Experience
4+ years building backend systems, integrations, and automation in high-stakes corporate environments.
IT Application Analyst
Axalta Coating Systems
- Design and maintain backend integration layers between SAP, Oracle, and fiscal systems (NF-e/DFe) in a critical production environment
- Implement Java backend logic for Brazil's tax reform (IBS, CBS, IS), enabling compliance and supporting high-volume invoice processing
- Build and maintain data validation and integration flows ensuring consistency across financial, tax, and operational systems
- Investigate and resolve complex production issues across middleware, integrations, and data inconsistencies with root cause analysis
- Develop Python automation scripts and SQL queries to reduce manual processing, improve data accuracy, and increase operational efficiency
- Support cross-functional teams (Tax, Finance, Logistics) ensuring system stability and clear technical communication
JavaOracle DBPythonSAPPL/SQLNF-eREST APIsSQL
Freelance Software Engineer — Backend
Freelance
- Developed Java backend logic focused on data processing and business rule validation
- Implemented structured data handling for automated workflows with reliable execution
- Performed debugging, adjustments, and refinements to ensure correctness under production conditions
JavaSQLBackend
Freelance — Java Legacy System
Freelance
- Delivered targeted improvements to an existing Java legacy system to support new fiscal middleware requirements
- Adjusted validation logic, fixed integration issues, and ensured compatibility with updated processing rules
- All changes delivered within scope, maintaining system stability and correctness
JavaFiscal MiddlewareIntegration