Sr Principal Mechanical Engineer Lead

Date Posted : 2025-10-21

Country :

United States of America

Location :

MA131 : Tewksbury, MA Bldg 1 Assabet 50 Apple Hill Drive Assabet - Building 1, Tewksbury, MA, 01876 USA

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 :

DoD Clearance : Secret

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.

The Raytheon Mechanical Engineering (ME) Organization leads the mechanical hardware design, development and production of radar, sonar, torpedo, and combat system equipment. The ME Team uses state-of the-art tools, processes, technology, and Raytheon’s Six Sigma principles. ME’s capabilities encompass a broad range of technical disciplines which include engineering, manufacturing, technical services, materials, processes, analysis, test, and documentation.

The Air Defense Ground Equipment (ADGE) Department leads mechanical design, development, and integration of platform systems. This includes launcher systems, shelter systems, missile hardware, hardware integration, cable & interconnections, as well as facility development, and site integration. The department is comprised of individuals with technical expertise and experience in hardware design, integration, and production support.

The ADGE department is looking for a full-time Senior Principal Mechanical Engineer to support Patriot GEM-T Missile major components and sub-assemblies, including obsolescence upgrades, procurement and supplier support located in Tewksbury or Andover, MA (onsite)

What You Will Do

Key Responsibilities :

• Lead execution of major programs within the department, including shelter mechanical design, electronic equipment integration, end-item development, vendor coordination, and the integration of power and cooling systems. Support ongoing sustainment of existing product lines.
• Support and lead cross-functional engineering teams, delivering solutions and services across all phases of the program lifecycle. This may include development of next-generation sensing technologies, enhancements to current products, transition to production, in-field upgrades, and vendor oversight.
• Lead and contribute to proposal efforts and Estimate at Completion (EAC) activities, providing strategic and technical input.
• Serve as a Subject Matter Expert (SME) across multiple programs, providing critical and timely support to ensure successful execution and delivery.

Responsibilities include, but are not limited to :

Required Qualifications :

Performing trade studies

Desired Qualifications :

Electronic assemblies including Circuit Cards

Requires expert or mastery level knowledge of work area, typically obtained through advanced education combined with experience.

May have deep knowledge of project management. Advanced knowledge of related disciplines within work area and

ability to identify links and potential impact on projects, programs or systems.

Typically requires :

A University Degree or equivalent experience and minimum 10 years

prior relevant experience, or An Advanced Degree in a related field and minimum 7 years experience Engineering / Other Technical Positions : Typically requires a degree

in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 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.

The salary range for this role is 124,000 USD - 250,000 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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