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Fernando Villalba

@fernandovillalba

Message

Full Stack Developer building enterprise Oracle APEX/PLSQL systems and cross-platform Flutter apps.

Paraguay

Message

What I'm looking for

I’m looking to build performance-driven, scalable enterprise products—Oracle APEX/PLSQL, clean REST APIs, and cross-platform apps. I want a team that values maintainable code and ships reliable features end to end.

I’m a Full Stack Developer with 2+ years building and maintaining enterprise systems on Oracle. I specialize in PL/SQL development, Oracle APEX applications, and REST API design with Oracle ORDS, plus reporting that keeps business operations reliable and on time.

I’ve shipped cross-platform mobile apps with Flutter—published on both Google Play and the Apple App Store—and I focus on performance, scalability, and clean, maintainable solutions. In my current role, I build Oracle APEX and PL/SQL backends, deliver REST APIs with Oracle ORDS, integrate with Node.js/Express for pipelines, and implement reporting with JasperReports/JasperServer, including complex modules like bank reconciliation with fuzzy matching.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

Mi Tierra S.A.

Jan 2024 - Present (2 years 5 months)

Built and maintained Oracle APEX applications using PL/SQL and delivered a REST API layer with Oracle ORDS for the corporate mobile app. Shipped the Flutter app for Android/iOS, implemented Jasper reporting, and created a PL/SQL bank reconciliation module with MT940 parsing and fuzzy matching while optimizing SQL for high-volume financial tables.

Apex Pl SQL REST APIs Express Flutter Dart Jasper Reports SQL Optimization