Senior Thermal Analyst- Marlborough, MA

RTX; Town of Marlborough (NY); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Relocation Eligible

Benefits package

Job summary

RTX is seeking a Senior Thermal Analyst in Marlborough, MA for onsite work. The role covers mid-level to senior thermal analysis across product lifecycles, from design trade studies to production support.

Candidates will use hand methods and finite element tools, and present results to defense customers. The position requires a STEM degree with 5+ years of experience, proficiency in FloTHERM/ANSYS, and the ability to obtain/hold a DoD Secret clearance.

Qualifications

• Degree in Science, Technology, Engineering or Mathematics (STEM) with 5+ years of relevant experience
• Experience in thermal analysis using FloTHERM, PATRAN, Thermal Desktop/SINDA or ANSYS
• Ability to obtain a U.S. government issued security clearance; U.S. citizenship required
• Demonstrated experience in thermal testing: planning, execution, data reduction and correlation

Responsibilities

• Perform hand calculations to scope higher-detail analyses
• Conduct detailed thermal analyses for program challenges
• Generate test plans to validate analyses and verify hardware
• Analyze test data to validate and correlate models
• Collaborate with peers to ensure technical accuracy under schedule constraints
• Present results to internal and external customers
• Document work thoroughly for reference
• Lead MA&T analysis/test teams or develop department processes

Skills

Thermal analysis

Independent work

Security clearance eligible

Education

STEM degree

Tools

FloTHERM

PATRAN

Thermal Desktop/SINDA

ANSYS

Job description

Date Posted:

2026-08-14

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

As a mid-level career Senior Thermal Analyst you will be responsible for detailed thermal analysis on products throughout their lifecycle from initial design trade studies and proposals through qualification testing to enduring production support.The analysis will cover a wide range of difficult problems, requiring solutions that are imaginative, thorough, practicable, and consistent with organization objectives. The analysis tasks will span the spectrum from classical hand analyses to detailed analyses requiring the use of finite element analysis software.A Thermal Engineer of this salary grade is expected to have a level of technical competence with thermodynamic principles.The Thermal Engineer will be held accountable for completing his/her work within the agreed upon cost and schedule.Additionally, the selected candidate will be expected to present their work for peer reviews and to be a peer reviewer for other engineers’ work.Finally, the engineer is expected to plan and support tests, perform data reduction and engage in thermal model correlation.

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
• Analyze test data to validate and correlate models
• Work with experienced analysts on problems of moderate complexity to provide the answers needed under program cost and schedule constraints
• 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
• Act as a technical leader (help define/refine and/or develop MA&T department technical processes and tools) and/or lead analysis/test teams

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations.
• 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
• Demonstrated experience in thermal testing: Planning, organization, execution, data reduction and correlation

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
• Experience presenting to external customers
• Demonstrated experience in leading a team of thermal analysts on program efforts
• Demonstrated experience in leading thermal testing, including model correlation
• Ability to travel to government and other facilities in support of program activities
• Advanced degree in aforementioned disciplines. ABET is the preferred, although not required, accreditation standard

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 compensation; healthcare, wellness, retirement and work/life benefits; career development and recognition programs. Some of the superior 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: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.
• Relocation Eligible - relocation assistance is available for this position

_ As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect 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.

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 or 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.