Senior Principal System-of-Systems Architect (Onsite)
Date Posted: 2026-04-13 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; 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 technological 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 10 years of prior relevant experience unless prohibited by local laws/regulations. 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 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. Experience in developing system architectures, including demonstrated experience with RTX Enterprise Architecture Process (or equivalent), Department of Defense Architecture Framework (DoDAF) or Unified Architecture Framework (UAF), and Architecture Planning. US security clearance prior to the start date. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance. Active and transferable U.S. government issued secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Qualifications We Prefer RTX Certified Architect preferred; otherwise, interest in pursuing certification as a RTX Certified Architect is expected. Advanced Degree in Engineering, Science, Mathematics, or related discipline. Experience instructing architecture and/or systems engineering in the corporate and/or college setting. Experience in Military CONOPs and CONEMPs. Existing TS/SCI security clearance, or past qualification for this clearance. Excellent communication skills for, and demonstrated effective collaboration with, different levels of subordinates, employees, customers, departments, and senior managers throughout the company’s organizations. Strong mentoring skills, both technically and professionally. Experience and knowledge of the RTX Lifecycle Program Management (RLPM), Proposals, and Basis of Estimates (BOEs). What We Offer Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation. 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. This position requires 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 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 132,400 USD - 251,600 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
