Discover our latest articles and guides on Data Engineering
Where freelance data engineer contracts are posted in 2026, what day rates look like in France and the UK, how remote the missions are, and what mission interviews test.
Where data engineer jobs are posted in 2026, what the postings ask for, salary medians in the US, France, the UK and Germany, remote share and interview prep.
ETL and ELT represent two approaches to data pipeline architecture. This comparison breaks down when to use each pattern, the tools that support them, and the interview questions data engineers face about pipeline design.
Master Great Expectations (GX) 1.22 for data quality validation. Covers Expectation Suites, Checkpoints, Data Docs, and common data engineering interview questions with practical Python examples.
Compare Apache Beam 2.76 and Spark 4.2 for data pipeline development. Covers portability, performance, real interview questions, and when to choose each framework.
Master Apache Flink 2.3 stream processing with event time semantics, watermarks, and windowing. Prepare for data engineering interviews with real-world examples.