Oracle PL/SQL and backend developer with real ERP experience. For over 2.5 years I've been shipping fixes and features to a production Oracle ERP used by 25+ companies in manufacturing, distribution, retail, services and education: 388 maintenance requests delivered, with a median turnaround of 3–4 days. Now I'm also building with Node.js and C#.
📍 São Bernardo do Campo, Brazil · 🌎 Open to remote and hybrid roles · 🗣️ Portuguese (native), English (improving daily)
- Production database work: Oracle 19c PL/SQL packages, triggers and views, plus Oracle Forms and Reports screens, in an ERP that covers invoicing, payables and receivables, inventory, purchasing, tax and payroll.
- Root cause, not workarounds: I trace customer tickets down to the database and ship minimal, surgical changes to legacy code, with the original backed up and the test documented.
- Business rules that are hard to get right: Brazilian tax and banking formats (NF-e, CT-e, SPED, CNAB, ICMS-ST and the 2026 tax reform) as they actually run inside an ERP.
- AI that is safe to put in a product: I designed a natural-language query feature for the ERP where the model returns only validated filters, never free-form SQL.
| Project | What it shows | Stack |
|---|---|---|
| cnpj-alfanumerico-plsql | Validation and check digits for Brazil's new alphanumeric CNPJ, plus dictionary scripts that find the NUMBER columns and code that will break in a legacy Oracle system. 16 utPLSQL tests on a real Oracle in CI | PL/SQL · Oracle · utPLSQL · GitHub Actions |
| aprova-api | Purchase orders with multi-level approval by amount: segregation of duties, audit trail, role-based JWT auth and 33 automated tests | Node.js · Express 5 · SQLite · Docker · GitHub Actions |
| estoque-api | Inventory control with moving weighted-average cost, per-warehouse stock, a full stock ledger and optimistic concurrency, covered by 24 tests | C# · .NET 10 · EF Core · Docker · GitHub Actions |
All three come from problems I deal with at work. I rebuilt them from scratch, with fictional data.
Databases:
Backend:
Oracle front end:
AI and automation:
Tooling:
- Building backend projects in Node.js and C# on top of what I know from ERP work
- Studying English every day
- Next: a Java / Spring Boot project and deploying to the cloud
🇧🇷 Prefere português? Pode me chamar em português.