Senior 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 ten (10) 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

• Experience in integrating COTS solutions

Qualifications We Prefer

• Familiarity with digital twin concepts

• 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