Telefónica Germany — PostgreSQL performance and modernization
Architecture and optimization for large-scale telecom operations using PostgreSQL and PL/SQL. Work included indexing, partitioning, query refactoring, migration support, server relocation, and performance stabilization.
- 70% reduction in month-end processing and Power BI dataset refresh time.
- 80% less manual effort for log analysis/reporting through Python automation.
- Near-zero downtime during server moves and stabilization.