Previous Projects

Large Telecom Database System

Lead Designer and Developer for a comprehensive telecommunications database system with over 700 tables, several of which have many millions of rows.

Technologies: Oracle

Duration: 17 years

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Healthcare Data Warehouse

Designed and implemented a data warehouse solution integrating patient records from multiple hospital systems. Created ETL processes to transform and load over 120 million rows of historical data from CSV files.

Technologies: Oracle, Python, Talend

Duration: 12 months

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Financial Services Performance Optimization

Led performance tuning initiative for a major financial institution's trading platform. Optimized critical queries and implemented indexing strategy, reducing average response time from 15 seconds to under 2 seconds.

Technologies: SQL Server, Query Store, Custom Monitoring

Duration: 8 months

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