Advanced Programs Principal Mechanical Engineer

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

Benefits offered by this job

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 incentive programs

Job summary

RTX is seeking a Principal Mechanical Engineer for its McKinney, TX location to lead RF hardware design and packaging activities. You will develop mechanical concepts, produce detailed drawings, and ensure GD&T conformity across assemblies.

The role requires extensive experience in electronics packaging for aerospace, strong leadership, and the ability to mentor junior engineers while coordinating with program management.

Qualifications

• ABET-accredited degree required or equivalent.
• Experience in electronics packaging for military/aerospace.
• Strong GD&T and ANSI drawing knowledge.
• Willingness to travel up to 25%.

Responsibilities

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

Skills

Electronics packaging

GD&T

ANSI drawing standards

First order analysis

Mentoring

Leadership

Project management

Communication

Negotiation

Travel readiness

Education

ABET-accredited B.S. in Mechanical Engineering

M.S. in Mechanical Engineering

Tools

CREO

Job description

Date Posted: 2026-09-21 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 freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. 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

Qualifications We Prefer

• 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.

• 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

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

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. 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.

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.

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.