Entry Level Thermal Engineer Jobs in Arizona (NOW HIRING)

Date Posted: 2026-09-02

Country: United States of America

Location: US-AZ-TUCSON-M02 ~ 1151 E Hermans Rd ~ BLDG M02

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.

At Raytheon, the Effector RF Design Department is seeking talented engineers with the skills and passion to work on complex projects that shape antenna, radome, and antenna measurement system technology within the company. The selected candidate will be contributing to varied teams and executing tasks in various antenna and radome design life cycles. This is an entry-level antenna engineer position for an individual with educational experience and/or professional interest in the application of technical antenna principles, concepts, and techniques. A successful candidate is one with the skillset and passion required to solve complex engineering problems, properly apply engineering tools and processes, and leverage knowledge from previous coursework and projects. All Candidates will work within a larger team at Raytheon. Candidates perform meaningful engineering tasks for their assigned projects and will also have access to a variety of career development opportunities. These include access to technical mentors and the ability to shadow experienced professionals in order to learn about real industry positions.

• Development of antenna or radome hardware and requirements.


• Working with interdisciplinary engineering teams including thermal, structural, mechanical, systems, etc.


• Working with antenna manufacturing suppliers.


• Antenna modeling and simulation execution on workstations and high performance computing resources (HPC) Interpret simulation or measurement test data to verify performance to requirements.

• Master’s degree in Electrical Engineering or Computer Engineering or related Science, Technology, Engineering, or Mathematics (STEM) major obtained by start date.


• Experience and/or coursework with RF and electromagnetic theory


• Proficiency with modeling & simulation tools such as HFSS, CST, FEKO, SENTRi and/or GRASP.

• Model generation and simulation experience with conformal antennas (to include experience or relevant course work).


• Proficiency with Python, MATLAB and/or other high level scientific programming languages


• Proficiency with high performance computing (HPC) environments and schedulers such as SLURM


• Demonstrated ability to work with colleagues who represent a variety of work and conflict resolution styles.

• 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


• 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.

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.

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.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.

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