Modeling And Simulation Engineer Jobs in Nashua, NH

Date Posted:
2026-08-11
Country:
United States of America Location:
US-MA-WOBURN-WB2 ~ 225 Presidential Way ~ GODDARD BLDG Position Role Type:
Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. 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 after day 1 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. The Integrated Solutions, Modeling, and Architecture (ISMA) directorate 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 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. What You Will Do * 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 Qualifications 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 with MATLAB, Python, and/or C/C++
* Experience in Military Operations Analysis, wargaming, and/or Modeling & Simulation experience in the defense industry, and/or data analysis & visualization
* The ability to obtain and maintain a U.S. government secret security clearance is required prior to start. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Qualifications We Prefer * 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 mode
* 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 Learn More & Apply Now * 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.
* Location: Woburn or Tewksbury, MA
* Clearance Information: This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm
* 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.#LI-RH2 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. The salary range for this role is 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, 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. 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. 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. Privacy Policy and Terms: Click on this link to read the Policy and Terms