William Cosey, BSChE, FSFPE, PE, CFPS
At Cosey Engineering & Consulting LLC, we specialize in delivering technically rigorous, code-compliant fire protection solutions that safeguard lives, property, and mission-critical operations. Our firm was founded by William Cosey, a licensed Professional Engineer (P.E.), a Certified Fire Protection Specialist (CFPS), and a distinguished Fellow of the Society of Fire Protection Engineers (SFPE), with 36 years of proven expertise in chemical engineering, fire protection engineering, and risk mitigation across global industries. The SFPE Fellow designation is awarded to only a handful of individuals each year—just 7 new Fellows were named globally in 2025, including William Cosey himself.
A graduate of the University of Tennessee in Chemical Engineering and one of only a few professionals worldwide to hold the combined credentials of FSFPE, PE, CFPS, Q Clearance, and over 36 years of federal and fire protection engineering experience.
William has played an influential role in shaping the national standards and fire codes that govern the industry, serving on numerous technical committees and advisory boards. His leadership as a Technical Engineering Manager at high-security laboratory and nuclear sites has cultivated unmatched precision in navigating complex regulatory environments and delivering safety-first solutions in high-stakes settings.
Whether you’re launching a new construction project, upgrading legacy fire protection infrastructure, or navigating intricate compliance challenges, we offer trusted engineering guidance and custom-tailored solutions to meet your operational needs with confidence and clarity.
Donna Cosey, MBA-DM
Donna Cosey serves as Strategic Business Administrator for Cosey Engineering & Consulting LLC. She brings deep expertise in financial operations, brand development, and procurement strategy. Holding a Bachelors Degree in Business Management and an MBA in Digital Marketing, along with experience as a high school educator in entrepreneurship and personal finance, credentials in bookkeeping, and creative administration, she drives the firm’s operational excellence as well as public sector growth. Donna manages financial reporting, reconciliation, pricing strategy, oversees marketing, branded outreach, and many client communications. Donna leads procurement registrations, capability statement development, and compliance tracking. Her interdisciplinary leadership positions the firm as a responsive, credentialed provider of fire protection engineering services—serving county agencies, federal clients, and secure facilities with clarity, precision, and community-minded professionalism. Business services are personally led by Donna Cosey. Explore our offerings on the Business Services link and discover how we turn vision into action.