Participates in pre-bid meetings, site visits, negotiations, and bid strategy sessions to clarify requirements, resolve discrepancies, and assign scopes to trade contractors; reviews scopes of work with subcontractors and suppliers pre- and post-bid. Collaborates with project managers, engineers, subcontractors, architects, owners, vendors, and other stakeholders to ensure estimates align with project requirements and schedules; prepares and presents cost estimates, proposals, and bid documents.