Senior Thermal Engineer

About RTX and Raytheon

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose to solve the world's most complex problems. With three market-leading businesses and world-class operations, we push the boundaries of known science to connect and protect our world.

Raytheon brings over 100 years of experience and renowned engineering expertise to meet today's mission needs and stay ahead of tomorrow's threats. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world.

About the Team

The Mechanical Analysis and Test (MA&T) Department ensures structural and thermal design robustness across the Raytheon portfolio. From preliminary concepts to fielded weapon system support, the team delivers innovative engineering solutions. We utilize methods ranging from classical fundamental techniques to state-of-the-art finite element methods, all validated by tests that ensure cost-effective yet technically balanced outcomes.

About the Role

The MA&T Center in El Segundo, CA, is seeking a mid-level Senior Thermal Engineer to join our team. In this role, you will drive detailed thermal analysis on products throughout their entire lifecycle, from initial design trade studies and proposals through qualification testing to enduring production support.

You will tackle difficult problems requiring imaginative, thorough, and practicable solutions consistent with organizational objectives. Your work will span the spectrum from classical hand analyses to detailed simulations using finite element analysis software. As a Senior Thermal Engineer, you are expected to demonstrate high technical competence in thermodynamic principles and manage your work within agreed-upon cost and schedule constraints.

Beyond technical execution, you will play a key role in our culture of excellence by presenting your work for peer reviews and serving as a reviewer for other engineers. You will also plan and support tests, perform data reduction, and engage in thermal model correlation. This position offers the opportunity to act as a technical leader, helping to define and refine departmental processes and tools, or to lead analysis and test teams.

Hiring Process and Application

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.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted, though business necessity may require adjustments to this timeline.

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, or veteran status. 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.