Mechanical Thermal Engineer II (Onsite)

Raytheon; Tucson (AZ); On-site; USD 69,000 - 131,000; Full time

Benefits offered by this job

Relocation Eligibility

Job summary

Raytheon in Tucson, AZ is seeking a Mechanical Thermal Engineer to join the MA&T Department to perform detailed thermal analyses across product lifecycles. You will conduct hand calculations, develop test plans, and present results to customers, ensuring cost and schedule alignment.

Requires a Master’s degree and active DoD Secret clearance eligibility; relocation may be offered. This U.S.-based role emphasizes rigorous analysis, peer reviews, and hands-on testing support.

Qualifications

• Master’s degree in STEM major obtained by start date.
• Experience in thermal analysis with FloTHERM, PATRAN, Thermal Desktop/SINDA or ANSYS.
• Strong understanding of mechanical principles to solve classical thermal analysis solutions.

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

Thermal analysis

Hand calculations

Modeling concepts

Education

Master’s degree in STEM (start date)

Master’s degree in Mechanical/Aerospace Engineering (preferred)

Tools

FloTHERM

PATRAN

Thermal Desktop/SINDA

ANSYS

CREO

Job description

Date Posted: 2026-09-21

Country: United States of America

Location: US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. 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: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

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.

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.

Raytheon is seeking a Mechanical Thermal Engineer to join the MA&T Department. The Mechanical Thermal Engineer 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 Mechanical 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

Qualifications You Must Have

• Master’s degree in Science, Technology, Engineering or Mathematics (STEM) major obtained by 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
• Experience may be obtained through on-the-job experience, research, coursework, or projects.

Qualifications We Prefer

• Master’s degree in Mechanical Engineering or Aerospace Engineering (STEM) major obtained by start date.
• Experience with solid modeling CAD tool such as CREO
• Experience in Electronics Cooling and Aerodynamic Heating Analyses
• Experience in thermal testing: Planning, organization, execution, data reduction and correlation
• Experience presenting to external customers
• Ability to travel to government and other facilities in support of program activities

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

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.