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Cloud Data Engineer building scalable ETL pipelines
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Data Engineer
Self Employed • Freelance
Jul 2022 - Present • 3 yrs 10 mos
Engineered scalable ETL pipelines and Medallion architectures using AWS (S3, Glue, Athena) and PySpark. Designed relational databases in PostgreSQL and optimized complex SQL queries (CTEs, Window Functions) to process millions of rows. Specialized in reducing data processing time and transforming unstructured logs into robust, query-ready data lakes.