Thermal Analyst I- Marlborough, MA
RTX (Raytheon)
- Location
- US-MA-MARLBOROUGH-MA1 ~ 1001 Boston Post Rd ~ BLDG 1
- Work model
- On-Site
- Level
- Mid
- Posted
- Aug 28, 2026
About this role
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 freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. The Mechanical Analysis and Test (MA&T) Department is responsible for ensuring structural and thermal design robustness across the Raytheon portfolio of products. From preliminary concepts to fielded weapon system support, MA&T delivers innovative structural and thermal engineering solutions utilizing methods ranging from classical fundamental & empirically based techniques to state-of-the-art finite element methods leveraging industry leading commercial tools; all complimented and validated by tests executed in a manner to ensure cost effective yet technically balanced solutions. The Thermal Analyst I position is located in Marlborough, MA and the role is onsite. As an entry-level Thermal Engineer in the MA&T Department you will get the opportunity to work on products throughout their lifecycle from initial design trade studies and proposals through qualification testing to enduring production support. Entry level engineers will join and learn from a team of 200+ engineers working in all areas of thermal engineering, and can expect a wide variety of assignments, from classical electronics thermal analyses to cutting edge test definition and execution including field test support at locations around the world. .
What You Will Do
Perform Hand Calculations to determine scope of higher detail analysis models Perform detailed thermal analyses to solve various program thermal challenges Generate test plans required to validate analyses and verify hardware compliance to customer requirements Support test setup and execution, analyze test data, correlate and validate thermal models Work with experienced analysts on problems of moderate complexity to provide the answers needed under program cost and schedule constraints Coordinate and lead technical peer reviews ensuring the technical accuracy of work product Present results to internal, external, and government customers Generate detailed documentation of work and archive for reference Qualifications You Must Have Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 2 years of prior relevant experience Academic or professional experience in thermal design and analysis Academic or professional experience with any of the following tools: FloTHERM, PATRAN, Thermal Desktop/SINDA, ANSYS or equivalent Working knowledge of mechanical principles to solve classical thermal engineering problems both inside and outside of software tools Ability to obtain a U.S. government issued security clearance. U.S. citizenship is required, as only U.S. citizens are