William Selsor

William Selsor serves as a key procurement professional within the Defense Information Systems Agency (DISA), supporting the agency’s mission to deliver secure, resilient, and interoperable C4I systems for global military operations. He manages a portfolio of IT services acquisitions focused on system design, custom programming, and mission-critical infrastructure sustainment, ensuring alignment with DoD cybersecurity standards and cloud modernization priorities. His work directly enables the agency’s technical readiness by facilitating timely contract awards for mission-enabling technologies and services that support command, control, and intelligence operations. Selsor maintains a primary working relationship with EXPRESSION NETWORKS LLC, a trusted vendor providing specialized IT services across DISA’s core domains. His contracting patterns reflect a preference for established contractors with proven capabilities in secure systems integration and enterprise IT management, indicating a focus on reliability, compliance, and operational continuity. While he engages with a limited number of core vendors, his approach emphasizes performance-based outcomes and long-term partnership over transactional procurement. His procurement strategy demonstrates a strong emphasis on open competition, with 88.9% of awards issued under non-set-aside conditions, reflecting a prioritization of technical merit and mission need over socioeconomic preferences. However, he consistently allocates 11.1% of opportunities to total small business set-asides under FAR 19.5, demonstrating a measured but deliberate commitment to small business participation without compromising mission requirements. Selsor’s acquisitions are heavily concentrated in NAICS 541512 (Computer Systems Design Services) and 541511 (Custom Computer Programming Services), underscoring his expertise in procuring tailored IT solutions for DISA’s evolving C4I architecture. He regularly sources services related to cloud migration, network modernization, cybersecurity integration, and facilities management, reflecting deep technical familiarity with DoD’s digital transformation initiatives and the need for agile, secure, and scalable IT infrastructure.