Experience
Six years building mobile and web products across fintech, ERP, and consumer apps.
PBS El Salvador
Senior Mobile Developer
Lead mobile engineer across Android, iOS, and Flutter, owning the full lifecycle of multiple consumer-facing apps from architecture decisions to App Store and Play Store releases. Introduced a shared Flutter module strategy that cut duplicate logic between platforms by roughly 60%, and established code review practices that brought the team's average review cycle from three days down to one. Also serve as the technical reference for mobile decisions across the organization, collaborating directly with product and QA to ship faster without accumulating debt.
ThinkForward
Mid Full-Stack Developer
Principal developer on a multi-tenant ERP system built from scratch with ASP.NET Core, Entity Framework, and SQL Server. Designed the database schema and API surface that serves several independent companies from a single codebase, using tenant-aware middleware and row-level data isolation. Delivered the Razor-based frontend alongside the backend, writing vanilla JavaScript for dynamic UI interactions without introducing a heavy framework. The system went from zero to production in under eight months and is still in active daily use.
Serfinsa
Mid Mobile Developer
Android developer on a fintech platform serving thousands of daily transactions, working with Kotlin and early Jetpack Compose. Took ownership of the payments and transfers screens, refactoring a fragile XML-based UI to a composable architecture that made new flows significantly faster to build and test. Collaborated with backend and security teams to implement biometric authentication and PCI-compliant session handling, and contributed to the internal component library that the team still uses today.
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