Principal Systems Engineer - RF Engineer

Date Posted: 2026-09-14 Country: United States of America Location: US-CO-AURORA-S75 ~ 16800 E Centretech Pkwy ~ BLDG S75 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: TS/SCI Security Clearance Status: Active and existing security clearance required on day 1 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. We have an exciting opportunity for a Principal Systems Engineer - RF Engineer supporting one of our premier programs at Raytheon, an RTX Business. The Apertures and RF Team is seeking an experienced RF Engineer to provide technical leadership for adaptable and multidisciplinary hardware systems. The team is responsible for system analysis, trade studies, design, design reviews, testing, fielding and hardware refresh, integration, and operational support. In this role, you will lead and contribute to engineering activities throughout the product lifecycle, from initial concept definition and system analysis through detailed design, development, qualification testing, fielding, sustainment, and customer support. You will provide technical leadership across complex RF communications links and systems, antenna system design, functionality, and operation while working with multidisciplinary engineering teams, program leadership, and customers to resolve technical challenges and deliver mission capabilities. The work is on-site in Aurora, CO, and program support activities may require travel to CONUS and OCONUS locations, not expected to exceed 25%. What You Will Do

• Lead the planning and execution of system analysis, integration, verification, and troubleshooting activities in laboratory and operational environments
• Lead technical analysis and trade studies supporting RF communications systems, antenna systems, and electronic hardware
• Coordinate technical activities with multidisciplinary engineering teams, Program Management, Systems Engineering, Chief Engineering, and customer organizations
• Lead troubleshooting and failure data analysis activities, including root cause and corrective action processes using laboratory and field test equipment
• Develop and review detailed performance evaluations using engineering analysis tools such as MATLAB, Python, Ansys HFSS, or similar tools
• Lead the preparation and presentation of technical results through reports, design reviews, and briefings to internal and external stakeholders
• Provide technical leadership for the design, integration, testing, troubleshooting, fielding, and sustainment of RF hardware systems
• Lead root-cause analysis and support the development and implementation of engineering design changes and technical solutions
• Develop, review, and maintain engineering specifications, design documentation, analysis requirements documents, schematics, and assembly drawings
• Coordinate and resolve system-level technical issues across engineering disciplines and program organizations
• Participate in and lead technical working groups, engineering tag-ups, interface meetings, teleconferences, and program reviews
• Support the development and implementation of engineering processes and technical requirements
• Lead or support mockup hardware installation, integration, troubleshooting, and repair activities
• Support sustainment activities, including depot returns, failure analysis, troubleshooting, and hardware repair

Qualifications You Must Have

• Typically requires a Bachelor's Degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 8 years of prior relevant experience
• Experience leading or supporting RF communications links and systems, antenna systems, electronic hardware systems, or related RF engineering activities
• Experience performing system analysis, technical trade studies, design, integration, testing, verification, or troubleshooting of complex RF or electronic systems
• Experience using engineering and analysis tools such as MATLAB, Ansys HFSS, Python, or similar tools, along with commercial test equipment such as oscilloscopes, spectrum analyzers, signal generators, or network analyzers
• Active and transferable DoD TS/SCI U.S. government-issued security clearance is required prior to start date.

Qualifications We Prefer

• Experience with reflector system design and antenna feed design
• Experience with solid-state amplifier performance parameters and high-power tube amplifier technology
• Experience with computer networking and cybersecurity or INFOSEC practices
• Experience with electrical schematics, interface control documentation, engineering specifications, and communications protocols
• Experience with instrumentation and collection of large data sets, including the application of scripting or automation to data collection and analysis

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
• Relocation eligible

Learn More & Apply Now! Please consider the following role type definition as you apply for this role:

• 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 position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the U.S. Department of State website here: (
• Location: Aurora, CO: (

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 107,500 USD - 204,500 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 Raytheon