Apply a broad and deep subject matter expertise in category management, market dynamics, and economic and industry trends impacting Ameren to support the development of appropriate category strategies; Lead cross-functional teams to build comprehensive category strategies utilizing market intelligence, demand management, sustainability, supplier diversity and total cost of ownership, with follow through metrics as required to assure performance, supply continuity and manage risk; Execute sourcing strategies, from proposal development and solicitation, to contract negotiation, to recommending solutions and contract execution; Partner with suppliers to conduct cost assessments with the goal of reducing costs and identifying improvements drive contract utilization with effective implementation plans, metrics and reporting. Maintain company-wide demand profiles and external supply and demand MI information; Interpret MI to drive category strategies and provide direction to stakeholders (i.e. raising changes in market conditions which could have an impact to cost or schedule); Understand the marketplace for assigned category(ies), including industry structure and new and non-traditional suppliers; Build cost models, identifying value and cost drivers, to drive for better understanding of costs and results during supplier negotiations.