assistance

401(k) match

Paid time off

Holidays

Relocation assistance

Long-term disability

Job summary

RTX seeks a Mechanical Engineer to join the Airborne & Ground Optics team in McKinney, TX. Responsibilities include full mechanical design from concept to model/drawing, interfacing with chief engineers, and possibly assembling hardware in a lab.

The role emphasizes hands-on work in a fast-paced environment and onsite presence in McKinney. The candidate should have a STEM degree with extensive electromechanical design experience, 3D modeling proficiency, and strong communication skills.

Qualifications

• Typically requires a STEM degree and 8+ years of experience or an advanced degree with 5+ years of experience.
• Experience in design and prototyping of electromechanical systems.
• Experience with 3D modeling software (CREO, SolidWorks, or equivalent).

Responsibilities

• Use CREO modeling and PDM for design and documentation.
• Support design and drawing release processes, including documentation.
• Perform engineering analysis and present designs when needed.
• Collaborate with Chief Engineers and product engineers to ensure manufacturability.

Skills

Electromechanical design

Tolerance analysis

Technical communication

Lab work

Education

Bachelor's degree in STEM

Advanced degree in related field

Tools

CREO

SolidWorks

PDM

Adobe

MS Office

Job description

Date Posted: 2026-09-30 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

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 freedom and deter aggression, creating a safer, more secure world.

Join us and help shape the future of aerospace and defense. We have an exciting opportunity for a Mechanical Engineer to join our Airborne & Ground Optics Department in McKinney, Texas. The responsibilities will include all aspects of the mechanical design process from concept to model/drawing completion for mechanical components required to support product builds working under the general supervision of a team lead. Some assembly of your designs may be required. You will work closely with Chief Engineers, Lead Engineers and product engineers. We are specifically seeking candidates who are hands-on, adaptable in a fast-paced environment, proactive, take ownership of work, communicate well with others, and enjoy solving unique problems every day. This position is an onsite role working in our facility in McKinney, Texas.

What You Will Do

• Utilization of RTX tools including CREO modeling software and Product Data Management (PDM).
• Design and documentation support utilizing engineering tools, Adobe, and MS office suite.
• Execution of engineering change and drawing release process.
• Analytical and technical engineering work within a program environment with possible presentations on designs as needed.
• Training with Raytheon processes and procedures.
• Work may include participation in building hardware in a lab environment.

Qualifications

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or an advanced degree in a related field and minimum 5 years’ experience.
• Experience in the design and prototyping of electromechanical systems.
• Experience with 3D modeling software (CREO, SolidWorks, or equivalent).
• Interpret engineering drawings, including knowledge, and understanding of tolerancing.
• Experience developing and delivering presentations (verbal and/or written).

What We Offer

A total rewards package that goes above and beyond with compensation; healthcare, wellness, and work/life benefits; career development and recognition programs.

• parental (including paternal) leave
• flexible work schedules
• achievement awards
• educational assistance
• child/adult backup care
• medical
• dental
• vision
• life insurance
• short-term disability
• long-term disability
• 401(k) match
• flexible spending accounts
• employee assistance program
• Employee Scholar Program
• parental leave
• paid time off
• holidays

Relocation assistance available.

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, Innovation, and Safety.

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 onsite work in McKinney, TX: North Texas: https://careers.rtx.com/global/en/raytheon-north-texas-location

The salary range for this role is 107,500 USD - 204,500 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.

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.