Thermal Analyst II (Onsite)

RTX; United States; On-site; USD 69,000 - 131,000; Full time

Benefits offered by this job

Relocation eligibility

Medical insurance

Dental coverage

Vision coverage

401(k) match

Paid time off

Job summary

RTX is seeking a Thermal Analyst II for its Marlborough, MA location. The role involves performing a wide range of thermal analyses—from hand calculations to finite element assessments—throughout product lifecycles, including design, qualification, and production support.

You will plan tests, correlate data, and present findings to customers and peers. The ideal candidate holds a Master’s degree in STEM, has experience with FloTHERM/ANSYS (or equivalent), and can work independently while

Qualifications

• Master's degree in Science, Technology, Engineering or Mathematics (STEM) obtained by start date.
• Experience in thermal analysis with FloTHERM, PATRAN, Thermal Desktop/SINDA or ANSYS or equivalent.
• Experience applying mechanical principles to classical and FE-based thermal analyses; ability to work independently and manage priorities.

Responsibilities

• Perform hand calculations to scope higher detail analysis models.
• Conduct detailed thermal analyses to address program challenges.
• Generate test plans to validate analyses and verify hardware against requirements.
• Analyze test data to validate and correlate models.
• Collaborate with peers on moderately complex problems under cost and schedule constraints.
• Review work for technical accuracy with colleagues.
• Present results to internal, external, and government customers.
• Document work thoroughly and archive for reference.

Skills

Thermal analysis

Finite element methods

Hand calculations

Education

Master's degree in STEM

Tools

FloTHERM

PATRAN

Thermal Desktop/SINDA

ANSYS

Job description

Date Posted:

2026-09-21

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

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX.

What You Will Do

The Thermal Analyst II is 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 analyses 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. The Thermal Analyst II 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.

Key Responsibilities

• 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

Qualifications You Must Have

• Masters degree in Science, Technology, Engineering or Mathematics (STEM) obtained by the start date.
• 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

Qualifications We Prefer

• Experience with solid modeling CAD tool such as CREO or equivalent
• Experience in Electronics Cooling and Aerodynamic Heating Analyses
• Experience presenting to external customers

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.

Relocation Eligibility

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend selected 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 68,900 USD - 131,100 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.