← Back to Jobs
Technology
Scientist, Systems Engineer (RF Systems) with Security Clearance
L3Harris TechnologiesRockwall, TX🇺🇸United StatesPosted 21 Jul 2026
Why This Role Stands Out
This hybrid role at L3Harris offers a fantastic opportunity to lead RF systems engineering on cutting-edge antenna subsystem projects, directly impacting national security and driving new business initiatives. You'll thrive if you're a mid-senior engineer eager to mentor others, develop state-of-the-art designs, and engage in both project execution and R&D within a supportive, mission-driven environment. Apply now to join a respected leader in defense tech and advance your career.
Quick Overview
Work Type
Hybrid
Level
Mid Senior
Job Description
L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Scientist, Systems Engineering - RF Systems Job Code: 41017 Job Location: Rockwall, TX Job Schedule: 9/80 (Every Other Friday Off) Job Description: L3Harris is seeking a Chief RF Systems Engineer to lead the engineering team as a technical subject matter expert. You will be part of a multi-disciplined engineering team working on diverse antenna subsystem projects. As a Chief RF Systems Engineer, you will be directly supporting proposal efforts to generate new business, mentor younger peers, lead timely program execution, develop state-of-the-art RF sub-system designs, and ensure antenna systems designs meet or exceed customer requirements. The role is for an individual who is open to additional learning and would relish the opportunity to immerse themselves in both project work and research and development activities. Essential Functions: * Serve as technical authority for the engineering team under the technical manager.
* Interact directly with customers to provide updates on program status and reviews.
* Work with business development to find, generate, and propose new business.
* Mentor and guide junior engineers and technicians in the design, build, and test phases of RF projects and programs.
* Provide technical solutions to a wide range of difficult problems involving antenna/sensor-based applications such as electronic warfare, electronic attack, electronic support measures, communications, geolocation, direction finding, etc.
* Collaborate with program management to coordinate development team's activities and manage project schedule. Qualifications: * Bachelor's degree in electrical, mechanical, or systems engineering with 12 years of prior relevant experience. Graduate degree and a minimum of 10 years of prior related experience. In lieu of a degree, a minimum of 16 years of prior related experience.
* Experience with full life cycle RF system design and test including RF, electrical, mechanical, and software.
* Demonstrated expertise in Solidworks or CST * Familiarity with antenna ranges and pattern testing (farfield, nearfield, compact, etc.)
* Demonstrated familiarity with Vector Network Analyzer calibration and measurement. Familiarity with spectrum analyzers, function generators, oscilloscopes, DMM, etc.
* Active DoD Secret Clearance Preferred Additional Skills: * Experience with technical baseline reviews, and other proposal management activities
* Experience in system analysis of multi-octave phased array antennas
* Familiarity with air to ground propagation modeling in the HF to mmW frequency range
* Analytical design experience using software and simulation tools such as AWR Microwave Office/Keysight ADS, CST, FEKO, and HFSS.
* Solid understanding of HF to mmW antenna fundamentals, as well as design and performance trade-offs L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law. Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information. By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions. L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.
* Interact directly with customers to provide updates on program status and reviews.
* Work with business development to find, generate, and propose new business.
* Mentor and guide junior engineers and technicians in the design, build, and test phases of RF projects and programs.
* Provide technical solutions to a wide range of difficult problems involving antenna/sensor-based applications such as electronic warfare, electronic attack, electronic support measures, communications, geolocation, direction finding, etc.
* Collaborate with program management to coordinate development team's activities and manage project schedule. Qualifications: * Bachelor's degree in electrical, mechanical, or systems engineering with 12 years of prior relevant experience. Graduate degree and a minimum of 10 years of prior related experience. In lieu of a degree, a minimum of 16 years of prior related experience.
* Experience with full life cycle RF system design and test including RF, electrical, mechanical, and software.
* Demonstrated expertise in Solidworks or CST * Familiarity with antenna ranges and pattern testing (farfield, nearfield, compact, etc.)
* Demonstrated familiarity with Vector Network Analyzer calibration and measurement. Familiarity with spectrum analyzers, function generators, oscilloscopes, DMM, etc.
* Active DoD Secret Clearance Preferred Additional Skills: * Experience with technical baseline reviews, and other proposal management activities
* Experience in system analysis of multi-octave phased array antennas
* Familiarity with air to ground propagation modeling in the HF to mmW frequency range
* Analytical design experience using software and simulation tools such as AWR Microwave Office/Keysight ADS, CST, FEKO, and HFSS.
* Solid understanding of HF to mmW antenna fundamentals, as well as design and performance trade-offs L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law. Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information. By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions. L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.
Similar jobs
IT Administrator II
CCINTEGRATION INC · Plano, United States
22 minutes agoSoftware Development Manager, Network Conrol Plane
Amazon Data Services, Inc. · Cupertino, United States
44 minutes ago$212.7k/yrSAP Developer/Remote
Apetan Consulting · United States
53 minutes agoCloud Platform Engineer with Security Clearance
E-INFOSOL LLC · Huntsville, United States
53 minutes agoSalesforce Developer
California SoftTech, Inc. · Columbus, United States
53 minutes agoSR. DevOps AWS Cloud Engineer
System One · Chantilly, United States
53 minutes ago$180k/yr