Ahmet Eren Yeşiltaş
Data Engineer @DHL Supply Chain
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WORK HISTORY
Data Engineer @DHL Supply Chain
Чикаго, IL, US
Built Azure Databricks pipelines with Delta Lake and Medallion architecture (Bronze/Silver/Gold) on ADLS Gen2 for global logistics and supply chain analytics• Developed PySpark and Spark SQL notebooks, improving pipeline performance by 60% using partition pruning, Z-Ordering, broadcast joins, and AQE• Implemented Unity Catalog governance with fine-grained access control, data lineage, and row/column-level security• Built Delta Live Tables pipelines with data quality expectations and schema enforcement, reducing data discrepancies by 80%• Designed metadata-driven Azure Data Factory pipelines for automated ingestion with incremental loads and CDC• Engineered real-time streaming pipelines using Databricks Structured Streaming and Auto Loader from Event Hubs• Optimized Databricks SQL Warehouses for BI workloads, reducing compute costs by 45% while maintaining SLAs• Orchestrated pipelines using Databricks Workflows and ADF with dependency management and automated alerting• Implemented Delta Sharing and governed data access across teams without data duplication• Established CI/CD with Azure DevOps and Databricks Asset Bundles for automated deployments and version control
EDUCATION
Istanbul Sabahattin Zaim University
Bilgisayar Mühendisliği
ABOUT AHMET EREN YEŞILTAŞ
I am a and graduate, specializing in building on Microsoft Azure and Databricks. With hands-on expertise in, and, I help organizations transform raw data into trusted insights:• (ADF, Synapse, Data Lake, SQL Pools, Event Hub, Stream Analytics)• (Delta Lake, Medallion Architecture, PySpark, MLflow, Structured Streaming)• (Data Modeling, DAX, Report Optimization, Row-Level Security, Paginated Reports)• & (CI/CD, Unity Catalog, Data Quality, Metadata Management, Security & Compliance)I am passionate about leveraging data engineering to turn complex datasets into meaningful insights that empower strategic decision-making. Throughout my career, I have successfully delivered, and - solutions that enable businesses to unlock the full potential of their data assets.Currently, I am dedicated to advancing - practices, driving innovation in and, and contributing to initiatives that seamlessly integrate, and.
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