Senior Principal Reliability Engineer

Date Posted: 2026-07-16 Country: United States of America Location: US-AZ-TUCSON-801 ~ 1151 E Hermans Rd ~ BLDG 801 (External Site) Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. 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: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date 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. Lifecycle Engineering (LCE) is responsible for ensuring our products are Safe, Reliable, Maintainable and delivered on time. Life Cycle Engineering consists of multiple disciplines that support engineering, our program offices and our customers. Our Life Cycle Engineering disciplines participate in the total life cycle of our products from conception to deactivation. Our focus area is product support, including the following engineering disciplines: Reliability, System Safety and Supportability. The Senior Principal Reliability Engineer will develop and implement Reliability engineering strategy and lead a Reliability engineering team supporting development, production and sustainment product phases. This includes developing reliability requirements, analyses, and test methodology. The Senior Principal Reliability Engineer will be expected to have deep knowledge and experience with a variety of reliability engineering sub-disciplines including Failure Modes Effects Criticality Analysis (FMECA), Environmental Stress Screening (ESS) process optimization, Reliability Predications, Derating Analysis and overseeing Failure Reporting and Corrective Action (FRACAS) practitioners. In the course of their job responsibilities, the Senior Principal Reliability Engineer will interface closely with program and functional leadership, as well as customers, and oversee reliability engineers of varying experience levels, including mentoring and coaching. We are looking for a Senior Principal Reliability Engineer to join our team located in Tucson, AZ. What You Will Do: * Develop and implement reliability strategy across multiple product phases including development, production and sustainment. * Lead and oversee an engineering team consisting of varying levels of experience and engineering sub-disciplines. * Lead analysis efforts supporting system design with respect to product Reliability, Maintainability, and Failure Analysis/Reporting. * Serve as a Subject Matter Expert (SME) in reliability disciplines including FMECA, Predictions, Derating and ESS Optimization. * Identify gaps in expertise, coach other Reliability engineers and work with functional leadership in identifying and implementing Reliability engineering development. * Review technical documentation for accuracy and compliance with existing standards. Qualifications You Must Have: * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience. * Experience with Failure Modes Effects Criticality Analysis (FMECA), Reliability Predictions, (Environmental Stress Screening) ESS, Derating, and/or Failure reporting, analysis or corrective actions system (FRACAS) * Ability to obtain Interim Secret U.S. government issued security clearance is required prior to start date. Qualifications We Prefer:

• Experience leading engineering teams.
• Customer focus and collaboration skills.
• Excellent written and oral communication skills; knowledge of MS Office

tools, and Experience in the preparation and presentation of briefing material. * Ability to review technical documentation for accuracy and compliance with existing standards with the ability to identify concerns, suggest solutions, and follow through to closure. What We Offer: * Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation. Please consider the following role type definition as you apply for this role. * 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. * Clearance Information: This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: [ * Tucson, AZ: [ 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. The salary range for this role is 132,400 USD - 251,600 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. Privacy Policy and Terms: Click on this link [ to read the Policy and Terms