(ID: 228) Senior Engineer, Mechanical Engineering - CMC Manufacturing Engineering (Onsite)

RTX; McKinney (TX); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Life insurance

Short-term disability

401(k) match

Flexible schedules

Paid time off

Job summary

RTX in McKinney, TX is seeking a Senior Mechanical Engineer to support factory production operations, collaborating with manufacturing engineering, quality, and operations to improve yields and cycle times.

You will evaluate performance, perform RCCA, and drive process improvements across production lines for systems like ATFLIR, Harpoon, MTS, and EODAS on first shift (8:00 AM–3:00 PM) with possible 9/80 schedule and occasional weekends.

Qualifications

• Bachelor’s degree in STEM with 5+ years of relevant experience; or advanced degree with 3+ years.
• Strong technical aptitude demonstrated through hands-on engineering experience.
• Ability to read and interpret engineering drawings, GD&T, schematics, and assembly documentation.

Responsibilities

• Provide mechanical engineering expertise to troubleshoot assemblies failing inspection or test and implement corrective actions.
• Investigate mechanical failure trends and perform RCCA to mitigate issues.
• Support troubleshooting and repair of mechanical components and systems on RTX programs produced at McKinney.
• Develop and maintain troubleshooting guides, rework instructions, and documentation for production and test processes.
• Drive initiatives to reduce cycle time and improve manufacturability.
• Collaborate with cross-functional partners to resolve design and tolerance challenges.

Skills

Mechanical engineering

Root-cause analysis

GD&T

Engineering drawings

Mechanical troubleshooting

Cross-functional collaboration

Education

STEM degree

Tools

CAD models

CMMs

Job description

Date Posted: 2026-10-28 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. 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.

Seniority and Role Summary

Raytheon is seeking a Senior Mechanical Engineer to support factory production operations. This individual will work closely with cross‑functional partners including manufacturing engineering, factory management, quality engineering, and operations assembly/test personnel. This role resides within the Manufacturing Engineering department. You will evaluate performance and nonconformance data for complex mechanical assemblies, perform mechanical root‑cause analysis, and provide direction for rework, retest, and process improvements. You will collaborate with multiple functions to improve yields, reduce cycle time, enhance test/inspection processes, and support continuous improvement initiatives across production lines. This role is a first‑shift assignment with core hours from 8:00 AM to 3:00 PM, Monday through Friday, with an optional 9/80 schedule. Occasional weekend work may be required to support factory operations.

Key Responsibilities

• Provide mechanical engineering expertise to troubleshoot assemblies failing inspection or test, identifying root causes and implementing corrective actions.
• Investigate mechanical failure trends, perform structured root‑cause and corrective action (RCCA) analysis, and implement preventive measures to mitigate systemic production issues.
• Support troubleshooting and repair of mechanical components, sub‑assemblies, housings, thermal solutions, structures, and mechanical interfaces on systems produced at McKinney CMC such as ATFLIR, Harpoon, MTS, EODAS, and related programs.
• Develop and maintain troubleshooting guides, mechanical rework instructions, tooling concepts, and documentation used to support production and test processes.
• Drive initiatives to reduce cycle time, minimize touch labor, and improve manufacturability to optimize overall production costs.
• Collaborate with cross‑functional partners to resolve technical challenges related to mechanical design, tolerance stack‑ups, materials, assembly processes, or environmental performance.
• Utilize standard mechanical engineering tools—including CAD models, engineering drawings, metrology equipment, and inspection tools—to evaluate, troubleshoot, and disposition mechanical issues.

Required Skills

• A bachelor’s degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 5 years of relevant experience; or an advanced degree with a minimum of 3 years of experience.
• Strong technical aptitude demonstrated through academic performance or hands‑on engineering experience.
• Experience troubleshooting or supporting production of mechanical assemblies, components, or complex electro‑mechanical systems.
• Ability to read and interpret detailed engineering drawings, geometric dimensioning and tolerancing (GD&T), schematics, and assembly documentation.
• Experience with mechanical analysis tools or equipment such as calipers, CMMs, force/torque measurement tools, environmental chambers, or other mechanical diagnostics equipment.
• Ability to obtain and maintain a U.S. government‑issued Secret Security Clearance (U.S. Citizenship required).

Desired Skills

• Experience supporting Electro‑Optical/Infrared (EO/IR), mechanical structures, optics packaging, thermal management, or RF‑related mechanical hardware in a production environment.
• Familiarity with common mechanical components and systems such as bearings, fasteners, heat sinks, seals, flexures, adhesives, and motion mechanisms.
• Experience designing experiments or conducting structured investigations for RCCA activities.
• Proficiency interpreting material specifications, tolerance stacks, mechanical drawings, and component datasheets.
• Strong analytical skills for identifying trends using production and inspection data; ability to recommend process improvements.
• Excellent oral and written communication skills for technical and non‑technical audiences.
• Active Secret Clearance.

Role Classification

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. Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader. Remote: Employees who are working in Remote roles will work primarily offsite (from home). If you live within a reasonable commute of an RTX site with other colleagues you interact with, your manager will discuss whether there is a degree of onsite presence associated with this role. 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.

Qualifications & Experience

Requires advanced knowledge of work area typically obtained through advanced education combined with experience. May have practical knowledge of project management. Practical to substantial knowledge of RTX projects, programs or systems with the ability to make enhancements and leverage in daily work. Typically requires: A University Degree or equivalent experience and minimum 5 years prior relevant experience, or An Advanced Degree in a related field and minimum 3 years experience. Engineering/Other Technical Positions: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations. 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.

Compensation and Benefits

The salary range for this role is 86,800 USD - 165,200 USD. The salary range provided is a good faith estimate representative of all experience levels.

• 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
• 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.

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 Opportunity Employer

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.