**Description** The Defense Systems group at Leidos currently has an opening for a **Senior Principal RF Antenna System Engineer** to work in our **St.Petersburg, FL** office. The Leidos facility in St. Petersburg provides design, development, modeling and simulation, analysis, prototyping and testing of advanced electronic systems, with a focus on embedded communication systems, Software Defined Radios and Phased Array Antenna Systems to various DOD and commercial customers. Primary Responsibilities + Lead a multi-discipline team of engineers to design, analysis/simulation, test and manufacture of phased array antenna systems. + Perform technical oversight, work with customers and programs to develop antenna system concepts that lead to defined antenna system requirements and specifications and perform trade studies. + Generate technical documentation including system architectures, test plans/procedures, test reports and providing recommendations on technologies and industry trending. + Contribute to future capture/pursuit opportunities, including white papers, RFI responses, or proposal of technical volumes. Basic Qualifications + Candidate must be a US citizen and able to obtain and maintain a Secret Security Clearance + Requires BS degree and 15 to 20 years prior relevant experience or Masters with 13-18 years of prior relevant experience. + Experience in designing, simulating, fabricating and testing of various shaped (planar, cylindrical, spherical, etc.) complex phased array antenna systems. + Experience in measuring phased array antenna in near and far field systems and processed algorithms for near field to far field. + Proficient with modeling and simulation tools such as HFSS, FEKO and Matlab. + Demonstrated ability to lead a multi-disciplined engineering team and to hold technical design reviews (SRR, PDR, CDR, and TIM) with customers. + A broad knowledge of project management + Excellent communication skills- oral and written Preferred Qualifications + Active Security Clearance + Possessed strong understanding of electromagnetic theory and concepts, phased array antenna systems and RF/Microwave systems. + Experience in developing algorithms to enhanced phased array antenna such as nulling, self-healing and digital beamforming. + Experience in working in various type of antenna facilities and use of antenna test and measurement equipment such as network analyzer, spectrum analyzer, RF power meter and RF signal generator. + Working knowledge of the radio frequency spectrum and modern communication infrastructures to include signal structures, propagation, modulation types, data rates, multiplexing/demultiplexing methods **Original Posting Date:** 2024-11-22 While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. **Pay Range:** Pay Range $126,100.00 - $227,950.00 The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. REQNUMBER: R-00148802 All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.