Principal Materials and Process Engineer (Onsite)

Prattwhitney; California (MO); On-site; USD 118,300 - 224,900; Full time

Benefits offered by this job

Relocation eligible

Job summary

Collins Aerospace is seeking a Principal Materials & Processes Engineer to provide support in composites, structural adhesives, and other organic materials used in nacelle applications.

In this role, you will lead the development, approval, and continuous improvement of materials and process specifications, serve as a primary M&P technical authority to program design teams, and resolve complex issues raised by Operations and suppliers.

Qualifications

• Typically requires STEM degree and 8+ years experience, or an advanced degree with 5+ years.
• Experience independently leading complex engineering tasks and customer-facing activities.
• Technical writing skills (specifications and reports).

Responsibilities

• Develop and lead technical solutions for complex engineering problems with strategic direction.
• Guide material catalog strategy and approve special process qualifications.
• Lead and mentor engineers, review engineering documents and reports.
• Travel up to 20% domestically and internationally.

Skills

Leadership

Technical writing

Customer-facing

Education

STEM degree

Advanced degree in related field

Tools

SAP

Teamcenter

Job description

Date Posted: 2026-07-27 Country: United States of America Location: US-CA-RIVERSIDE-8200B1 ~ 8200 Arlington Ave ~ BLDG B1 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: This job requires a U.S. Person. A U.S. Person is a lawful permanent resident as defined in 8 U.S.C. 1101(a)(20) or who is a protected individual as defined by 8 U.S.C. 1324b(a)(3). U.S. citizens, U.S. nationals, U.S. permanent residents, or individuals granted refugee or asylee status in the U.S. are considered U.S. persons. For a complete definition of “U.S. Person” go here. https://www.ecfr.gov/current/title-22/chapter-I/subchapter-M/part-120/subpart-C/section-120.62 Security Clearance Type: None/Not Required Security Clearance Status: Not Required 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.

Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

Collins Aerospace is seeking a Principal Materials & Processes Engineer to provide support in composites, structural adhesives, and other organic materials used in nacelle applications. In this role, you will lead the development, approval, and continuous improvement of materials and process specifications, serve as a primary M&P technical authority to program design teams, and resolve complex issues raised by Operations and suppliers. You will guide material catalog strategy, oversee and approve special process supplier qualifications, and influence cross-functional decisions through advanced problem-solving, mentorship, and strategic technical direction.

What You Will Do:

• Develop technical solutions to complex problems requiring ingenuity and creativity, exercising latitude in technical decision-making.
• Apply extensive technical expertise and detailed knowledge of related disciplines; guide the successful completion of major program engineering efforts.
• Create, maintain, and approve materials and process specifications involving composites, adhesives, prepregs, and aerospace materials.
• Lead complex investigations of process failures and quality issues; drive real-time root cause resolution.
• Develop and use analysis methods to establish qualifications, certification, and acceptance material property values.
• Ensure compliance with Collins M&P specifications, test methods, regulatory requirements, and customer requirements.
• Serve as the prime technical contact; engage senior personnel on significant technical matters.
• Lead and approve special-process supplier qualifications, audits, and supplier capability development.
• Lead technical teams and mentor engineers across the organization.
• Review and approve engineering documents, specifications, reports, and material notes prepared by others.
• Travel up to 20% domestically and internationally.

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience.
• Experience independently leading complex engineering tasks and customer-facing activities.
• Technical writing skills (specifications and reports).

Qualifications We Prefer:

• Breadth of experience across multiple aerospace programs or products.
• Experience with SAP and Teamcenter.
• Background in ACE, Lean, or Six Sigma.
• Strong interpersonal skills and ability to communicate highly complex concepts.

What We Offer:

• Benefits: Some of our competitive benefits package includes: Medical, dental, and vision insurance Three weeks of vacation for newly hired employees Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option Tuition reimbursement program Student Loan Repayment Program Life insurance and disability coverage Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance,critical illnessinsurance, group legal, ID theft protection Birth, adoption, parental leave benefits Ovia Health, fertility, and family planning Adoption Assistance Autism Benefit Employee Assistance Plan, including up to 10 free counseling sessions Healthy You Incentives, wellness rewards program Doctor on Demand, virtual doctor visits Bright Horizons, child and elder care services Teladoc Medical Experts, second opinion programAnd more!

This role may be eligible for relocation.

The salary range for this role is 118,300 USD - 224,900 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.