Deddy Rumapea Email & Phone Number

Singapore

Jakarta, Id

Singapore

• Led Android app projects, designing and developing new features, conducting code reviews to maintain code quality standards, handling app deployment, conducting architecture reviews, and crafting user guide documents• Refactored 186+ screens from XML Views to Jetpack Compose, reducing technical debt and improving maintainability• Reduced build times by 65% through the migration from Kapt to KSP, improving developer productivity• Introduced code obfuscation and minification, resulting in a 60% app size reduction and enhanced app protection• Resolved critical bugs and managed app deployment to the Play Store within the first month of onboarding• Technologies used: Kotlin, Jetpack Compose, Coroutines, Flow, Dagger Hilt, Retrofit, Firebase, JUnit, MockK, Git

• Co-founded a social startup promoting environmental awareness through campaigns advocating for a green lifestyle• Secured $10,000 in incubation funding from Google and Kemendikbudristek, supported by University of Indonesia• Led the development of the Android app with 500+ downloads on the Google Play Store and an average rating of 4.0/5• Implemented key features including forums with user-generated content, cloud messaging/push notifications using Firebase Cloud Messaging, an authentication feature using Firebase Auth, and an AI computer vision feature using MLKit• Developed automation for UI testing with Espresso and unit testing with JUnit and Mockito to ensure app reliability

Indonesia

Led 8 training sessions with a total of 300+ students, covering topics such as functional and object-oriented programming (OOP) using Kotlin, SOLID programming principles, and Android fundamentals

• Directed a consultation group of 25+ students, delivering study assistance and debugging guidance in Java and Kotlin• Mentored students through the completion of their final course projects, providing hands-on support in troubleshooting