2026 Full Time Raytheon ISMA Engineer II– Onsite

Modeling And Simulation (ModSim) Position

At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world.

The ISMA Department supports customer focused mission modeling and simulation activities for all customer areas at Raytheon. Our teams develop, analyze, and create flexible integration solutions crossing all product areas such as sensors, effectors, command and control, logistics, and operations. They develop tools and methods to evaluate campaign, mission, and system level analysis and visualizations based on customer requirements.

What You Will Do

• This is an onsite modeling and simulation (ModSim) position using our Python-based proprietary ModSim software. You will support the design, development, and utilization of medium-fidelity digital simulation software in advanced technical computing environments.
• You will contribute your knowledge to evaluate work across a wide range of intriguing computational problems to answer operational questions such as: What should the next military system-of-systems look like? What is the effectiveness of new technologies against large-force adversaries and multiple threats? What counter-measures should be considered to increase efficiency and/or improve survivability, and what are the answers to the customer's operational performance questions? What numbers and costs get the best performance?
• You will contribute to mission-level system modeling and data analysis activities to support new business, system-of-systems design, and operational impacts of new concepts of operations.
• You will contribute and collaborate with your team using inputs from program, external customers, or team experts, while working on projects across multiple military operational domains (aerospace, maritime, subsurface, land) as you determine, develop, and implement analysis to generate informed decisions.
• You will support and build ModSim software and analyze results to influence the product lifecycle.
• You will develop and implement model-based solutions to support mission trade studies using mission level simulations to ensure they meet defined requirements and performance.
• You will innovate and explore ideas which make a difference.

Qualifications You Must Have

• Master's degree in science, technology, engineering, or mathematics (STEM), or equivalent experience.
• This position requires 12 months, or less, of relevant professional work experience (excluding internships).
• Applied and/or academic experience of modeling and simulation of physical systems.

Qualifications We Prefer

• Specific majors: Systems Engineering, Software Engineering, Operations Research, Math, Applied Math, Industrial Engineering, Physics, Aerospace Engineering, or similar.
• Minimum 3.2 cumulative GPA is required.
• Knowledge of the system engineering life-cycle model.
• Experience in data analysis and statistics, especially dealing with large volumes of data.
• Coursework or internship experience in the following areas: Software development processes and object-oriented design using C/C++ and/or Java in either Unix or Linux computing environments.
• Scripting languages such as Python, Shell or Perl.
• Numerical computing environments such as MATLAB.
• AI/ML and high-performance computing (HPC) grids.
• Demonstrated ability to work effectively with a high performing team.

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.
• Relocation Eligibility

The salary range for this role is $72,000 - $144,000. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including but not limited to, individual performance, business unit performance, and/or the company’s performance.

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, 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 Section 503 of the Rehabilitation Act and the Vietnam Era Veterans' Readjustment Assistance Act.