Isiah Mack

Isiah Mack serves as a Contracting Officer at Washington Headquarters Services (WHS), part of the Department of Defense, where he manages complex acquisition portfolios supporting enterprise-wide administrative, operational, and technical modernization initiatives. His responsibilities include full-cycle procurement of mission-critical services and specialized equipment, ensuring compliance with FAR and DFARS regulations while advancing DoD’s strategic priorities in digital transformation and institutional efficiency. Mack routinely handles acquisitions for IT modernization, communications infrastructure, and professional consulting services, often coordinating across multiple DoD components to align contracting outcomes with broader defense enterprise goals. Mack 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 vendors with proven capabilities in systems integration, facility modernization, and strategic advisory services. His contracting approach emphasizes performance-based outcomes, risk mitigation, and long-term vendor reliability, fostering collaborative, results-driven engagements rather than transactional transactions. While the majority of his acquisitions—75.8%—are conducted without set-asides, Mack demonstrates meaningful support for small business participation, with 21.2% of awards designated as total small business set-asides under FAR 19.5 and an additional 3.0% reserved for service-disabled veteran-owned small businesses. His socioeconomic contracting patterns reflect a balanced commitment to both efficiency and inclusion, consistently leveraging small business programs where market conditions permit. His primary procurement focus centers on NAICS 511210 (Software Publishers), followed by 541519 (Other Computer-Related Services), 334517 (Irradiation Apparatus Manufacturing), and 334220/334290 (Radio, Television, and Communications Equipment Manufacturing). This technical specialization underscores his expertise in procuring advanced IT systems, secure communications hardware, and specialized electronic equipment critical to DoD’s operational and administrative modernization efforts.