Guoying Wang

I am a senior data engineer with extensive experience building and operating large-scale batch and streaming ETL pipelines for billions of events daily, supporting multi-petabyte datasets and 1.8B+ active devices worldwide. I design Spark (Scala/Python) and Hadoop-based systems, implement privacy-preserving aggregation workflows, and optimize distributed workloads to reduce compute costs and improve availability.

I have a proven record introducing automated data quality checks, schema validation, and monitoring that cut incidents and improved recovery times, while collaborating with product, privacy, and legal teams to translate regulatory requirements into enforceable controls. I bring strong production operations experience, containerized deployment of Spark jobs, and a focus on scalable data modeling for analytics at global scale.