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I’m Seth Aldwin Tolentino, a mobile developer focused on building scalable, maintainable Android apps in Kotlin and Java. I’ve migrated legacy Java components to Kotlin, improved build stability, and helped teams ship faster by modernizing architecture, tooling, and CI/CD practices. Across my roles—especially at Ropali Corporation—I’ve designed and delivered multiple production Android applications using Jetpack Compose, MVVM, Clean Architecture, Room, Retrofit, Hilt, coroutines/Flow, and robust Firebase backends. I enjoy creating smooth, user-friendly UIs with Material 3, optimizing performance, and turning complex workflows into reliable apps that support real-time operations.…I’m Seth Aldwin Tolentino, a mobile developer focused on building scalable, maintainable Android apps in Kotlin and Java. I’ve migrated legacy Java components to Kotlin, improved build stability, and helped teams ship faster by modernizing architecture, tooling, and CI/CD practices. Across my roles—especially at Ropali Corporation—I’ve designed and delivered multiple production Android applications using Jetpack Compose, MVVM, Clean Architecture, Room, Retrofit, Hilt, coroutines/Flow, and robust Firebase backends. I enjoy creating smooth, user-friendly UIs with Material 3, optimizing performance, and turning complex workflows into reliable apps that support real-time operations.

Seth Aldwin Tolentino

App Developer, Software Engineer, Back-End Developer, +3

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I’m Seth Aldwin Tolentino, a mobile developer focused on building scalable, maintainable Android apps in Kotlin and Java. I’ve migrated legacy Java components to Kotlin, improved build stability, and helped teams ship faster by modernizing architecture, tooling, and CI/CD practices. Across my roles—especially at Ropali Corporation—I’ve designed and delivered multiple production Android applications using Jetpack Compose, MVVM, Clean Architecture, Room, Retrofit, Hilt, coroutines/Flow, and robust Firebase backends. I enjoy creating smooth, user-friendly UIs with Material 3, optimizing performance, and turning complex workflows into reliable apps that support real-time operations.…I’m Seth Aldwin Tolentino, a mobile developer focused on building scalable, maintainable Android apps in Kotlin and Java. I’ve migrated legacy Java components to Kotlin, improved build stability, and helped teams ship faster by modernizing architecture, tooling, and CI/CD practices. Across my roles—especially at Ropali Corporation—I’ve designed and delivered multiple production Android applications using Jetpack Compose, MVVM, Clean Architecture, Room, Retrofit, Hilt, coroutines/Flow, and robust Firebase backends. I enjoy creating smooth, user-friendly UIs with Material 3, optimizing performance, and turning complex workflows into reliable apps that support real-time operations.

Available to hire

I’m Seth Aldwin Tolentino, a mobile developer focused on building scalable, maintainable Android apps in Kotlin and Java. I’ve migrated legacy Java components to Kotlin, improved build stability, and helped teams ship faster by modernizing architecture, tooling, and CI/CD practices.

Across my roles—especially at Ropali Corporation—I’ve designed and delivered multiple production Android applications using Jetpack Compose, MVVM, Clean Architecture, Room, Retrofit, Hilt, coroutines/Flow, and robust Firebase backends. I enjoy creating smooth, user-friendly UIs with Material 3, optimizing performance, and turning complex workflows into reliable apps that support real-time operations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Beginner

Language

English

Advanced

Javanese

Advanced

Work Experience

Android Developer at Ropali Corporation

January 1, 2023 - Present

Engineered a full-featured coffee shop e-commerce Android app using Jetpack Compose and Material 3, improving internal QA usability scores by 50% and reducing user error reporting by simplifying flows and responsiveness. Built Kotlin-based field operations apps under Ropali’s LUPA initiative by combining Google Maps (geolocation), CameraX, and ML Kit to automate on-site data capture, achieving 40% faster field reporting and eliminating manual entry errors across 5 regional branches. Implemented and maintained a 3-app Android POS ecosystem for Dino Discovery Park supporting ticketing, queue management, cash payments, and daily remittance tracking (500+ visitors/day), reducing checkout time by 45% and end-of-day reconciliation time by 60%. Applied scalable MVVM architecture with Kotlin Coroutines and Flow for asynchronous state management and real-time data handling, ensuring maintainable code quality and smoother user experiences.

Android Developer (Mobile E-commerce Native App – Personal Projects) at Steam & Bean

June 1, 2022 - October 20, 2022

Built a responsive mobile e-commerce application with Material Design alignment and performance improvements. Implemented coroutine-based async flows with LiveData, reduced UI lag, and simplified background processing across modules. Integrated Firebase services for secure auth, persistent data storage, and analytics, while following a modular architecture using layered design and repository pattern. Prepared the app for production using release-focused improvements (Room migrations, crash reporting, and billing integration where applicable).

Junior Android Developer at AIX (Personal Project)

June 1, 2022 - October 20, 2022

Developed and maintained an e-commerce mobile app, aligning UI/UX with Material Design, improving usability and reducing QA rework. Implemented Kotlin coroutines and LiveData for async state handling, optimized UI responsiveness, and improved background task management across app modules. Designed modular XML layouts and shared patterns to reduce layout redundancy, applied Agile/Scrum practices with Jira, and improved delivery cadence. Built reusable components and implemented core e-commerce features with Firebase backend integration and production-readiness improvements such as crash reporting and store release preparation.

Junior Android Developer at AIX

June 1, 2022 - October 20, 2022

Delivered responsive, Material-aligned mobile e-commerce features for a native app personal project, reducing QA rework by 25%. Implemented Kotlin Coroutines and LiveData for asynchronous data flows, cutting UI lag by 35% and simplifying background task handling across multiple app modules. Applied Agile/Scrum workflows using Jira to improve sprint visibility and reduce delivery delays by 20% through proactive backlog management. Designed modular XML layouts aligned with Material Design guidelines, improving UI reusability and reducing layout redundancy by 30% across client projects, and prototyped shared modules in Kotlin Multiplatform Mobile (KMM) to improve code reuse between Android and iOS. Prepared the project for Google Play release with production-focused improvements (e.g., Room migrations, crash reporting) and used Work Manager, MVVM, and Clean Architecture practices for stable offline-first behavior.