Senior Mechanical Engineer - Thermal Engineer

Job Description Date Posted: 2026-05-18 Location: Tucson, AZ – 1151 E Hermans Rd, BLDG 805 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. 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 under program cost and schedule constraints Review your work with peers to ensure technical accuracy Present results to internal, external and government customers; travel to government and other facilities as required to support program activities Generate detailed documentation of work and archive for reference Act as 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 Typically requires a STEM degree and a minimum of 5 years of prior relevant experience Thermal analysis experience with tools such as ANSYS, PATRAN, Thermal Desktop/SINDA or equivalent Mechanical principles knowledge to solve classical thermal analyses both inside and outside finite element tools Experience in thermal testing: planning, organization, execution, data reduction and correlation Ability to obtain a U.S. government issued security clearance; U.S. citizenship required; clearance must be active and transferable prior to start date Preferred Qualifications Advanced degree in related field Degree in Mechanical or Aerospace Engineering 8+ years of professional experience in thermal analysis of complex systems requiring collaboration across multiple engineering disciplines Experience with solid modeling CAD tools such as CREO or equivalent Experience in electronics cooling and aerodynamic heating analyses Experience leading a team of thermal analysts on program efforts Experience leading thermal testing, including model correlation Experience presenting to external customers and traveling to government facilities Advanced degree and ABET accreditation preferred Benefits This role offers a total rewards package including competitive salary (USD 86,800-165,200), healthcare, wellness, retirement, and work/life benefits; career development and recognition programs; parental (including paternal) leave, flexible work schedules, educational assistance, and child/adult backup care. Equal Opportunity Employer 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, 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 Section503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. #J-18808-Ljbffr