Thermal Analyst II (Onsite)

Raytheon; Marlborough (MA); On-site; USD 69,000 - 131,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Life insurance

Disability insurance

401(k) match

Flexible schedules

Employee Scholar Program

Job summary

RTX is seeking a Thermal Analyst II in Marlborough, MA to perform thermal analyses across product lifecycles using hand calculations and FE tools. The role requires the ability to present results to customers and to plan tests, with security clearance responsibilities tied to program work.

The candidate will work onsite, contribute to cross-disciplinary teams, and leverage FloTHERM/ANSYS/PATRAN tools to ensure thermal integrity of aerospace/defense hardware.

Qualifications

• Masters degree in STEM obtained by the start date.
• Experience in thermal analysis with FloTHERM, PATRAN, Thermal Desktop/SINDA or ANSYS.
• Ability to work independently and manage multiple priorities.

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.

Skills

Independent work

Time management

Presentation of results

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. gov-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

Please consider the following role type definition as you apply for this role.

• Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

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