Alexander Dudko

Development and optimization of an enterprise-wide data warehouse based on Oracle, focusing on ETL processes (Pentaho, PL/SQL) and reporting (OBIEE, Oracle Analytics Server). Achievements: Successful development of a stable backend architecture and implementation of complex data flows that enabled data-driven decisions in various business units. Implementation and establishment of Apache Airflow as a central tool for ETL monitoring and orchestration. Conception and implementation of a sequential loading procedure to replace the previous daily batch, leading to higher data freshness and process stability.

At Eurofins, I was responsible for the further development and optimization of existing ETL pipelines in the Microsoft SQL Server environment. I analyzed and improved data flows and prepared them for further processing. Additionally, I designed and developed interactive Power BI dashboards for visualizing operational and strategic KPIs. Close collaboration with business departments enabled targeted implementation of reporting requirements and improved data quality.

At Otto, I was responsible for the maintenance and further development of the company-wide data warehouse. A key focus was on controlling and optimizing existing ETL processes, as well as integrating new data sources from various operational systems. Through close coordination with business departments, relevant data was provided promptly, and the data foundation was continuously expanded. The measures implemented contributed to improved data availability, higher process security, and faster analysis cycles.