Senior Mechanical Cooling Engineer

globalhr; Marlborough (MA); On-site; USD 110,000 - 165,000; Full time

Job summary

RTX, the world's largest aerospace and defense company, has an onsite opportunity in Marlborough, MA. The role supports hardware engineering within the HWE organization and requires the ability to obtain and maintain a U.S.

government security clearance. Ideal candidates will contribute to mechanical-electrical hardware design, development, and production for critical defense systems, using state-of-the-art tools and processes.

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

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.

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