Mentor and provide advanced guidance to Buyer II, Buyer I, Purchasing Assistants, Material Handlers/Logistics personnel, and other team members on procurement best practices, negotiations, Prefab coordination, compliance considerations, strategic sourcing, and on-site material handling/distribution expectations. This role drives proactive sourcing of materials, equipment, and services, including prefabricated and kitted items through advanced planning, category management, alignment with master agreements, and integration with Prefab, project, and field teams.