At Nueca Technologies, I build native iOS, iPadOS, and macOS/Catalyst applications for offline POS, payments, and donation journeys. I own seven of ten POS feature domains, including BIR-compliant VAT and discount computation, role-based access, secure persistence, image handling, and financial reporting.
I've delivered SwiftUI payment flows with REST API integration, JWT refresh-token storage in Keychain, recovery UI, and infinite-scroll pagination. As the primary iOS–backend liaison, I resolve API contract and documentation issues that unblock production work.
I improve application quality through Xcode Instruments, Swift Concurrency, VIPER, and Swift Package Manager. I cut test execution time by 50% and transient allocations by 76%, while also rebuilding Realm date storage for safer sorting and lower local database storage.
Beyond mobile development, I built PathSentinel, a CNN-based road infrastructure classifier that achieved 95% precision and recall, and CasurecoBot, a Python automation service for distributing utility news. I also mentor interns through SwiftUI, MVVM, Git, persistence, networking, and API integration.
