At Serino Systems, Inc, I develop and maintain Android payment and POS applications for enterprise terminals, including Sunmi, Castles, Verifone, and Ingenico devices. I implement card-processing flows for in-store and field transactions.
I work with Java and Kotlin across production payment systems, and manage builds, releases, and versioning using Azure and CI/CD pipelines. I also use GitHub Copilot in my daily development workflow.
At Bewell Nutraceuticals Corp, I served as the sole Android developer for a field application used by medical representatives. I developed visit and sample tracking and implemented transaction-count tracking as a performance metric.
At NTEK Systems, I developed IoT and location-aware applications, including a BLE and Wi-Fi door-lock system and a student bus-tracking app with real-time locations and bus-speed alerts. My work also includes maintaining mobile applications at Barapido, Inc and projects such as P-Ordering App and PFS Warehouse.
