Modules

Step-by-Step Guide to Acing Your AWS System Design Interview in 2025

Core Concepts Explained The AWS system design interview is one of the most challenging aspects of a data engineering interview. Unlike coding rounds, where you write specific functions or queries, system design is about architectural thinking, problem-solving, and decision-making. A common mistake candidates make is attempting to memorize system design patterns. This approach rarely works...

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The Ultimate PySpark Practice Questions

What Challenges Will This Module Solve? Mastering PySpark isn’t just about learning syntax — it’s about applying it to real-world data problems. Many engineers struggle with inefficient transformations, slow queries, and debugging distributed workloads. This module is designed to help you write optimized PySpark code, handle large datasets efficiently, and troubleshoot common issues. Key challenges...

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