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Principal Mechanical Engineer - Thermal Engineer

Job in Tucson, Pima County, Arizona, 85718, USA
Listing for: Raytheon
Full Time position
Listed on 2026-01-10
Job specializations:
  • Engineering
    Systems Engineer, Engineering Design & Technologists, Mechanical Engineer, Aerospace / Aviation / Avionics
Job Description & How to Apply Below

Principal Mechanical Engineer – Thermal Engineer

Posted on  


Location:

Tucson, AZ
• Security Clearance:
DoD Secret

Job Summary

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.

Principal Thermal Engineer responsibilities include 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.

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.
  • Act as a technical leader (help define/refine and/or develop MA&T department technical processes and tools) and/or lead analysis/test teams.
Qualifications You Must Have
  • Bachelor’s degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience; an advanced degree in a related field may be substituted for additional years of experience (Master’s = 2 years, Ph.D. = 5 years).
  • Experience in thermal analysis with any of the following tools:
    FloTHERM, PATRAN, Thermal Desktop/SINDA, ANSYS or equivalent.
  • 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.
  • Demonstrated experience in thermal testing: planning, organization, execution, data reduction and correlation.
  • Demonstrated experience in leading a team of thermal analysts on major program efforts.
  • Ability to obtain a U.S. government–issued security clearance. U.S. citizenship is required; only U.S. citizens are eligible for a security clearance, and clearance must be active and transferable prior to start date.
Qualifications We Prefer
  • Degree in Mechanical Engineering or Aerospace Engineering.
  • 10+ years of professional experience in the thermal analysis of complex systems that require collaboration of multiple engineering disciplines.
  • Experience with solid modeling CAD tool such as CREO or equivalent.
  • Experience in electronics cooling and aerodynamic heating analyses.
  • Demonstrated experience in leading thermal testing: planning, organization, execution, data reduction and correlation.
  • Earned Value Management System knowledge.
  • Experience supporting EACs, BOEs and proposals.
  • Experience presenting to external customers.
  • Ability to travel to government and other facilities in support of program activities.
  • Advanced degree in aforementioned disciplines; ABET preferred accreditation.
What We Offer

Whether you’re just starting out on your career journey or are an experienced professional, we offer a robust total rewards package that goes above and beyond with compensation; healthcare, wellness, retirement and work/life benefits; career development and recognition programs. Some of the superior benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance, and child/adult…

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