Senior Simulation Engineer Onsite

Location: US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805

 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 At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.  Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. What You Will Do * Support the design, development, and use of high‑fidelity digital simulation software within advanced technical computing environments. Contribute to trade studies that evaluate weapon system performance across multiple threat types and kill‑chain scenarios. Apply established performance engineering practices and procedures to evaluate a wide range of computational problems, including assessments of potential system improvements, missile effectiveness against single or multiple threats, and identification of countermeasures that may influence effectivity or survivability. Collaborate in a team environment by incorporating input from program leadership, external customers, and technical experts, and develop analytic approaches that generate data required to inform programmatic decisions. Participate in the development and implementation of model‑based solutions that support decision systems, including the validation and testing of models, software components, and integrated system elements. Perform occasional travel to support project needs (typically less than 10%).

You Must Have * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience unless prohibited by local laws/regulations. Experience developing software using C++ in an engineering, research, or production environment. Experience writing, modifying, or maintaining C++ code for technical, scientific, or system‑level applications. Experience developing scripts or applications in Python for analysis, automation, or system integration. Experience using Python to analyze data, model behaviors, or support operational workflows.

We Prefer Advanced degree in Physics, Applied Mathematics, Electrical Engineering, or Aerospace Engineering Experience using AFSIM or other mission analysis simulation tools Experience with campaign analysis simulation tools Experience applying the physics of magnetism in a practical, research, engineering, or laboratory setting. Learn More & Apply Now Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of