Sr. Principal Radar / RF Electrical Subsystems Engineer

What You Will Do Develop and architect radar and RF subsystem solutions, including front‑end RF chains, antennas, high‑speed digitizing paths, and signal‑processing‑critical interfaces. Perform modeling, analysis, and simulation of RF and radar subsystem performance, including ultra‑wideband (UWB) and high‑power‑density architectures. Evaluate hardware designs, subsystems, and components for radar seekers and related RF systems. Generate and document subsystem‑level requirements, interface definitions, test plans, and verification artifacts. Conduct technical peer reviews and serve as subject‑matter expert for radar/RF integration topics. Support lab testing, field test events, and root‑cause failure analysis for radar and RF subsystems. Mentor junior engineers and contribute to technical excellence across the organization. Collaborate regularly with program leadership, functional management, suppliers, and customers; may support multiple programs simultaneously and travel domestically and internationally as required. Build and leverage cross‑functional networks to solve complex technical challenges. Qualifications Must have: Bachelor’s degree in STEM and 10years of prior relevant experience (advanced degrees may substitute). Experience with electrical hardware development, RF subsystem design, radar hardware, RF seeker architectures, subsystem or systems engineering, requirement development, and validation. Proficiency in RF modeling with HFSS and/or CST; high‑power‑density RF architectures; thermal/electrical trade‑space management; high‑speed digitizing and high‑bandwidth memory systems. Preferred: Hands‑on experience with missile radar or RF seeker subsystems; detailed design, troubleshooting, and integration of radar/RF components; adaptive radar resolution‑improvement techniques; deep understanding of S‑parameters and impedance‑matching; systems engineering and architecture; missile systems or high‑reliability products; mixed‑signal electronics; ultra‑wide‑band microwave components; thermal, electrical, and microwave physics dependencies; DoD/DoW hardware development processes; Model‑Based Systems Engineering (MBSE). What We Offer Location: Tucson, AZ with relocation assistance. Salary range: $132,400 – $251,600 USD. Benefits: 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, holidays, and more. Potential incentive compensation programs (annual short‑term and/or long‑term) depending on level and collective‑bargaining agreement. Additional benefits and eligibility vary by business unit and collective‑bargaining status. Position requires U.S. citizenship and an active DoD Secret security clearance. 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, veteran status, or any other 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. #J-18808-Ljbffr Prattwhitney