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I will build your native android app in kotlin and jetpack compose
DoanPhu
About this gig
Need a native Android app built right, from the first screen to a release-ready build?
I'm Phu Doan, an Android Tech Lead at FPT Telecom with 5+ years of experience. I've worked on FPT Play (OTT streaming used by millions), FPT VMSmart and FPT Life (smart home), and I'm building AILearnChild, my own learning app for kids.
I can build:
- E-commerce & shopping apps: catalogs, cart, checkout, orders
- Payments: Google Play Billing, in-app purchases & subscriptions, Stripe, VNPay/MoMo-type gateways
- E-book & reading apps: EPUB/PDF readers, bookmarks, offline library
- Health & fitness apps: Health Connect, step/activity trackers, charts
- Any custom app idea or MVP
Tech stack: Kotlin, Jetpack Compose, MVVM / Clean Architecture, Hilt, Retrofit, Room, Firebase (Auth, Firestore, FCM, Crashlytics).
You get clean, maintainable source code, clear communication and a signed APK/AAB.
Budget is flexible: message me before ordering with your idea, and I'll send you a custom offer that fits your project. Also available: bug and crash fixing, AdMob/ad mediation integration, ExoPlayer/Media3 video players (HLS, DASH, RTSP), and BLE/IoT/MQTT features.
Get to know DoanPhu
DoanPhu
Android dev, Vietnamese content, translation, video
- FromVietnam
- Member sinceOct 2026
- Avg. response time7 hours
Languages
Vietnamese, English
Senior Android Engineer and Technical Lead with 5+ years of experience building scalable Android applications. Skilled in Kotlin, Java, Jetpack Compose, Clean Architecture, MVVM/MVI, Coroutines, and Flow. Experienced in software architecture design, performance optimization, team leadership, and mentoring. Successfully contributed to OTT streaming, Smart Home IoT, and enterprise VMS solutions. Passionate about solving technical challenges, improving code quality, and delivering high-quality products. Also: Vietnamese writing, EN-VI translation/localization, short video editing + subtitles.
My Portfolio
FAQ
Do I get the full source code?
Yes. You receive the complete Kotlin project and own it, plus a signed APK/AAB on delivery.
Can you connect the app to my backend or build one with Firebase?
Yes. I can integrate your REST API, or use Firebase (Auth, Firestore, Storage, FCM) if you don't have a backend yet.
Can you integrate payments or in-app purchases?
Yes. I can integrate Google Play Billing (one-time and subscriptions), Stripe, or local gateways like VNPay/MoMo, depending on your needs and the provider's SDK/API.
I only have an idea. Where do we start?
Send me a short brief or sketches. I'll suggest scope, screens and a milestone plan, then quote a fixed price. No technical knowledge needed.
Why native Kotlin instead of Flutter or React Native?
Native Kotlin + Compose gives the best performance, smooth UI, full access to Android APIs (BLE, media, billing) and long-term maintainability.
Can you fix bugs or maintain my existing Android app?
Yes. Send the project or repo and a description of the bug or feature; I'll review it and quote. Small fixes and ongoing maintenance are welcome.
