Kirsten M O'Brien

Kirsten M. O’Brien serves as a Contracting Officer within the Contracting and Procurement office of the Transportation Security Administration under the Department of Homeland Security. She is responsible for managing the acquisition lifecycle of mission-critical security technologies, including explosive detection systems, irradiation equipment, and GPS-enabled rail monitoring solutions. Her work directly supports the agency’s mandate to enhance aviation and transit security through the procurement of advanced, high-integrity systems. O’Brien handles complex, high-stakes acquisitions under FAR Part 13 and Part 15, often involving technical evaluations, source selection, and contract administration for both commercial and custom-developed solutions. While specific contractor names are not publicly disclosed, O’Brien maintains a robust network of vendors specializing in cybersecurity services, custom software development, and infrastructure support. She engages with a diverse pool of contractors—from large systems integrators to niche technology providers—ensuring competitive, compliant, and performance-driven outcomes. Her contracting approach emphasizes risk mitigation, technical feasibility, and lifecycle cost analysis, fostering long-term vendor partnerships grounded in transparency and accountability. O’Brien demonstrates a strong commitment to socioeconomic goals, with 20% of her portfolio allocated to Total Small Business Set-Asides under FAR 19.5. Though the majority of her acquisitions are open competition, she actively prioritizes small business participation, particularly among firms certified under standard small business programs. Her contracting patterns reflect a balanced approach that ensures market competitiveness while advancing federal small business utilization objectives. Her primary NAICS focus areas include security systems services, custom computer programming, computing infrastructure provisioning, and computer systems design—all aligned with the TSA’s digital and physical security modernization goals. She routinely procures cloud-based platforms, real-time data processing systems, and integrated security software, demonstrating deep expertise in cybersecurity, software-defined infrastructure, and mission-critical IT environments.