Sheila S. Mirrielees

Sheila S. Mirrielees serves as a key procurement professional within Dha Enterprise Medical Support (EMS-CD), supporting the Defense Health Agency’s mission to modernize and secure digital health infrastructure for military medical operations. She manages acquisitions for enterprise-level IT services critical to clinical operations, data interoperability, and health system modernization, with a focus on software development, systems integration, and technical support solutions. Her work ensures that the Department of Defense’s health IT ecosystem remains resilient, scalable, and compliant with federal cybersecurity and interoperability standards. Mirrielees engages with a broad spectrum of contractors specializing in health IT modernization, including firms delivering custom software development, systems design, and clinical workflow automation. While no single vendor dominates her portfolio, she consistently partners with vendors capable of meeting stringent DoD security requirements and integrating with existing defense health platforms such as MHS GENESIS. Her contracting approach emphasizes performance-based outcomes, agile delivery methodologies, and compliance with Federal Acquisition Regulation (FAR) standards for complex IT services. Her procurement patterns reflect a strong preference for open competition, with 94.4% of awards issued without set-aside restrictions. However, she actively supports small business participation, with 5.6% of contracts awarded under total small business set-asides, demonstrating a balanced commitment to both operational efficiency and socioeconomic goals. She does not prioritize specific socioeconomic categories such as 8(a), HUBZone, or SDVOSB, but remains responsive to qualified small business proposals that meet technical and compliance thresholds. Her primary procurement focus lies in NAICS 541519 (Other Computer Related Services) and 541511 (Custom Computer Programming Services), reflecting demand for tailored health IT solutions, clinical data analytics tools, and interoperable software platforms. She also procures computer systems design, training, and health information management services, underscoring her expertise in end-to-end digital health transformation across the military medical enterprise.