Senior Principal Mechanical Design Engineer

Date Posted : 2025-11-05

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 :

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 :

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 Hardware Engineering 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 CORE principles. ME’s capabilities encompass a broad range of technical disciplines which include engineering, manufacturing, technical services, materials, processes, analysis, test, and documentation.

The Radar Mechanical Design Department leads mechanical design, development, and integration of some of the most innovative land-based and shipboard radars in the world. This includes phased array radar systems, hardware integration, and electronic modules, pedestal and power and cooling systems. The department is comprised of individuals with technical expertise and experience in hardware design, integration, and production support.

Mechanical Engineering is searching for an experienced Senior Principal Design Engineer to work in the Radar Design Department.

This onsite role will be based in Marlborough, MA or Tewksbury, MA.

What You Will Do :

You will be responsible for developing  sound technical solutions to a wide range of complex problems related to the entire product life cycle.

Program support and development from early development through transition to production.

Lead  the mechanical development of radar systems and components that achieve the performance requirements at the system-level.

Provides technical conscience, challenged with making sure the product and process meet appropriate standards and requirements

Ensures balance with risk conditions and constraints while advising leadership.

Visible and accountable for technical decisions.

Frequent technical contact with the customer and senior personnel including requirements, significant technical commitments, IRAD, future technical needs, etc.

You will also be responsible for meeting cost, schedule, quality, and performance requirements for the finished product.

Work with minimal direction or supervision, while exercising considerable latitude in determining the technical objectives of the assignment.

Periodic travel will be required to  support collaboration, and hardware build and test

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 or An Advanced Degree in a related field and minimum 5 years experience.

A minimum of eight years of experience in the design of  mechanical design for military or aerospace or commercial applications.

Experience with innovative mechanical design and trouble shooting skills.

Experience with phase array structures, and / or hardware packaging, and / or array integration for military or mechanical or commercial applications in a collaborative environment.

The ability to obtain and maintain a US security clearance prior to the start date. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer :

Advanced degree in Mechanical, Electrical or Aerospace Engineering

Effective communication with all levels of a program and customer.

Experience with ANSI drawing standards and / or first order or structural analysis techniques.

Experience with CREO(Pro / E) or similar 3D solid modeling software.

Familiarity with the design and manufacturing processes of CCAs, metal housings, sheet metal, or assembly operations.

Strong technical background with high technical aptitude.

Strong leadership skills and project management for strategic decisions.

Must have a working knowledge of Microsoft Office (Word, Excel, PowerPoint).

Very strong verbal and written communications and interpersonal skills when working with team members and customers.

Ability to travel.

RTX Corporation 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 Systems, Pratt & Whitney, and Raytheon. Its 185,000 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, VA.

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value : Trust, Respect, Accountability, Collaboration, and Innovation.

Learn More & Apply Now!

RTX solves some of the toughest challenges in aerospace and defense. That requires expansive thinking and bold 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.

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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