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Top Rated Android engineer, 100% Job Success, 13 five-star contracts — most of them repeat clients who came back for the next feature. I build and rescue Android apps for startups and fintech companies, and I ship fast without leaving you a codebase you'll regret. My day job is fintech: Android Engineer at a licensed securities brokerage, and before that Bank Mandiri (Indonesia's largest bank) and Stockbit (one of Indonesia's biggest retail investing apps). I'm used to code that handles real money, real-time market data, and compliance review. On Upwork I bring that same standard to smaller teams. WHAT I DO FOR CLIENTS ▸ Build your Android MVP from Figma to Play Store — Kotlin, Jetpack Compose, Clean Architecture/MVVM, Firebase, REST. Recent: a full status-saver app built and launched in under 4 weeks; an accessibility-first calling app MVP in 5 days. ▸ Rescue and modernize existing apps — take over a messy or abandoned codebase, fix crashes, update target SDK / Play policy compliance, migrate Java → Kotlin and XML → Compose incrementally, clean up Gradle. Track record: cut a critical-bug backlog 40% on a legacy Java insurance app and extended its product life. ▸ Add the feature that unlocks revenue — Google Play Billing & RevenueCat subscriptions, AdMob, push notifications (FCM), Google Maps/location, in-app rating, WebSocket real-time data, payment SDKs. I've shipped my own subscription app on Google Play, so I know the store-review side too. ▸ Fintech & payments — trading/transaction flows, deposit/withdrawal UX, e-statements, secure auth, WebSocket + Protobuf real-time feeds (I led the first implementation at Stockbit), banking "smart branch" features, POS and payment-SDK integration on EDC devices (GoPay, chip-based). ▸ Flutter when it's the right call — BLoC, Dio, modular architecture; I revamped a legacy Java insurance CRM app into Flutter. HOW I WORK • Async-first and proactive: you get a short written update at every milestone, not silence until the deadline. • I use AI-assisted tooling in a disciplined way (I write about this on Stackademic / CodeToDeploy) — which is why I can turn a 2-day feature around in hours without sacrificing code review or tests. • I treat your codebase like my own: readable Kotlin, unit tests where they matter, no "it works on my machine". • Timezone: Jakarta (UTC+7). Comfortable overlapping with EU mornings and US evenings. WHAT CLIENTS SAY "One of the most skilled people I've worked with… executes very fast, with deep understanding and great attention to detail." "Smart, reliable, fast, and very detail oriented." "A great listener, and very solution-oriented. He works quickly and handles problems in an efficient and professional way." CREDENTIALS Google Associate Android Developer (certified) · 7+ years production Android · Author on Stackademic & CodeToDeploy (Compose, Paging 3, offline-first, FCM testing, Gradle convention plugins, AI-assisted dev) · Community speaker on AI-assisted Android workflows · Creator of palugada-cli (open-source dev tooling) NOT A FIT IF you want the cheapest bid or an iOS-only build. A GOOD FIT IF you want an engineer who has shipped in a regulated environment and will tell you honestly what's worth building. Send me your Figma, your repo, or a two-line idea — I'll come back with a practical plan and a fixed quote within 24 hours.

Top Rated Plus Android developer with 11+ years of experience, 100% Job Success, and 1,400+ hours on Upwork. I build, modernize, and rescue production Android apps using Kotlin, Jetpack Compose, Java, and Kotlin Multiplatform. Clients hire me to: * Build native Android applications from requirements through release * Modernize legacy Java or Kotlin codebases * Migrate XML interfaces to Jetpack Compose * Diagnose difficult bugs, background-service issues, and unstable integrations * Develop new features and improve existing application architecture * Add unit tests, automated builds, and CI/CD pipelines * Build Android TV, Fire TV, kiosk, MDM, BLE, USB, and hardware-connected applications * Share business logic between Android and iOS using Kotlin Multiplatform My Upwork projects include a Kotlin Multiplatform migration, Android TV launcher customization, a parental-controls application, a Fire TV kiosk app, Jetpack Compose development, GPS background services, Google MDM configuration, and Agora SDK integration. Core technologies: Kotlin, Java, Jetpack Compose, Android SDK, Coroutines, Room, WorkManager, Navigation, Retrofit, REST APIs, Firebase, Gradle, Git, Hilt, Koin, Kotlin Multiplatform, unit testing, and CI/CD. I am comfortable joining an existing codebase, investigating incomplete requirements, and turning complex technical problems into a clear implementation plan. Send me your project brief, current technical challenge, or bug list. I will tell you what I would investigate first and whether I am the right developer for the project.

✅ 100% Job Success, Top Rated ✅ Delivering great native Android apps since 2012 ✅ Delivering great iOS apps since 2015 ✅ Delivering great Cross Platform apps (both Flutter & React Native) since 2017 A highly experienced mobile developer skilled in iOS (Swift/Obj-C) and Android (Kotlin/Java). A fan of the MVVM pattern and reactive programming. Perfectly dealing with Agile methodology, TDD, Sketch, Figma, Git. Have a strong background in application development (since 2009). Areas of Expertise: • Programming languages: •• Kotlin, Java •• Swift, Objective-C (Intermediate) •• Flutter, Dart •• React Native, Typescript, Javascript •• watchOS, tvOS • Cloud services: •• Firebase, iCloud, Mixpanel, Crashlytics, Urban Airship, Flurry, AWS, Dropbox • Frameworks: •• Jetpack, Google Services, RxJava, Coroutine, Flow •• SwiftUI, CoreLocation, StoreKit, RestKit, ReactiveCocoa, RxSwift, Alamofire, Combine •• Google Maps • Databases: •• Room, CoreData, SQLite, MySQL, PostgreSQL, Realm • Payment processing: •• Google Play Billing, In-App Purchase, Stripe, Braintree • CI/CD & Testing: •• Bitrise, Jenkins, Gitlab •• Junit, Espresso, Quick, Nimble, XCUITest, Slather, Jacoco •• Codacy for test coverage reporting • Other: •• Patterns: MVVM, MVP, Coordinator •• Game Dev: Phaser, SpriteKit, Cocos2d, box2D, ARKit •• Social networks integration: Facebook, Twitter, Instagram, Sign In With Apple, Google Sign In