Dimitria Antonopoulos

Dimitria H. Antonopoulos serves as a Contracting Officer at Washington Headquarters Services (WHS), a critical support agency within the Department of Defense responsible for delivering enterprise-wide administrative, operational, and technical services. In this role, she manages the full lifecycle of complex procurements aligned with WHS’s mission to modernize defense infrastructure and optimize institutional management systems. Her acquisitions primarily focus on professional services, including management consulting, technical support, and specialized equipment procurement, ensuring compliance with federal acquisition regulations and strategic DoD priorities such as digital transformation and resource efficiency. Antonopoulos maintains consistent working relationships with a core group of contractors, including CLARITY INNOVATIONS LLC, CYNERGY PROFESSIONAL SYSTEMS LLC, SIGNATURE RENOVATIONS LLC, AMD INTERNATIONAL TECHNOLOGIES LLC, and GUIDEHOUSE INC. These partnerships reflect a preference for established firms with proven expertise in defense-related administrative and technical services. Her contracting patterns emphasize performance-based outcomes, long-term service delivery, and vendor reliability, fostering stable, mission-critical vendor relationships that support WHS’s operational continuity. Her set-aside strategy prioritizes broad competition, with 70% of awards issued under open, no-set-aside conditions. However, she actively promotes small business participation through a structured approach: 20% of contracts are awarded as total small business set-asides under FAR 19.5, and 10% are competed specifically under the 8(a) Business Development Program, demonstrating a balanced commitment to socioeconomic goals without compromising mission readiness. Antonopoulos specializes in procurements under NAICS 541990 (All Other Professional, Scientific, and Technical Services) and 541611 (Administrative Management Consulting), which together account for half of her portfolio. She also regularly acquires office equipment wholesaling (423420), communications equipment (334290), and specialized security services (561622), reflecting a diverse technical domain spanning administrative modernization, facility operations, and enterprise support systems. Her expertise lies in aligning procurement strategy with institutional needs across a broad spectrum of defense-enabling services.