This Data Engineering Interview Preparation Plan is tailored for aspiring and mid-level professionals targeting roles at product-based companies. Instead of overwhelming you with scattered resources, it provides a focused, round-wise roadmap highlighting what to study and why it matters. Based on insights from 40+ interviews at top product companies, this plan prioritizes high-impact topics that actually get asked — helping you cut through the noise and prepare with purpose. Ideal for anyone looking to crack real-world technical interviews with clarity and confidence.