Principal Reliability Engineer Onsite

Date Posted: 2026-06-10

Country:

United States of America

Location:

US-MA-MARLBOROUGH-MA1 ~ 1001 Boston Post Rd ~ BLDG 1

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 Systems Engineering and Test Capabilities (SE&TC) Surface Radars & Sensors Center is seeking a Principal Reliability Engineer. As a Principal Reliability, Availability, and Maintainability (RAM) Engineer, you will lead RAM program activities, ensuring our products are safe, reliable, and maintainable while delivered on time. Embedded within the Life Cycle Engineering (LCE) team, you will work across disciplines focused on product support, including Reliability, System Safety, and Supportability, supporting the entire product lifecycle—from conception to deactivation. Your role is pivotal in driving innovation, collaboration, and technical excellence to ensure mission-critical aerospace and defense systems meet the highest standards of performance and reliability.

What You Will Do

• Conducting Reliability, Availability, and Maintainability (RAM) analyses, including reliability predictions and maintainability predictions.
• Performing Failure Modes Effects and Criticality Analyses (FMECA) and Fault Detection/Fault Isolation (FDFI) analyses.
• Defining/allocating RAM requirements.
• Assessing RAM performance: Mean Time Between Failure (MTBF), Mean Time Between Critical Failure (MTBCF) & Operational Availability (Ao).
• Interpreting data and analyzing results.
• Ensuring performance compliance to requirements.
• Maintaining complex Reliability Block Diagrams (RBD) and system models.
• Supporting the proposal process in developing Basis of Estimates (BOEs) for RAM work.
• Tracking Earned Value (EV) and providing accurate status on the schedule and budget for the RAM scope.
• Minimal travel (10%) to local Raytheon sites in Northeast area.
• This job is based at Raytheon’s Marlborough facility and is posted as Onsite.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 8 years of prior relevant experience.
• Experience in Reliability, Failure Analysis, and/or Quality Engineering.

Qualifications We Prefer

• Experience with Reliability Engineering Concepts including knowledge of reliability and maintainability predictions, FMECA/FDFI, RBDs, MTBF/MTBCF, Ao.
• Experience presenting to Failure Review Boards.
• Electrical Engineering experience, Electrical Engineering degree/education preferred.
• Strong analytical skills with the ability to collect, organize, analyze, and disseminate significant amounts of information with attention to detail and accuracy. Ability to present technical material to audiences.
• Ability to work collaboratively across disciplines.

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.

• Relocation Eligible– Relocation assistance available

Learn More & Apply Now!

• 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.

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 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.

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.

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