Principal Systems Engineer (MBSE)

Date Posted: 2026-07-02 Country: United States of America Location: US-MA-TEWKSBURY-TB1 ~ 50 Apple Hill Dr ~ ASSABET BLDG 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'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 Model-Based Systems Engineer (MBSE) Engagements Subject Matter Expert (SME) will drive the implementation of Model-Based Systems Engineering (MBSE) solutions at Raytheon. You will collaborate with the Raytheon Systems Engineering solution development teams to implement Model Based Engineering (MBE) capabilities and practices as part of the standard Raytheon Digital Engineering Ecosystem. You come to this role with a strong background in hardware product development combined with experience in MBSE, MBE, and Model-Based Product Line Engineering (MBPLE). This is an onsite role located in Tewksbury, MA, Marlborough, MA, Woburn, MA, or Aurora, CO. What You Will Do Drive Systems Engineering processes on your engagements Create and validate MBSE models including Stakeholder Needs/Requirements; Behavioral Diagrams; Structural Diagrams; Measures of effectiveness/technical performance measures Support the development of connectivity between MBSE tools and other hardware design/analysis tools Create specifications, interface descriptions, execute trade studies and analyses Lead multiple tool and environment integrations Develop and share best practices, mentor, and train others Qualifications You Must Have Typically requires a degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of eight (8) years of relevant prior experience in MBSE Experience with systems, mechanical, or electrical design and analysis tools Experience with requirements development and management Experience with Cameo/MagicDraw/Teamwork Cloud and SysML modeling Experience with MagicGrid methodology and framework Experience developing products in various product development lifecycles including agile and waterfall Qualifications We Prefer Familiarity with digital twin concepts Familiarity in integrating COTS solutions Familiarity with Syndeia (semantic broker) by Intercax Familiarity with Product Line Engineering (PLE) and applying concepts to a SysML model Familiarity in digital ecosystems and data connectivity via digital threads Familiarity with data visualization tools including Power BI, Kibana, and/or Grafana Exposure to MBSE starting point models and MBSE Digital Engineering Environments Ability to prepare and present status, plans, and risks to management OMG Certified Systems Modeling Professional (OCSMP) INCOSE Associate Systems Engineering Professional (ASEP) Familiarity with Department of Defense Architecture Framework (DoDAF) or Unified Architecture Framework (UAF) 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. This position is eligible for relocation assistance. 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. 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 107,500 USD - 204,500 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 – 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.