Senior Thermal Design Engineer

Date Posted:

2026-04-09

Country:

United States of America

Location:

US-CA-GOLETA-B03 ~ 75 Coromar Dr ~ BLDG B03

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

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 freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Raytheon is seeking a Senior Thermal Design Engineer to 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 engineer will cover a wide range of difficult problems, requiring solutions that are imaginative, thorough, practicable, and consistent with organization objectives. The tasks will span the spectrum from classical hand analyses to detailed analyses requiring the use of finite element analysis software. 

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.
• Present their work for peer reviews for technical accuracy and to be peer reviewers for other engineers’ work.
• Present results to internal, external, and government customers.
• Generate detailed documentation of work and archive for reference.
• Develop an analysis plan that aligns with the program milestones and supports technical excellence.

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.
• Experience in thermal analysis i.e. (FloTHERM, PATRAN, Thermal Desktop/SINDA, ANSYS or equivalent).
• Experience presenting to external customers.
• 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

• Advanced degree in Mechanical or Aerospace Engineering.
• Technical competence with thermodynamic principles.
• 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.
• Experience in circuit card electronics analyses.
• Experience leading a small team of engineers.
• Experience managing scope, budget, and deliverables for team’s tasking.
• Experience with solid modeling CAD tool such as CREO or equivalent.
• 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: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.
• Whether you’re just starting out on your career journey or are an experienced professional, we offer a robust total rewards package with compensation; healthcare, wellness, retirement and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules (9/80), achievement awards, educational assistance and child/adult backup care.
• Relocation assistance available!

Learn More & Apply Now!

• Please consider the following role type definition as you apply for this role.
• 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.
• This position requires onsite work in Goleta, CA: Welcome to Raytheon in Goleta, CA

This position requires security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm

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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 95,500 USD - 181,700 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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