Tamara F. Kostos

Tamara F. Kostos serves as a Contracting Officer within the FA4418 628 Cons Pk unit of the Department of the Air Force, responsible for managing mission-critical acquisitions to sustain and modernize infrastructure at Joint Base Charleston and associated installations. Her portfolio encompasses construction, maintenance, and mission-enabling services essential to airfield resilience, utility systems, and facility operational readiness. She executes full and open competitions as well as set-aside procurements under FAR Part 19, ensuring compliance with federal acquisition regulations while delivering timely, high-quality outcomes that support national defense readiness. Kostos maintains consistent working relationships with a core group of contractors including MCKENZIE CONSTRUCTION & SITE DEVELOPMENT LLC, PROTECT KITCHEN EXHAUST CLEANING, LLC, ACCESS PORTABLE TOILETS INC, and ML Armaments LLC, reflecting a blend of heavy construction, environmental services, and specialized defense support vendors. Her contracting patterns emphasize long-term vendor partnerships grounded in performance reliability and regulatory compliance, particularly for complex, multi-year service contracts requiring technical expertise and site-specific logistics. Her procurement strategy prioritizes small business participation, with approximately 32.8% of awards designated as total small business set-asides under FAR 19.5, and an additional 4.5% allocated to 8(a) competed contracts. She actively promotes socioeconomic contracting goals, including limited but intentional use of Service-Disabled Veteran-Owned Small Business set-asides, demonstrating a balanced commitment to both competition and inclusive contracting. Kostos specializes in procurements under NAICS codes 561730 (Landscaping Services), 325180 (Other Basic Inorganic Chemical Manufacturing), and 221310 (Water Supply and Irrigation Systems), indicating deep expertise in environmental compliance, facility utilities, and infrastructure maintenance. Her technical focus spans industrial equipment repair, chemical handling for base operations, and site development services critical to sustaining military readiness across diverse operational environments.