Principal Mechanical Engineer

Prattwhitney

Sudbury (MA)

On-site

USD 108,000 - 205,000

Full time

3 days ago

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Benefits offered by this job

Parental leave

Flexible work schedules

Achievement awards

Educational assistance

Child/adult backup care

Job summary

RTX is seeking a Principal Mechanical Engineer to lead radar mechanical design efforts for advanced systems. The role involves guiding teams through concept, design, build and test, with emphasis on ruggedized structures, interconnects, and cooling for phased radar arrays.

You will apply GD&T, oversee production transitions, and ensure compliance with military/aerospace standards while coordinating with multiple engineering disciplines.

Qualifications

Degree in STEM with 8+ years of relevant experience or an advanced degree with 5+ years.
Experience in radar architecture or electronics packaging for military/aerospace.
Experience with GD&T and engineering drawing standards.

Responsibilities

Lead mechanical teams across concept through test phases for radar systems.
Develop solutions for ruggedized structures, interconnects, and cooling.
Guide production release and transition-to-production activities.
Ensure product/process meet standards, removing roadblocks when needed.
Collaborate cross-functionally on technical matters and design reviews.
Mentor junior engineers and coordinate with stakeholders.

Skills

Radar mechanical design

GD&T

Leadership

Mechanical engineering

Electromechanical integration

Education

Bachelor's degree in STEM

Advanced degree in Mechanical, Electrical or Aerospace Engineering

Tools

CREO (Pro/E)

ANSI drawing standards

Job description

Job Details

Date Posted: 2026-11-10 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

About RTX

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 freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Role Summary

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, electronic modules, pedestals, and power and cooling systems. The department comprises individuals with technical expertise and experience in hardware design, integration, and production support.

We have an opportunity for an experienced Principal Mechanical Engineer to support our radar development programs. This person will be responsible for leading mechanical teams in all phases of our design cycles, from concept development through design, development, build and test.

Key Responsibilities

Utilize mechanical hardware design experience and knowledge with ruggedized structures, interconnects, electromechanical development, cooling, or array integration of phase array radars/electronics for multiple military programs.
Developing technical solutions to a wide range of complex problems related to the entire product life cycle including proposal, design, manufacture, integration and test of phase array radars/electronics for multiple military programs.
Employing transition-to-production practices with the ability to lead a design release into production.
Providing technical conscience, challenged with making sure the product and process meet appropriate standards and requirements while helping to remove roadblocks.
Working with minimal direction or supervision, while exercising considerable latitude in determining the technical objectives of the assignment while meeting cost, schedule, quality, and performance requirements for the finished product.
Leading a small team of mechanical engineers when required.
Collaborate frequently with cross functional personnel, on significant technical matters often requiring coordination between organizations.

Qualifications

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.
Experience in the design of radar architecture or electronics packaging for military or aerospace or commercial applications.
Experience with GD&T (Geometric Dimensioning & Tolerances).

Preferred Qualifications

Experience with ANSI drawing standards and/or first order or structural analysis techniques.
Experience with design of military standards.
Collaboration and leadership skills.
Experience with CREO (Pro/E) or similar 3D solid modeling software.
Cognizant of machine and designing capabilities or have direct experience in manufacturing and assembly support role for producibility.
Familiarity with the design and manufacturing processes of CCAs, mechanical/RF components, metal housings, structures, and electronics assemblies.
Working knowledge of Microsoft Office (Word, Excel, PowerPoint) Verbal and written communications and interpersonal skills when working with team members and customers.
Advanced degree in Mechanical, Electrical or Aerospace Engineering.

What We Offer

A total rewards package that goes above and beyond with compensation; healthcare, wellness, and work/life benefits; career development and recognition programs.

parental (including paternal) leave
flexible work schedules
achievement awards
educational assistance
child/adult backup care

Values

Trust
Respect
Accountability
Collaboration
Innovation
Safety

Relocation Assistance

Relocation assistance available.

Work Arrangements

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. This position requires 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: https://www.state.gov/m/ds/clearances/c10978.htm #LI-TR1 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.

Salary & Compensation

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.

Benefits

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
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.

Incentive Compensation

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.

Employment Location

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.

Application Window

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.

Equal Opportunity Statement

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.