Senior Principal GPS Subsystem Engineer

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.

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.

• Develop GPS and navigation subsystem architectures for advanced missile systems.
• Define and decompose subsystem requirements into hardware and component‑level requirements.
• Perform system analysis, modeling, simulation, integration, and validation activities.
• Develop test plans, verification strategies, and qualification methodologies.
• Conduct root cause analysis and failure investigations.
• Support hardware integration, Hardware‑in‑the‑Loop (HIL) testing, environmental testing, and system validation.
• Interface directly with GPS, IMU, and navigation component suppliers to ensure technical and programmatic compliance.
• Participate in design reviews and provide technical leadership across engineering teams.
• Collaborate with systems engineering, program management, customers, and government stakeholders.
• Support multiple programs and product lines as required.
• Mentor junior engineers and contribute to technical development within the organization.

• Typical requirement of a Bachelor’s degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 10 years of prior relevant experience.
• Minimum 10 years of engineering experience.
• Experience developing electrical hardware systems and subsystems.
• Experience with systems engineering, requirements development, requirements verification, and validation.
• Experience designing and developing RF‑based electrical subsystems.

• Experience with GPS and IMU navigation systems.
• Knowledge of integrated navigation solutions utilizing Kalman filtering techniques.
• Experience with military GPS technologies, including M‑Code.
• Familiarity with MATLAB modeling and scripting.
• Experience with RF electronics, radar systems, antennas, analog RF circuitry, digital electronics, and configurable logic.
• Experience supporting missile systems, guidance electronics, or similar aerospace and defense applications.
• Knowledge of Hardware‑in‑the‑Loop (HIL) testing, modeling and simulation, and environmental qualification testing.
• Understanding of Department of Defense hardware development processes and design reviews.
• Experience leading cross‑functional engineering teams.
• Experience managing technical supplier relationships.
• Familiarity with Model‑Based Systems Engineering (MBSE).
• Proposal development and capture support experience.

This position is 100% onsite in Tucson, AZ and is eligible for relocation assistance. The salary range for this role is USD 132,400 – 251,600. Hired applicants may be eligible for benefits including medical, dental, vision, life insurance, short‑term and 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.

Additionally, eligibility for annual short‑term and/or long‑term incentive compensation programs depends on the level of the position.

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.