Balaji Grandhi
Professional Summary
Data Engineer with 0 years of experience specializing in PySpark, Azure Data Factory, Azure Synapse Analytics, SQL and building ETL/ELT pipelines on Azure. Delivered Medallion Architecture pipelines and analytics-ready datasets improving enterprise data availability and reporting performance for business intelligence teams.
Technical Skills
Work Experience
- Engineered end-to-end ETL/ELT pipelines using Azure Data Factory, PySpark, and Azure Synapse Analytics to integrate LMS and CMS sources, improving enterprise data availability by 35%.
- Designed and implemented Medallion Architecture pipelines on ADLS Gen2 with Databricks to standardize ingestion, bronze/silver/gold transformations, and delivery of analytics-ready datasets for reporting teams.
- Optimized PySpark transformation workflows through Parquet conversion and partitioning strategies, reducing batch processing time and improving pipeline throughput.
- Implemented Azure Synapse SQL stored procedures, views, CTEs, and window functions to refactor analytical queries and improve query execution and reporting performance by 35%.
- Collaborated with data engineers and BI developers to design dimensional star-schema models and deliver validated datasets for Power BI, enabling faster self-service reporting for business users.
- Established version-control and pipeline validation practices using Git and SQL-based data quality checks to improve pipeline reliability and reduce production data incidents.
Projects
- Architected an LMS Analytics Data Warehouse using Azure SQL, Azure Synapse Analytics, Python, ETL pipelines and Power BI to centralize learner activity and enrollment data, reducing reporting latency.
- Developed end-to-end ETL pipelines to ingest, cleanse, transform, and load learner activity and enrollment data from multiple source systems into a centralized warehouse.
- Designed star-schema data models with fact and dimension tables and optimized aggregations, indexing, and SQL queries to improve analytical performance by 45%.
- Delivered interactive Power BI dashboards to analyze learner engagement, course completion, and instructor performance, enabling faster business intelligence and data-driven decisions.
Education
Certifications
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