Data Engineer at Tesco Technology in Kraków who builds and optimizes data pipeline architecture for customer order, delivery, and supplier data supporting retail fulfillment. Day-to-day involves large-scale data processing with Apache Spark (Scala/Python), HDFS/CEPH S3 storage, Yarn, Hive/Kyuubi lakehouse, and Airflow scheduling, working in a hybrid model (3 days/week in the office).
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