Bartosz KoniecznyBartosz is a freelance data engineer enthusiast who has been coding for 15+ years. He has held various senior hands-on positions that helped him work on many data engineering problems, such as sessionization, data ingestion, data cleansing, ordered dta processing, or data migration. He enjoys solving data challenges with public cloud services and Open Source technologies, especially Apache Spark, Apache Kafka, Apache Airflow, and Delta Lake. You can contact him at contact@waitingforcode.com. Besides that, you can read his blog posts at waitingforcode.com, or improve your data engineering skills with one of his courses or training. Bartosz is also an occasional speaker at conferences and meetups, including Data+AI Summit, Big Data Technology Warsaw Summit, or NDC Porto. Read More Read Less