Mechanical Engineer II (Thermal)

Date Posted:

2026-08-14



Country:

United States of America



Location:

US-AZ-TUCSON-9070 ~ 9070 S Rita Rd ~ 9070 BLDG



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:

Active and existing security clearance required on 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.

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.

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 Mechanical Engineering, Aerospace, Engineering Science, Physics, Math, or related (STEM) major obtained by start date.
• Experience in thermal analysis with any of the following tools: FloTHERM, PATRAN, Thermal Desktop/SINDA or ANSYS
• Experience in 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

• Experience with solid modeling CAD tool such as CREO or equivalent  
• Experience in Electronics Cooling and Aerodynamic Heating Analyses 
• Demonstrated 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 

Qualifications We Prefer 

• Strong interpersonal and communication skills; both verbal and written

• Ability to work in teams or independently, flexible, demonstrates initiative.

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

Learn More & Apply Now!

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.

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