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Confirmed on the employer's own hiring board on Nov 3, 2026. First seen by Alion on Nov 3, 2026. L3Harris Technologies scores A on the Alion truth index.

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L3Harris Technologies is an American defense contractor formed in 2019 by the merger of L3 Technologies and Harris Corporation. It builds tactical radios and military communication systems, electronic warfare and intelligence, surveillance and reconnaissance equipment, space sensors and satellites, night vision devices, and uncrewed surface vessels, and owns the rocket engine maker Aerojet Rocketdyne. Its main customers are the United States Department of Defense and allied governments. The company is headquartered in Melbourne, Florida, United States.

Job Title: Specialist, Aerospace Engineer- Thermal Analysis

Job Code: 47131

Job Location: Huntsville, AL or Sacramento, CA

Job Schedule: 9/80: Employees work 9 out of every 14 days - totaling 80 hours worked - and have every other Friday off

Job Description:

In this role, you will utilize your extensive technical expertise and specialized knowledge in the field of thermal and fluids analysis of solid rocket motor (SRM) components and systems. You will apply your skills to contribute to the development of company objectives and principles, aiming to achieve goals with a focus on solid rocket propulsion. You will employ advanced technical principles, theories, and concepts, to complete CFD and thermal analysis for the SRM systems. You will contribute to the creation of innovative principles, ideas, and analytical methods. You will provide solutions to highly complex technical challenges and sensitive issues that demand a significant degree of ingenuity, creativity, and innovation. The challenges you face will often be unique, and your solutions may set a precedent for future decisions.

Essential Functions:

  • Lead complex projects and work with general oversight.

  • Communicate effectively with internal (program office, chief engineers, etc.) and external customers.

  • Drive the design from conceptual phase through detailed design.

  • Complete and be familiar with hand calculation methods to perform initial sizing and verifications.

  • Perform detailed thermal analysis using proprietary codes based on aerothermal tools such as ACE, gasket, and CMA to provide temperature predictions and ablation assessment of SRM insulators and other hardware components.

  • Execute CFD analysis with commercial codes such as ANSYS Fluent to support thermal analysis and SRM design.

  • Duties include test support for pre and post-test analysis of static fired motors for model validation.

  • Provide rocket motor test instrumentation definition and data processing for production, bench, full engine qualification, etc.

  • Ability to obtain a US secret security clearance.

  • Travel: 10%.

Qualifications:

  • Bachelor’s Degree and minimum 4 years of prior thermal design experience. Graduate Degree and a minimum of 2 years of prior thermal design experience. In lieu of a degree, minimum of 8 years of prior thermal design experience.

Preferred Additional Skills:

  • Bachelor of Science in Aerospace or Mechanical Engineering is preferred.

  • Active US secret security clearance is desired.

  • Strong skills in the application and use of heat transfer and fluid dynamics applied to propulsion systems.

  • Understanding of the function and design of solid rocket motors.

  • Experience coding Fortran as well as scripting with Python or Matlab.

  • Strong skills in the application and use of heat transfer and fluid dynamics applied to propulsion systems.

  • Understanding of the function and design of solid rocket motors is a plus.

  • Hands on experience with the manufacturing of solid rocket motors is a plus.

  • Software skills: CEA, CMA, Thermal Desktop, Fluent, CFD++ is desired.
  • Ability to parse large amounts of data for analysis.

In compliance with pay transparency requirements, the salary range for California, salary range for this role is $88,500 $164,500. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

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