Senior Mechanical Cooling Engineer

Position Overview

Senior Cooling Systems Engineer – Marlborough, MA

On‑site role requiring U.S. citizenship and the ability to obtain and maintain a DoD Secret security clearance.

Responsible for designing and supporting fabrication, testing, and installation of custom liquid‑cooled systems for radars and custom air‑cooling of power and communication shelters.

• Collaborate with customers to establish cooling system requirements.
• Perform mechanical design, analysis, and documentation of cooling hardware and systems.
• Select components, including pumps and heat exchangers.
• Generate, release, and incorporate drawing changes.
• Resolve change requests from manufacturing or suppliers.
• Ensure products and processes meet applicable standards and requirements.
• Provide factory and supplier support for product integration domestically and internationally.
• Travel domestically to Raytheon sites, suppliers, and government facilities.
• Travel internationally to the Middle East, Asia, and Europe for foreign sites, suppliers, and facilities.

• Degree in Science, Technology, Engineering, or Mathematics (STEM) with a minimum of 5 years of relevant experience, or an advanced degree with a minimum of 3 years of experience.
• Experience in Thermodynamics, Fluid Mechanics, and/or Heat Transfer.
• Engineering project experience involving cooling systems—liquid or air cooling.
• Experience with solid modeling tools such as Pro/Engineer, Solid Works, AutoCAD, Autodesk Inventor, or similar.

• Advanced STEM degree.
• Experience with 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.

• Total rewards package including compensation, healthcare, wellness, and work/life benefits.
• Career development and recognition programs.
• Parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance, and child/adult backup care.
• Relocation assistance available.
• Salary range: 86,800 USD – 165,200 USD (good‑faith estimate).

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, 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.