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Jacek Laskowski

Jacek Laskowski
Jacek is an IT freelancer specializing in Apache Spark, Delta Lake, Apache Kafka and Kafka Streams (with brief forays into a wider data engineering space, e.g. Presto). Jacek offers software development and consultancy services with very hands-on in-depth workshops and mentoring. He is best known by his online books available free of charge at https://books.japila.pl/.