Principal Mechanical Engineering Lead

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

Benefits offered by this job

Relocation assistance

Competitive benefits

Job summary

RTX in McKinney, Texas is seeking a Principal Mechanical Engineer to lead RF hardware design for Advanced Programs onsite. You will design tight-tolerance RF components, manage drawings, and ensure GD&T and ANSI standards are applied across assemblies, working with program and design teams to meet cost, schedule, and performance goals.

The role requires a B.S. in Mechanical Engineering (ABET) with 10+ years in electronics packaging for aerospace or military applications, strong GD&T knowledge,

Qualifications

• ABET-accredited B.S. in Mechanical Engineering
• 10+ years in electronics packaging for military/aerospace
• Strong GD&T knowledge and ANSI drawing standards

Responsibilities

• Design tightly toleranced RF components
• Create, refine, and release detailed drawings
• Apply GD&T to detail manufacturing standards for RF components and assemblies

Skills

GD&T proficiency

Leadership

Mentor junior engineers

Security clearance eligibility

Education

B.S. in Mechanical Engineering (ABET)

M.S. in Mechanical Engineering (ABET)

Tools

CREO

Geometric Dimensioning & Tolerancing software

Job description

Job Information

Date Posted: 2026-11-02 Country: United States of America Location: US-TX-MCKINNEY-513WD ~ 2501 W University Dr ~ WING D BLDG Position Role Type: Unspecified 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

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

Company Overview

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 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.

Job Summary

Raytheon’s Airborne Sensor RF Design Department is seeking a Principal Mechanical Engineer to work on Advanced Programs onsite at our McKinney, Texas location. The candidate will perform mechanical design, test, integration and documentation tasks for RF (Radio Frequency) systems and sub-systems, including antennas, radomes, sensors, waveguides and supporting electronics. The candidate will be responsible for leadership in the areas of mechanical design, requirements development, design concept development and trade studies in addition to detailed hardware design and documentation. The candidate is expected to follow established procedures and instructions while working closely with program and functional leadership to ensure that overall design goals are met. The candidate is expected to have extensive experience in the use of solid-modeling CAD software and have multi-year experience in electronics packaging. The candidate is also expected to be experienced in the use of Geometric Dimensioning and Tolerancing (GD&T) for design documentation and fabrication. The candidate will be responsible for developing technical solutions to a wide range of complex problems. The candidate will be responsible for supervising the definitions of mechanical outline and construction details, connector selection and specification, generating mechanical and assembly drawings, and overseeing electrical layout and the technical data package. Familiarity with ANSI drawing standards is required. The candidate will also be responsible for meeting cost, schedule, quality, and performance requirements for the finished product. The candidate will work with minimal direction or supervision, while exercising latitude in choosing the technical objectives of the assignment. The position will require frequent interaction with program management and external personnel, as well as the mentoring of early-career engineers. Periodic travel, up to 25%, may be required as needed.

What You Will Do

• Design tightly toleranced RF components
• Create, refine, and release detailed drawings
• Apply knowledge of Geometric Dimensioning & Tolerancing to detail manufacturing standards for RF components and assemblies

Qualifications You Must Have

• B.S. in Mechanical Engineering or a related field, from an ABET-accredited university
• 10+ years of experience in the design and manufacturing of electronics packaging for military and aerospace applications
• Thorough knowledge of GD&T, ANSI drawing standards and first order analysis techniques
• Ability to travel periodically to suppliers, manufacturing facilities and customer sites to support programs (up to 25%)
• Ability to apply basic principles, theories, and concepts within the mechanical engineering field
• Deep desire to mentor earlier career engineers
• U.S. Citizenship is required, as this position requires an active U.S. Security Clearance

Preferred Qualifications

• M.S. in Mechanical Engineering or a related field, from an ABET accredited university
• 12+ years of industry experience in the design and manufacturing of electronics packaging for military and aerospace applications
• Solid modeling experience, using CREO
• Experience with testing of electronics to military environments (MIL-STD-810)
• Excellent leadership skills and project management skills
• Demonstrated presentation and communication skills
• Experience negotiating with internal and/or external suppliers
• Experience leading proposals and supporting new business development

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.

This position offers relocation based on candidate eligibility.

Salary

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.

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, 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.

Location and Travel

This role is a U.S.-based role. The position is located at McKinney, Texas, United States. Periodic travel, up to 25%, may be required as needed.

Application Window

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.

Equal Employment 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.