Modeling and Simulation Engineer, Senior Systems Engineer

Date Posted: 2026-01-30

Country: United States of America

Location: US-MA-WOBURN-WB2 ~ 225 Presidential Way ~ GODDARD BLDG

Position Role Type: Onsite

Security Clearance Requirements

• U.S. Citizen, U.S. Person, or Immigration Status: 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. Active and transferable U.S. government issued security clearance is required prior to start date.

About Raytheon

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.

Raytheon's 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, we analyze the world's most challenging threats and help define new capabilities to counter them, pushing the boundaries of innovation, and leading the industry in operational modeling and simulation using our own purpose-built software.

About the Role

As a member in the Concept of Operations (CONOPS) Analysis Section, you will be joining a team of high-performing engineers focused on using modeling and simulating tools to conduct analysis on current and future integrated systems including sensors, effectors, command and control capabilities, to support the development of next generation of CONOPS for countering peer competitor threats across the operational domains. Our team's efforts include conducting analysis at the campaign, mission and system level based on our warfighting customer requirements.

The CONOPS Analysis section is hiring for a Modeling and Simulation Engineer, Senior Systems Engineer. This is an onsite role in either Woburn or Tewksbury, MA.

Responsibilities

• Develop and implement model-based solutions that meet defined requirements and functions that will support mission trade studies and performance simulations
• Contribute knowledge of performance engineering practices and procedures to evaluate work across a wide range of intriguing computational problems
• Contribute and collaborate in a team environment receiving input from the program or team experts
• The projects will vary in mission areas where your knowledge across the breadth of architectures will contribute to the development of the most effective approaches and solutions
• Evaluate end-to-end system requirements to understand system interfaces and data connectivity across military kill-chains
• Analyze data to understand performance requirements
• Develop analytical metrics to validate proposed architectures against requirements as well as help shape future tech growth
• Develop or implement algorithms to provide next-generation performance across entire system of systems

Required Qualifications

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience
• Experience with modeling and/or simulating systems
• Experience with MATLAB, Python, and/or C/C++
• Ability to obtain Interim Secret U.S. government issued security clearance is required prior to start date

Preferred Qualifications

• Advanced Degree in one of the following majors: Systems Engineering, Software Engineering, Operations Research, Math, Applied Math, Industrial Engineering, Physics, or Aerospace Engineering
• Active Secret or Top Secret DoD clearance
• Knowledge of the system engineering life-cycle model
• Experience in data analysis and statistics with large volumes of data
• Experience conducting analyses and studies, including how to define and execute a study
• Experience evaluating new concepts of operation and developing new technology use cases
• Demonstrated technical and analytical skills to develop credible results for presenting to the customer
• Experience in concepts such as Concept of Operations (CONOPS), system tradeoffs, threat definitions, and system of system assessments

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 Eligible – relocation assistance available for this position
• Employees who are working in Onsite roles will work primarily onsite
• Salary range: $86,800 USD - $165,200 USD

The salary range provided is a good faith estimate representative of all experience levels. 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
• 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.

Additional Information

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

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.

Equal Opportunity

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.

About RTX

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.