Principal System-of-Systems Architect/ Principal Systems Engineer (Onsite)

Date Posted:

2026-04-10

Country:

United States of America

Location:

US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805

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 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.

Our system-of-system architecture team serves highly visible programs and RTX projects, performing highly technical assignments, directly contributing to protecting our nation and our war fighters.  Specifically, we are looking for experienced systems architects with experience in developing useful architectures while synthesizing information from multiple stakeholders, representing these architectures in frameworks such as UAF, DoDAF, TOGAF, Zachman, etc., using Cameo to generate appropriate SysML and other artifacts, and then following through with the implementation teams to develop understanding, deconflict interfaces, and ensure mission success.  

The applicant for this position would be an experienced system architect or system engineer currently developing systems, enterprise, and/or software architecture, with documented experience leading projects and teams.  The applicant would have developed engineering solutions at many points of the product lifecycle and would have notable breadth and depth of domain knowledge derived from significant experience in one or more areas of national defense.

Location: Onsite at any of the following sites:  Tucson, AZ (preferred); McKinney, TX; Tewksbury, MA; Woburn, MA; St. Pete, FL; Orlando, FL

What You Will Do

• You will develop system architectures and system-of-system (SoS) architectures to optimize customer mission success.

• Build and lead teams in the development of system architectures and in the development of system architecture models in Cameo.

• Work in a team environment working with RTX Certified Architects and architect apprentices.

• Develop system and SoS architecture models in Cameo, while following SysML, UAF, TOGAF, and other architecture framework standards as appropriate to meet project objectives.

• In support of proposals, you will architect winning solutions across complex technology domains, sometimes rapidly in support of proposals on a short timeline.  Collaborate with the Capture Team; Technology Directors; and Mission Area, Engineering, and Business Development leaders to improve proposal outcomes.

• Develop architecture methods and tools for SoS.

• You will travel as required – anticipated 10% to various sites.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience unless prohibited by local laws/regulations.

• Technical and Domain experience: Seven or more (7+) years of documented professional experience in one or more of the following technical domains:

  • Systems engineering and/or design

  • System performance and/or Mission Planning analysis

  • Modeling and simulation (e.g., Operations Analysis, 6-DOFs, etc.)

  • Software architecture, design, development, integration, and verification

  • This professional experience must include at least two (2+) years of documented technical work experience in at least one Raytheon mission domain such as:  Land Warfare, Integrated Air and Missile Defense, Naval Power, Air Power, Space, ISR, Strategic Missile Defense, Advanced Technology, etc.

• System Architecture experience: Must have one or more (2+) years of documented work experience in developing system architecture