Senior Principal Systems Engineer

Job Description Date Posted: 2026-07-07\n Country: United States of America \n Location: US-AZ-TUCSON-M02 ~ 1151 E Hermans Rd ~ BLDG M02 \n Position Role Type: Onsite \n 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​ \n Security Clearance Type: DoD Clearance: Secret \n Security Clearance Status: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date\n \n \n \n At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world. \n RTX is seeking an experienced GPS Guidance Electronics Subsystem Engineer to join the Guidance Electronics Team supporting advanced missile systems. This role is responsible for the development, integration, analysis, and validation of GPS-based navigation solutions used in mission-critical defense applications. \n \n The selected engineer will work across the full product lifecycle, partnering with systems engineers, suppliers, and cross-functional engineering teams to develop and deliver advanced guidance electronics hardware. This position requires expertise in GPS technologies, RF electronics, navigation systems, subsystem architecture, requirements development, integration, testing, and troubleshooting. What You Will Learn\n \n \n GPS Navigation Systems \n \n Inertial Measurement Units (IMUs) \n \n Guidance Electronics \n \n RF and Radar Systems \n \n Systems Engineering \n \n Hardware Integration & Test \n \n Modeling & Simulation \n \n Kalman Filtering \n \n Hardware Architecture Development \n \n Missile Guidance Systems \n \n What You Will Do\n \n \n Develop GPS and navigation subsystem architectures for advanced missile systems. \n \n Define and decompose subsystem requirements into hardware and component-level requirements. \n \n Perform system analysis, modeling, simulation, integration, and validation activities. \n \n Develop test plans, verification strategies, and qualification methodologies. \n \n Conduct root cause analysis and failure investigations. \n \n Support hardware integration, Hardware-in-the-Loop (HIL) testing, environmental testing, and system validation. \n \n Interface directly with GPS, IMU, and navigation component suppliers to ensure technical and programmatic compliance. \n \n Participate in design reviews and provide technical leadership across engineering teams. \n \n Collaborate with systems engineering, program management, customers, and government stakeholders. \n \n Support multiple programs and product lines as required. \n \n Mentor junior engineers and contribute to technical development within the organization. \n Qualifications You Must Have\n \n \n Typically requires a Bachelors degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience \n \n Minimum 10 years of engineering experience. \n \n Experience developing electrical hardware systems and subsystems. \n \n Experience with systems engineering, requirements development, requirements verification, and validation. \n \n Experience designing and developing RF-based electrical subsystems. \n Qualifications We Prefer\n \n \n Experience with GPS and IMU navigation systems. \n \n Knowledge of integrated navigation solutions utilizing Kalman filtering techniques. \n \n Experience with military GPS technologies, including M-Code. \n \n Familiarity with MATLAB modeling and scripting. \n \n Experience with RF electronics, radar systems, antennas, analog RF circuitry, digital electronics, and configurable logic. \n \n Experience supporting missile systems, guidance electronics, or similar aerospace and defense applications. \n \n Knowledge of Hardware-in-the-Loop (HIL) testing, modeling and simulation, and environmental qualification testing. \n \n Understanding of Department of Defense hardware development processes and design reviews. \n \n Experience leading cross-functional engineering teams. \n \n Experience managing technical supplier relationships. \n \n Familiarity with Model-Based Systems Engineering (MBSE). \n \n Proposal development and capture support experience. \n What We Offer\n 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. \n \n \n \n This position is 100% onsite in Tucson, AZ and is eligible for relocation assistance. \n \n \n As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect 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. \n 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.\n \n \n 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.\n \n 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.\n \n 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.\n \n 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.\n \n \n 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. \n \n \n Privacy Policy and Terms: \n Click on this link to read the Policy and Terms