Senior Mechanical Cooling Engineer

Raytheon; Marlborough (MA); On-site; USD 86,800 - 165,200; Full time

Benefits offered by this job

Competitive total rewards package

Relocation assistance

Flexible work schedules

Parental leave

Educational assistance

Job summary

Raytheon is seeking a Senior Cooling Systems Engineer in Marlborough, MA. The role involves designing cooling systems for harsh military applications, demanding a solid foundation in thermodynamics and fluid mechanics.

With a focus on mechanical design and integration, you'll work collaboratively on key projects while ensuring compliance with engineering standards. The position offers a competitive salary and comprehensive benefits.

Qualifications

• Typically requires a degree in STEM fields and a minimum of 5 years of relevant experience.
• Experience in thermodynamics, fluid mechanics and/or heat transfer.
• Engineering project experience involving cooling systems – liquid cooling or air cooling.

Responsibilities

• Collaborate with customers to establish cooling system requirements.
• Perform mechanical design, analysis, and documentation of cooling hardware and systems.
• Select components such as pumps and heat exchangers.
• Provide technical conscience, ensuring product and process meet appropriate standards.

Skills

Thermodynamics

Fluid Mechanics

Heat Transfer

Solid Modeling Tools (Pro/Engineer, SolidWorks, etc.)

Education

Bachelor's degree in STEM

Tools

Pro/Engineer

SolidWorks

AutoCAD

Autodesk Inventor

Job description

Date Posted: 2026-06-11

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.

RTX is a leading aerospace and defense company, known for its expertise and innovation across its three market-leading businesses. The company focuses on delivering solutions that protect freedom and deter aggression.

The Raytheon Hardware Engineering (HWE) Organization leads the mechanical-electrical hardware design, development and production of critical defense systems. The HWE Team uses state-of-the-art tools, processes, technology, and Raytheon’s CORE principles. HWE’s capabilities encompass a broad range of technical disciplines including 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, including phased array radar systems, electronic modules, pedestals, and power and liquid cooling systems.

Senior Cooling Systems Engineer will support cooling and hydraulic systems used in a variety of harsh environmental military applications. The primary responsibility is to design and support the fabrication, testing and installation of custom liquid-cooled systems for radars, and to support custom air-cooling of power and communication shelters.

What You Will Do

• Collaborate with customers to establish cooling system requirements.
• Perform mechanical design, analysis, and documentation of cooling hardware and systems.
• Select components such as pumps and heat exchangers.
• Generate drawings, release drawings, and incorporate drawing changes.
• Resolve change requests from manufacturing or suppliers.
• Provide technical conscience, ensuring product and process meet appropriate standards and requirements.
• Support factory and supplier integration domestically and internationally.
• Travel to domestic Raytheon sites, suppliers, and government facilities as required.
• Travel internationally to Middle East, Asia, and Europe for foreign sites, suppliers, and facilities as required.

Qualifications You Must Have

• Typically requires a degree in STEM fields and a minimum of 5 years of relevant experience, or an advanced degree and a minimum of 3 years’ experience.
• Experience in thermodynamics, fluid mechanics and/or heat transfer.
• Engineering project experience involving cooling systems – liquid cooling or air cooling.
• Experience in solid modeling tools such as Pro/Engineer, SolidWorks, AutoCAD, Autodesk Inventor, or similar.

Qualifications We Prefer

• Advanced degree in STEM.
• Experience applying ANSI 14.5M – 1994 (1982) Geometric Dimension & Tolerance.
• Proficiency in Product Data Management (PDM) or equivalent configuration/data management software.
• Collaboration with other engineering disciplines, non-technical disciplines, and suppliers to resolve technical issues.
• Experience with Microsoft Office applications including Word, Excel, and PowerPoint.

What We Offer

• Competitive total rewards package including compensation, healthcare, wellness, and work/life benefits. Benefits include parental leave, flexible work schedules, achievement awards, educational assistance, and child/adult backup care.
• Values focused on trust, respect, accountability, collaboration, innovation, and safety.
• Relocation assistance available.

The salary range for this role is 86,800 USD – 165,200 USD. The salary range is a good faith estimate and covers all experience levels.

Hired applicants may be eligible for benefits including 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 may vary by business unit and 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 the position is covered by a collective bargaining agreement. Payments under these programs are not guaranteed.

This is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

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 onsite, hybrid or remote.

Equal Opportunity Employer

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.