Senior Android Developer with 10+ years of experience engineering high-performance native applications. Proven track record from scalable architecture to end-to-end cloud infrastructure and live Play Store production.
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Senior Android Developer with deep, production-level experience building and scaling robust applications using Kotlin and Java. I focus on developing clean, well-architected mobile solutions that meet complex user needs. From initial concept to market delivery, I care about writing simple, maintainable code that ensures long-term application health and performance.
Specialized in designing clean, maintainable codebases using MVVM, Clean Architecture, and Jetpack Compose. Beyond enterprise platforms, I architect end-to-end solutions—taking projects from local concept through Spring Boot backend deployment on DigitalOcean right to live Google Play production.
Experienced Senior Android Developer with deep expertise across the native Android ecosystem. Proven ability to design and deliver high-performance applications using clean, scalable architectures and modern development practices. Skilled at integrating robust backend services and continuously expanding my engineering proficiency with modern frameworks like Jetpack Compose and Kotlin Multiplatform.
Engineering high-performance native applications using Kotlin, Jetpack Compose, and Kotlin Multiplatform (KMP). Focused on robust MVVM, Clean Architecture, and reactive UI patterns that ensure fluid user experiences and maintainable, testable codebases.
Experienced in provisioning and managing Linux VPS environments, configuring secure domain routing, and hosting production-grade REST APIs with absolute reliability.
Expertise in navigating Google Play Console policies, managing production signing keys, setting up automated distribution tracks, and implementing compliance policies.
Grounded in core computer science fundamentals—including advanced data structures, algorithmic efficiency, and object-oriented design patterns. Leverages modern development tooling, Git version control, and continuous integration workflows to accelerate delivery cycles.
High-performance native Android apps using Java, Kotlin, and Clean Architecture. Experienced in REST APIs, Firebase, Maps, video processing, and real-time features.
Scalable multiplatform apps with advanced state management, native integrations, and custom package development — including extending existing packages.
Building robust server-side logic using Kotlin, Spring Boot, and MongoDB. Designing RESTful architectures, managing cloud databases, and handling end-to-end data flow from server to mobile client.
Connecting apps with secure APIs using REST — optimizing performance, caching, pagination, and real-time synchronization.
Authentication, Firestore, Realtime DB, Storage, Cloud Messaging, Crashlytics, and Analytics for scalable mobile applications.
Secure payments with Stripe and Xendit with proper validation and subscription flows. Secure in-app purchases and tiered subscription monetization using Google Play Billing and RevenueCat. Successfully integrated AdMob monetization with live ad serving.
Video playback and streaming using ExoPlayer.
WebSockets, Pushers, and event-driven architecture for chat like Sendbird, notifications, and collaboration tools.
Map-based apps with navigation, route drawing, live tracking, and location-based services.
A collection of production apps I’ve built and delivered — from white-label platforms and business solutions to consumer applications released on the Play Store.
A comprehensive full-stack property management application built for independent landlords. Features real-time utility tracking, automated monthly invoicing, multi-tenant ledger architecture, and integrated AdMob monetization, deployed live on the Google Play Store.
MetroMart – Fast grocery and essentials delivery from S&R and partner malls, with orders delivered in as fast as 2 hours right to your doorstep.
This application is designed specifically for use by MetroMart Riders and Personal Shoppers, ensuring tailored support and functionality for these users.
This MetroMart Merchant application was created to manage orders accordingly. We are partnered with over 500+ local merchants who also aim to provide quality services and grocery deliveries right into your doorsteps.
Filipino Recipe is a comprehensive recipe management application built from the ground up using native Jetpack Compose. Designed to simplify the cooking experience, the app features an intuitive, filtered search system, a robust favorites management module, and an elegant detail view that guides users through preparation with ease.
A dedicated mobile client built to master modern Android UI engineering. Features reactive pagination, smooth type-safe Compose navigation, local data persistence with DataStore, and MVVM Clean Architecture powered by the TMDB API.
I love meeting new people from around the world! Hit me up to talk about project ideas and programming — find me on any platform below, or drop me an email.
juliusvillagracia.04@gmail.com