Leo Christodoulou

Brett W. Giroir serves as Director of the Defense Sciences Office (DSO) at the Defense Advanced Research Projects Agency (DARPA), where he oversees the strategic formulation and execution of high-risk, high-reward research programs aimed at enabling transformative military capabilities. In this leadership role, he directs the acquisition of advanced scientific and engineering solutions across physical, biological, and computational domains, ensuring alignment with DARPA’s mission to maintain U.S. technological superiority. His procurement activities focus on early-stage R&D contracts, including basic and applied research, prototype development, and technology transition initiatives, typically structured as Other Transaction Authorities (OTAs) and cooperative agreements to foster innovation agility. Giroir collaborates closely with a select group of high-caliber contractors including AEROSPACE & COMMERCIAL TECHNOLOGIES, LLC, AMD INTERNATIONAL TECHNOLOGIES LLC, SYSTEMS & TECHNOLOGY RESEARCH LLC, and ABBOTT LABORATORIES INC., reflecting a preference for specialized firms with proven expertise in autonomous systems, bio-integrated technologies, advanced computing, and next-generation materials. His contracting patterns emphasize deep technical partnerships with organizations capable of rapid prototyping and interdisciplinary research, often engaging non-traditional defense vendors and academic-industry consortia to accelerate breakthrough innovation. His procurement portfolio exhibits a 100% no set-aside orientation, indicating a primary focus on technical merit and capability over socioeconomic categorization. This reflects DARPA’s mission-critical need to source the most advanced solutions regardless of vendor size or certification status, prioritizing innovation velocity and technical excellence over traditional small business set-asides. The technical domains under his purview span advanced materials, neurotechnologies, quantum systems, and bio-engineered platforms, with procurement activities aligned to NAICS categories including scientific R&D services, computer systems design, and medical device manufacturing. Giroir’s expertise lies in identifying and accelerating nascent technologies with dual-use potential, ensuring DARPA’s portfolio remains at the forefront of next-generation defense innovation.