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Fedor Polyakov is a skilled Data Engineer with extensive experience in data mining, pipeline development, and ETL processes. Currently at BestDoctor since December 2022, Fedor focuses on mining leads, creating data marts and pipelines using Airflow, and optimizing data extraction and processing from various sources, contributing to significant cost reductions and performance improvements. Prior roles include a position at SberDevices, where Fedor developed an ETL tool for data uploads and established monitoring systems, and as a Junior Data Engineer at Qiwi, where Fedor configured batch replication and created enriched data marts.