Thermal Analyst II- Marlborough, MA

RTX (Raytheon); Sudbury (MA); On-site; USD 70,000 - 110,000; Full time

Job summary

RTX in Marlborough, MA is seeking a Thermal Analyst II to join the Mechanical Analysis and Test (MA&T) team onsite. You will apply thermal analysis techniques, generate test plans, and verify hardware against customer requirements.

The role requires a STEM degree with 2 years of relevant experience (or an advanced degree), hands-on experience with FloTHERM, PATRAN, Thermal Desktop/SINDA, or ANSYS, and the ability to obtain a U.S. government clearance.

Qualifications

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM)
• An Advanced Degree in a related field is acceptable
• Experience in thermal analysis and ability to obtain clearance

Responsibilities

• Perform Hand Calculations to determine scope of higher detail analysis models
• Generate test plans required to validate analyses and verify hardware compliance to customer requirements
• Analyze test data to validate and correlate models
• Review your work with peers to ensure technical accuracy
• Present results to internal, external, and government customers
• Generate detailed documentation of work and archive for reference

Skills

Independent work

Multitasking

Team collaboration

Education

STEM degree

Advanced degree in related field

Tools

FloTHERM

PATRAN

Thermal Desktop/SINDA

ANSYS

Job description

Date Posted: 2026-10-26

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

About RTX

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

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.

Thermal Analyst II Position

The Thermal Analyst II position is located in Marlborough, MA, and the role is onsite.

Responsibilities

• Perform Hand Calculations to determine scope of higher detail analysis models
• Generate test plans required to validate analyses and verify hardware compliance to customer requirements
• Analyze test data to validate and correlate models
• Review your work with peers to ensure technical accuracy
• 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 or an Advanced Degree in a related field and 0 years' experience
• Experience in thermal analysis with any of the following tools: FloTHERM, PATRAN, Thermal Desktop/SINDA or ANSYS or equivalent
• Experience in mechanical principles to solve classical thermal analysis solutions both inside and outside of finite element tools and an ability to work independently and manage multiple priorities
• Ability to obtain a U.S. government issued security clearance. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance, Clearance must be active and transferable prior to start date
• Ability to work in a collaborative, team-based environment and independently

Qualifications We Prefer

• Degree in Mechanical or Aerospace Engineering
• 5+ years of professional experience in the thermal analysis of complex systems that require collaboration across multiple engineering disciplines
• Experience with solid modeling CAD tools such as CREO or equivalent
• Experience in Electronics Cooling and Aerodynamic Heating Analyses
• Ability to travel to government and other facilities in support of program activities

What We Offer

Whether you're just starting out on your career journey or are an experienced professional, we offer a robust total rewards package that goes above and beyond with