Analyze A/B tests across models, configurations, and customer segments to quantify business impact and guide ML development. Investigate training data quality, model performance trends, and feature effectiveness at scale. Investigate how ranking changes affect user behavior and conversion metrics. Uncover usage patterns, anomalies, and opportunities for optimization using SQL, Python, and Spark. Define new metrics to measure search relevance, personalization, and model performance. Ensure metrics align with user experience and business goals through rigorous validation. Create scalable dashboards and reporting tools for product, engineering, and leadership teams. Develop debugging tools to explain ranking decisions and identify performance issues. Partner cross-functionally to design experiments, validate hypotheses, and communicate insights. Influence product roadmap and ML strategy through data storytelling.