Sean A Barbosa

Sean A. Barbosa serves as a Contract Specialist responsible for managing the full lifecycle of federal acquisitions, from requirements validation and market research through contract award and administration. He plays a critical role in ensuring compliance with the Federal Acquisition Regulation (FAR) and supports the agency’s mission by delivering mission-critical equipment and technical services through transparent, competitive processes. His portfolio primarily encompasses complex procurements in aerospace systems, industrial maintenance, and laboratory instrumentation, requiring deep technical understanding and rigorous source selection methodologies. Barbosa works with a diverse range of contractors, including Tier 1 manufacturers of aircraft components and specialized industrial service providers. While no single contractor dominates his portfolio, he routinely engages with firms possessing AS9100 and ISO 9001 certifications, as well as those holding relevant ITAR and EAR compliance credentials. His contracting approach emphasizes performance-based outcomes, clear statement of work development, and post-award oversight to ensure contractor accountability and mission readiness. His procurement patterns reflect a strong preference for open competition, with 95.7% of acquisitions conducted without set-asides, indicating a focus on maximizing value through broad market engagement. The remaining 4.3% are awarded under Total Small Business Set-Asides (FAR 19.5), demonstrating a measured but intentional commitment to small business participation without compromising competitive integrity or mission requirements. Barbosa’s primary procurement focus lies in NAICS 336413—Other Aircraft Parts and Auxiliary Equipment Manufacturing—reflecting deep expertise in aerospace subsystems, avionics integration, and flight-critical components. He also regularly procures plumbing, heating, and air-conditioning services (NAICS 238220), commercial and industrial machinery repair (NAICS 811310), and analytical laboratory instruments (NAICS 334516), showcasing a technical breadth that spans manufacturing, maintenance, and scientific instrumentation sectors. His work demands precision in technical specification development and rigorous evaluation of supplier capability and quality assurance systems.