*US Citizenship Required *On-site in Fairfax, Virginia, only Think Tank is a woman-owned small business with more than 27 years of proven success delivering exceptional IT and consulting services to the federal government. We are currently seeking an ideal candidate for the position of Senior RF Frequency Engineer to support a high-impact staff augmentation project with Fairfax County, Virginia. This position is conditional upon contract award expected in September / October 2025. Résumé of successful candidate(s) will be included with our proposal. The requirements are as follows: - Education: B.A., B.S. degree or equivalent combination (education/experience) - Basic Experience: At least five (5) years of experience in FCC regulatory process, frequency planning and coordination. - Sample Duties: Coordinates and analyzes radio frequency planning and coordination. - Assists clients in filing FCC license applications, modifications, and maintenance of FCC licenses. - Performance frequency searches to identify available spectrum. - Files notifications and required information pertaining to FCC tower registrations and performs research to determine tower construction requirements. - Performs various tests and conducts analysis