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Data Engineer Interview Prep
Builds the pipelines and infrastructure that move and shape data for everyone downstream.
Topics
SQL & Databases
Query design, indexing, and the trade-offs behind relational data modeling.
Python Programming
Language internals and idioms interviewers probe for beyond basic syntax.
Data Engineering & Pipelines
Moving and shaping data reliably at scale: ETL/ELT, orchestration, warehousing, and data quality.
System Design
Designing systems that scale: trade-offs in architecture, storage, and reliability.