Date Posted: 2025 07 23 Country: United States of America Location: MA131: Tewksbury, MA Bldg 1 Assabet 50 Apple Hill Drive Assabet Building 1, Tewksbury, MA, 01876 USA 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: Secret Current At Raytheon, the foundation of everything we do is rooted in our values and a higher calling â 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. Integrated Air & Missile Defense Systems (IAMDS) department is seeking a Senior Systems Engineer (Modeling & Simulation). IAMDS leads all aspects of Systems Engineering that drive the development of complex systems to support the Raytheon Land and Air Defense Systems (LADS) mission area from our Tewksbury MA, and Andover MA locations.⯠The IAMDS department supports Raytheon by cultivating a world class group of systems thinkers who work together as a team to architect technical solutions to some of the world's toughest challenges. This position is onsite in Tewksbury, MA What You will Do: You will communicate with cross functional engineering teams to coordinate design plans and requirements analysis. You will manage program technical risks by evaluating requirements and design aspects. You will develop and maintain modeling tools incorporating Digital Signal Processing (DSP) with complex time domain elements. You will incorporate radar system concepts including detection, discrimination, track and signal processing algorithms to model their behaviors and performance. You will incorporate effector system concepts including guidance and fuzing to model their behaviors and performance. Qualifications You Must Have: Typically requires a Bachelor's in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 5 years of prior engineering experience or equivalent experience. An active and transferable Secret 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 the required security clearance. Experience of complex Digital Signal Processing with the ability to develop complex time domain signal models for use in design support and requirements analysis. Experience with the development and coding of system models, algorithms, test vectors and analysis tools in support of analyzing radar requirements and performance. Qualifications We Prefer: Master's degree in Engineering, Science, Mathematics or related discipline. Experience with system requirements capture, design, and decomposition. Experience of radar system concepts; detection, discrimination, track and signal processing algorithms and their behaviors and performance. Ability to read and understand technical design drawings and electrical schematics. Experience of taking ownership of tasks and lead technical efforts spanning multiple stakeholders, and be able to communicate effectively with all levels of the organization. Experience using MATLAB for model development. ⯠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. Learn More & Apply Now! Please consider the following role type definition as you apply for this role. 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. The salary range for this role is 82,000 USD 164,000 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 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 â 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.