The Cost Accountant owns job and project costing, standard costs, variance analysis, inventory valuation, WIP, and month-end COGM and COGS reporting. Responsibilities include reconciling estimated and actual costs, maintaining BOM and cost integrity, supporting audits, analyzing margins and operational KPIs, and partnering with estimating, production, purchasing, and project teams. The role also supports bid reviews, make-versus-buy analysis, controls, and manufacturing cost improvements.