RONJIE DIAFANTE MAN-ON

Develop and maintain native Android and iOS mobile applications using Kotlin and Jetpack Compose and for iOS using Swift and SwiftUI. Build modular, testable features using MVVM and Clean Architecture to improve maintainability and support long-term scalability. Integrate REST APIs, authentication flows, local storage, and state management to deliver reliable user experiences. Collaborate with designers, backend engineers, and QA teams in Agile/Scrum workflows, including sprint planning, code reviews, testing, and release preparation. Troubleshoot issues, profile application behavior, and support quality assurance activities to help deliver stable production releases.

Developed and maintained mobile applications using Kotlin (Jetpack Compose) and Swift (SwiftUI) with MVVM architecture. Utilized Jetpack and SwiftUI libraries (Coroutines, ViewModel, Navigation, Room) for efficient, scalable development. Managed Play Store and App Store releases, handled bug fixes, and improved app stability. Collaborated with designers, backend engineers, and product teams to deliver seamless, high-quality user experiences across Android, iOS, iPadOS, and macOS platforms.

Operated and maintained industrial machinery, ensuring smooth and efficient production. Performed routine inspections, troubleshooting, and preventive maintenance to minimize downtime. Diagnosed and repaired mechanical and electrical issues to maintain optimal machine performance.