Principal Simulation Analysis Engineer

RTX (Raytheon); Tucson (AZ); On-site; USD 140,000 - 200,000; Full time

Job summary

RTX (Raytheon) in Tucson, AZ seeks a Principal Simulation Analysis Engineer to join the ISMA center. You will work on high-fidelity missile simulations and decision-support software for warfighter use, in an onsite role.

The team focuses on analyzing threats, developing capabilities, and pushing innovation with purpose-built software in a collaborative environment.

Qualifications

• Typically requires a STEM degree and 8+ years of experience unless prohibited by law.
• Experience with MATLAB or Python.
• Experience in two or more: systems engineering lifecycle, software development, OOD with C/C++/Java.
• AI/ML and HPC experience; ability to obtain/maintain US security clearance.

Responsibilities

• Design, develop, and use high-fidelity digital simulation software in advanced computing environments.
• Lead trade studies to evaluate weapon system performance across kill chain scenarios.
• Apply performance engineering methods to propose system improvements and countermeasures.
• Collaborate with team members to create analytic approaches guiding program decisions.
• Develop, validate, and test model-based solutions for real-time combat decision aids.

Skills

MATLAB

Python

AI/ML

HPC

Systems engineering life cycle

C/C++/Java

Education

STEM degree

Tools

C/C++

Java

Unix/Linux

Job description

Job Description

Date Posted:
2026-09-21

Country:
United States of America

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:
Active and existing security clearance required on day 1

At RTX, the world 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.

The Integrated Solutions, Modeling, and Architecture (ISMA) center assesses, develops, and evaluates solution architectures for our customers' largest, most complex challenges across all the operational domains. In the Operations and Mission Analysis Department you'll be part of a special team that analyzes the world's most challenging threats and helps define new capabilities to counter them, pushing the boundaries of innovation, and leading the industry in operational modeling and simulation using our purpose-built software.

As a team member in the Airborne Kill Chain AI/ML Section, you will join a high-performing team of engineers working with high-fidelity missile simulations to construct decision support systems used by the warfighter.

We are currently recruiting a Principal Simulation Analysis Engineer for an onsite role in Tucson, AZ

What You Will Do

• Support/lead the design, development, and/or utilization of high-fidelity digital simulation software in advanced technical computing environments.
• Support/lead trade studies to assess system performance of weapons against a variety of threats in a variety of kill chain scenarios.
• Contribute your knowledge of performance engineering practices and procedures to evaluate work across a wide range of intriguing computational problems answering questions such as: what should be the next system improvement; what is the effectiveness of the missile against a single or multiple threats; or what counter measures should be considered to increase effectiveness and/or survivability and other operational performance related questions.
• Collaborate with team members and stakeholders to develop and implement analytic approaches that produce data to guide program decisions.
• Support/lead the development, implementation, validation and testing of model-based solutions to power real-time combat decision aids and associated software.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience unless prohibited by local laws/regulations.
• Experience with MATLAB or Python
• Experience in at least two of the following: Systems engineering life cycle
• Software development and/or object-oriented design using C/C++ and/or Java.
• Artificial Intelligence (AI), Machine Learning (ML) and/or Surrogate Modeling
• Computation on high-performance computing (HPC)
• The ability to obtain and maintain a US security clearance prior to the start date. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer

• Specific majors: Physics, Mathematics, Applied Mathematics, Data Science, Operations Research, Systems Engineering, Industrial Engineering, Computer Science, Aerospace Engineering, Computer/Electrical Engineering
• Coursework, internship, projects or work experience in the following areas: Simulation modeling, development, and/or analysis of physical systems
• Knowledge of the systems engineering life-cycle model
• Software development processes and object-oriented design using C/C++ and/or Java in either Unix or Linux computing environments.
• Artificial Intelligence / Machine Learning (AI/ML) or Surrogate Modeling
• Computation on high-performance computing (HPC) grids/clusters, SLURM
• 4 years of relevant professional work experience leading a project team.
• Prior experience in or with military, or substantive domain knowledge of tools and tactics of warfare
• Prior experience with classified material
• Active and transferable U.S. government issued SECRET or TOP SECRET security clearance

Security Clearance 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

DoD Clearance: Secret

Active and existing security clearance required on day 1