What Kamil demonstrated

Built an end-to-end profit-paradox analysis that framed hypotheses, audited the data, wrote correct SQL for category and regional margin analysis, and traced the profit decline to raw-material inflation, logistics inefficiency, and discounting. Delivered a clear recovery forecast and an executive-ready recommendation set focused on discount governance, logistics re-tendering, and input-cost control.

• Leakage-Free Structural Hypothesis Building
• Correct SQL Aggregation and Join Logic
• Pareto Root-Cause Analysis
• ROI-Aware Executive Communication