Leidos' **Ground Based Radar Digitization (GBRD)** program is seeking a highly experienced **RF Subject Matter Expert (SME)** to provide site-specific RF requirements and technical guidance for upgrades to radar digital/RF backend systems. This is a large, multi-phase radar program with concurrent development, test, production, and sustainment activities. You will serve as the RF technical lead, ensuring RF design integrity, performance, and disciplined engineering execution across multiple sites. This role requires a systems-minded leader with deep RF expertise and the ability to direct technical work based on cost, schedule, risk, and requirements. Frequent travel to emplacement sites may be required. This is not your average engineering position. You will work on a team of the most talented engineers in the region who push you to be better every day. This is a fast-paced program with unique technical challenges that will be a rewarding milestone in any engineering career. If you are up for the challenge of joining this team, then apply today to be considered. **Primary Responsibilities** - Develop and document site-specific RF requirements for upgrades to radar electronics. - Lead technical assessments of existing RF infrastructure to ensure compatibility with new hardware and signal processing requirements. - Define RF architecture across systems by driving low level requirements for module and LRU designs. - Oversee integration, installation, and commissioning of upgraded RF components. - Analyze and validate end-to-end RF signal chain performance, including gain, noise figure, and dynamic range, to meet system specifications. - Review and interpret schematics, block diagrams, and interface control documents for accurate implementation. - Collaborate with hardware, software, and systems engineering teams to resolve integration challenges and ensure seamless operation between legacy and new components. - Prepare and present technical reports, test results, and recommendations to program leadership and stakeholders. - Track and report progress on RF related engineering tasks, ensuring milestones are met for system deployment and operational readiness. **Basic Qualifications** - Bachelor's degree in Electrical Engineering or related field from an ABET-accredited university. - BS + 12 years RF engineering experience, or MS + 10 years. - Strong technical judgment and ability to communicate complex RF issues to technical and non-technical audiences. - Experience with formal design reviews (PDR/CDR), configuration management, and risk management. - Deep understanding of radar systems, RF electronics, and signal processing. - Active DoD security clearance. - Willing to travel frequently. **Preferred Qualifications** - Experience with radar, EO/IR, or other advanced sensing technologies. - Experience commissioning, maintaining, or decommissioning a radar site. **Original Posting:** June 16, 2026 For U.S. Positions: 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 $131,300.00 - $237,350.00 The Leidos pay range for this job level is a general guideline only and 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.