Shawna E. Ramthun

Shawna E. Ramthun serves as a key procurement lead within the Public Buildings Service’s R5 Acquisition Management Division, overseeing the acquisition of mission-critical facility support services for federal buildings nationwide. She manages a portfolio focused on interior renovations, building systems modernization, and infrastructure upgrades, ensuring compliance with federal construction standards and sustainability goals. Her work directly supports the General Services Administration’s mandate to maintain and enhance the federal government’s physical infrastructure through efficient, transparent contracting practices. Ramthun specializes in complex, performance-based acquisitions that integrate mechanical, electrical, and environmental systems to optimize building operations and lifecycle performance. She maintains a consistent working relationship with MCKENZIE CONSTRUCTION & SITE DEVELOPMENT LLC, a primary contractor for plumbing, heating, air-conditioning, and specialized building equipment installations. Her procurement approach emphasizes long-term vendor partnerships grounded in technical proficiency, regulatory compliance, and delivery reliability. Ramthun prioritizes contractors with demonstrated expertise in federal facility upgrades and a track record of meeting stringent GSA performance metrics, fostering collaborative relationships that ensure timely, high-quality outcomes across diverse geographic locations. Ramthun’s contracting patterns reflect a strong emphasis on open competition, with 80% of awards issued without set-asides, while maintaining a deliberate 20% commitment to Total Small Business Set-Asides under FAR 19.5. This balance ensures broad market access while actively promoting small business participation across the federal construction ecosystem. Her approach aligns with GSA’s socioeconomic goals, consistently channeling opportunities to qualified small businesses without compromising technical rigor or mission readiness. Her primary technical focus lies in NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors) and 238290 (Other Building Equipment Contractors), reflecting deep expertise in HVAC systems, building automation, and integrated mechanical infrastructure. She procures specialized services including ductwork installation, chiller replacements, hydronic system retrofits, and energy-efficient equipment upgrades, demonstrating a nuanced understanding of building science and federal facility operational requirements.