Principal Test Systems Engineer (onsite Tucson, AZ)

Date Posted: 2026-07-09 Country: United States of America Location: US-AZ-TUCSON-M10 ~ 3360 E Hemisphere Loop ~ BLDG M10 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: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date 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. This position is 100% onsite in Tucson, AZ. The Test Solutions Engineering (TSE) organization includes all of the engineering disciplines responsible for systems design & test of all Raytheon products. Our engineers are responsible for all elements of the development lifecycle for test including: test requirements, test system design, advanced engineering prototyping technology, flight operations, environmental testing, and environmental characterization. We are hands-on, designing with the latest technology and tools, and integrate state of the art test solutions with the most advanced engineering systems in the world.    As a Principal Systems Engineer, you are accountable to coordinate across all engineering teams to define, design, and document Test Environment capabilities and requirements.  You must be a systems thinker, able to see the “big picture”, and have the in-depth knowledge of development, production, User Operations, and embedded test process and practices.  As a Systems Engineer, you must know how prime hardware should be tested at every level (from component to All-Up-Round) to ensure robustness and efficiency.  What You Will Do You will apply your knowledge of the subsystem and collaborate with other Engineering disciplines to develop and implement the subsystem model using Model Based System Engineering tools and methods.  Detail capabilities and derive requirements.  Communicate test equipment needs and requirements to Test Equipment designers.  Manage requirements and traceability.  Leverage and apply reuse of Test Environment requirements and models to promote efficiency in test design and development.  You will develop subsystem requirements, interfaces, behaviors, and architecture.  You will interact with Technical SMEs as necessary to fully understand the subsystem including identifying and resolving issues and supporting related subsystem trades or analysis.  Qualifications You Must Have Bachelors in Science, Technology, Engineering, or Mathematics (STEM) with a minimum of eight (8) years of directly related engineering experience (or a STEM Masters with 6 years related experience) Experience in Systems Engineering or other Engineering discipline such as but not limited to emphasis in test requirements development, test methodologies, test requirements documents, integration, verification, and/or validation for test.  Experience with developing, decomposing, and/ or managing system requirements across a product lifecycle such as design and transition to production.  Experience with test related activities throughout the product lifecycle.  Experience with Model Based Engineering processes, techniques, and tools (Rhapsody and IBM Rational Model Manager and/or Cameo Systems Modeler/Enterprise Architect and Teamwork Cloud preferred, and experience with Systems Modeling Language (SysML), and/or Unified Modeling Language (UML).  Qualifications We Prefer Experience with embedded test techniques, design for test, design margin analysis, and/or design for manufacturing.  Experience with Agile processes and techniques.  Experience with Dynamic Object-Oriented Requirements System (DOORS).  Experience problem solving and debugging.  Experience recognizing areas of improvement or customer needs and relaying them to senior staff as business development possibilities.  Experience demonstrating a sense of urgency, prudent risk-taking and adaptive response to challenges.  Depending on level of experience, you will provide mentoring and guidance to other team members.  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. 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