Looking for a job

Filipe Ratão

@filiperato

Message

I optimize Oracle and PL/SQL banking systems, improving query performance on datasets exceeding 150M rows.

Portugal

Message

What I'm looking for

I'm looking to build high-performance database solutions for mission-critical, high-volume systems, with opportunities to apply SQL tuning, scalable data design, and ETL experience.

At Capgemini Portugal, I develop and maintain SQL and PL/SQL logic for core banking systems, improving critical query performance by up to 40% on datasets exceeding 150M rows.

I analyze execution plans, remove full table scans and inefficient joins, and implement indexing and partitioning strategies that support high-volume, mission-critical data.

I also contribute to ODI-based ETL pipelines and collaborate with the Bank of Portugal on regulatory requirements and data standards.

Previously at X-Evolution, I optimized MySQL queries by approximately 30% and delivered more than 50 analytical and operational reports for enterprise clients including Vodafone and EDP.

Experience

Work history, roles, and key accomplishments

Current

Oracle / PL-SQL Developer

Current

Capgemini Portugal

Jan 2023 - Present (3 years 8 months)

Improved performance of critical banking queries on datasets exceeding 150M+ rows, reducing execution time by up to 40% through execution plan analysis, indexing, and partitioning. Developed and maintained SQL and PL/SQL logic supporting core banking systems and collaborated with the Bank of Portugal to ensure regulatory alignment.

Oracle Pl SQL SQL Performance Tuning Execution Plan Analysis Indexing Partitioning ODI ETL

Database & Reporting Developer

X-Evolution

Jan 2021 - Jan 2023 (2 years)

Optimized MySQL queries, reducing execution time by approximately 30%. Delivered 50+ analytical and operational reports for enterprise clients including Vodafone and EDP.

MySQL SQL Data Modeling Reporting Data Validation