Date Posted:2026-08-04 Country:United States of America Location:US-CA-FULLERTON-675 ~ 1801 Hughes Dr ~ BLDG 675 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 1At 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.What You Will DoWe’re looking for Systems Engineers who enjoy solving complex problems, engaging in a dynamic team environment, and are eager to learn. As a Principal Radar Systems Engineer, you will participate in challenging multi-disciplinary work consisting of: Radar DevelopmentRequirements Development, Functional Allocation, MaintenanceModeling Simulation, and AnalysisIntegration & Test of Radar Hardware and SoftwareFlight Tests and Performance AnalysisRadar System Sell-OffQualifications You Must HaveTypically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experienceExperience in radar or RF systemsExperience as a Systems Engineer including two or more of the following: requirements, design; specification development, modeling, simulation, or performance analysis; HW/ SW integration and test and verificationExperience in a technical leadership positionQualifications We PreferAdvanced Degree in Engineering, Science, Mathematics, or related STEM degreeExperience with radar design, modeling/simulation, hardware/software integration, test and verification Course work or experience in some of the following fields: radar, signal & image processing, radar and/or EO/IR environment models, digital communications, probability and statistics, linear algebra, estimation theory, optimal control, system architectureExperience applying object-oriented software design in C++, C, and using MATLAB or Python for evaluation of data sets Experience working on a team and by yourself, interfacing with multiple engineering disciplines and developing and presenting technical briefings Ability to make data-driven decisions in a fast-paced, dynamic environment with time-critical requirements and competing priorities.Strong technical writing, oral presentation, and interpersonal skills.Experience using UNIX/Linux based workstations and using Software Configuration Management tools EVMS experienceExperience with Agile principles and methodologiesExperience with Jira and ConfluenceSAFe Product Owner certification or related industry certificationExperience developing proposals (i.e., developing TINA compliant Basis of Estimates)Learn More & Apply NowPlease ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: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 role is located onsite in Fullerton, CA.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 118,300 USD - 224,900 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