Built a multi-page Power BI dashboard consolidating retail media ad performance (Instacart Ads, Walmart Connect, CitrusAd) into one executive view. Features a true weighted ROAS measure (SUM(Sales)/SUM(Spend), not an averaged ratio — a common calc error), budget pacing alerts, a revenue bridge waterfall breaking down period-over-period change by platform, campaign drill-through with conditional formatting, and anomaly detection on daily spend. Delivered as a customizable, client-ready template.