Leslie Stevenson Ellis

Leslie Stevenson Ellis serves as a key procurement lead within Washington Headquarters Services, supporting the Department of Defense’s mission to modernize institutional management systems and optimize enterprise-wide administrative operations. In this capacity, Ellis manages a portfolio of engineering services contracts critical to sustaining DoD infrastructure and advancing digital transformation initiatives. Their work centers on acquiring technical consulting, systems integration, and operational support services that enhance decision-making across DoD components, ensuring alignment with strategic modernization goals and efficient resource utilization. Ellis maintains consistent, long-term relationships with a select group of high-performing 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-sector engineering and enterprise consulting. The contracting approach emphasizes performance-based outcomes, rigorous compliance with federal acquisition regulations, and sustained vendor accountability through task order and indefinite-delivery/indefinite-quantity mechanisms. Ellis’s procurement activity is entirely non-set-aside, with 100% of awards issued under full and open competition. This reflects a strategic focus on selecting the most technically capable and cost-effective solutions, regardless of socioeconomic status, consistent with WHS’s mandate to prioritize mission effectiveness over mandated set-asides. While small business participation is not formally targeted, all vendors are evaluated on merit, technical capability, and past performance. The primary procurement focus is on NAICS 541330 (Engineering Services), encompassing systems engineering, technical analysis, infrastructure modernization, and operational support services. Ellis specializes in acquiring complex, mission-critical engineering solutions that support DoD’s institutional infrastructure, including facility optimization, process automation, and enterprise resource planning enhancements, demonstrating deep expertise in technical service acquisition within the defense enterprise.