Raytheon Technologies

Senior Mechanical Cooling Engineer

Raytheon Technologies$86K — $165K *
Aerospace & Defense
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Degree in STEM with 5+ years of experience or an advanced degree with 3+ years of experience
  • Experience in Thermodynamics, Fluid Mechanics, and/or Heat Transfer
  • Project experience with liquid or air cooling systems
  • Familiarity with solid modeling tools like Pro/Engineer, Solidworks, or AutoCAD

Responsibilities

  • Collaborate with customers to define cooling system requirements
  • Design, analyze, and document cooling hardware and systems
  • Select components like pumps and heat exchangers
  • Generate, release, and incorporate changes into drawings
  • Resolve manufacturing and supplier change requests
  • Ensure product and process compliance with standards and requirements
  • Support integration of products at factories and suppliers domestically and internationally

Benefits

  • Comprehensive total rewards package including healthcare and wellness benefits
  • Parental leave and flexible work schedules
  • Career development and recognition programs
  • Relocation assistance available
Full 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

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

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

This position is in Marlborough, MA. (On-site)

What You Will Do
  • Working collaboratively with our customers to establish cooling systems requirements
  • Mechanical design, analysis, and documentation of cooling hardware and system
  • Selection of components including pumps and heat exchangers
  • Drawing generation, drawing release, and drawing change incorporation
  • Resolution of change requests from manufacturing or suppliers
  • Provide technical conscience, challenged with making sure the product and process meet appropriate standards and requirements.
  • Factory and supplier support of product integration domestically and internationally
  • Willingness to travel to domestic Raytheon sites, suppliers, and government facilities.
  • Willingness for international travel to Middle East, Asia, and Europe to foreign sites, suppliers, and facilities.


Qualifications You Must Have
  • Typically requires a degree in Science, Technology, Engineering, and Mathematics (STEM) and a minimum of 5 years of prior relevant experience or an advanced degree in a related field and minimum 3 years' experience.
  • Experience in the fields of 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 tool.


Qualifications We Prefer
  • An advanced degree in Science, Technology, Engineering, and Mathematics (STEM).
  • Experienced in the application of ANSI 14.5M - 1994 (1982), Geometric Dimension & Tolerance.
  • Proficiency in Product Data Management (PDM) or equivalent configuration/data management software
  • Collaborate with other engineering disciplines, non-technical disciplines, and suppliers to resolve technical issues.
  • Experience with Microsoft Office applications including MS Word, Excel, and PowerPoint


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. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.
  • 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, Innovation, and Safety.
  • Relocation assistance available.

Learn More & Apply Now!
  • 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.

The salary range for this role is 86,800 USD - 165,200 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.

About Raytheon Technologies

Raytheon Solipsys, a wholly-owned subsidiary of the Raytheon Company, is an industry leader in the development of integrated Command and Control (C2) Network-Centric solutions for the Domestic and International DoD and Homeland Security. Through proven systems and software engineering practices, built on the invention and application of innovative technologies, they deliver the C2 infrastructure necessary to effectively control security/military forces in any environment. Their reliable solutions assure information superiority, increased shared awareness, deep sensor reach, aircraft control, air defense, disaster management, and time-critical decision making.

Raytheon Technologies Careers

Join the innovative world of Raytheon Technologies, a leader in aerospace and defense, where we offer unparalleled job opportunities in an environment that champions diversity, leadership, and professional growth.

Work You’ll Do

At Raytheon Technologies, you’ll be part of a company that values innovation and leadership. Our team is dedicated to solving some of the most complex challenges in aerospace and defense, making significant impacts worldwide. With a culture that fosters diversity and inclusion, you will collaborate with some of the brightest minds in the industry.

Transform Your Career

Step into a role that harnesses your skills and propels your career to new heights. Raytheon Technologies is not just about thinking big but making those big ideas happen. We provide robust career development opportunities that include comprehensive training and development programs, leadership workshops, and continuous learning through our internal platforms.

Innovate and Lead

Join our team of over 60,000 professionals globally, who are not only experts in their fields but are also driven by a passion for innovation and excellence. At Raytheon Technologies, you are positioned at the forefront of the industry, where your work directly contributes to groundbreaking advancements in technology and defense.

Internship and Employment Opportunities

Whether you’re starting your career or looking to advance, Raytheon Technologies offers a range of employment and internship opportunities that can help you achieve your professional goals. Our internships provide a solid foundation of skills and experiences, while our full-time positions offer a path to personal and professional growth within the company.

Benefits and Culture

Our employees enjoy a competitive package of benefits and rewards that reflect their invaluable role in our company. From health and wellness programs to performance bonuses and flexible working conditions, we ensure our team members are well taken care of.

Networking and Professional Development

At Raytheon Technologies, networking and professional development are part of our DNA. We encourage our employees to engage in internal and external networking events, leadership training, and diversity initiatives that enhance their career journey.

Join Our Team

Explore the numerous positions available that match your skills and interests. We are looking for passionate, curious, and solution-driven team players who are ready to take their career to the next level.

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Prepare for Your Future

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SEARCH RAYTHEON TECHNOLOGIES JOBS

Join us in our mission to create a safer future and be a part of a team that values integrity, excellence, and teamwork. At Raytheon Technologies, your career is just the beginning of a lifelong journey of professional and personal growth.
Learn more about Raytheon Technologies
Size
14,771 employees
Market Cap
$32,494
Industry
Founded
1922
NASDAQ

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