Live2026· 10K+ downloads
AH VPN — Fast VPN Secure Proxy
A one-tap VPN with no sign-up required, backed by servers across the US, Europe and Asia.
- Kotlin
- Android VpnService
- In-app Purchases
- AdMob
Available for new projects
Đỗ Mạnh HùngAndroid Developer
I build Android apps with Kotlin & Jetpack Compose — from the first wireframe to the day they ship on Google Play.
Work
Apps I have built
A few of the apps I have published on Google Play. Each one has its own page describing the problem and how I solved it.
Live2026· 10K+ downloads
WiFi Nearby — WiFi Hotspot Map
An interactive map of nearby WiFi hotspots, with a network scanner and automatic reconnection.
- Kotlin
- WifiManager
- Google Maps SDK
- Location Services
Live2026· 100+ downloads
Shimeji Pet — Anime Pet
Anime pets that roam across your phone screen, with a planting, feeding and gacha collection system.
- Kotlin
- Overlay Window
- Animation
- AdMob
About
A little about me
Hi, I'm an Android developer. I care about apps that feel smooth, start fast, and keep working when the network drops.
My day-to-day revolves around Kotlin, Jetpack Compose and MVVM. Outside of work I build small apps to try out new Android APIs and scratch my own itches — they are all listed on the Apps page.
- Date of birth
- 30/07/2002
- Location
- Hanoi, Vietnam
- Phone
- 0886053265
Languages & UI
- Kotlin
- Java
- Jetpack Compose
- XML Layout
- Material 3
- Flutter
Android & Architecture
- MVVM
- Coroutines & Flow
- Hilt
- Room
- WorkManager
- Navigation
Backend & Tooling
- Retrofit
- Firebase
- Gradle
- Git
- CI/CD
- Play Console
Other skills
- Business Analysis
- Quality Control
- Team Development
Journey
Experience & education
Aug 2025 — present
Android Developer
Amobear Vietnam
Full-time · Dinh Cong, Hanoi
Building Android apps for the company's products with Kotlin and Jetpack Compose.
May 2024 — May 2025
Android Developer — Business Analysis
Medi Pharm Vietnam
Full-time · Vietnam
Described the application and defined the features it needed. Took part in development directly and helped build the Android platform for the product.
Apr 2022 — Sep 2022
Android Developer
MTG Technology Co., Ltd.
Part-time · Hanoi
Worked with the team on Android development, covering quality control and day-to-day collaboration on the product.
Oct 2020 — Mar 2025
Bachelor of Engineering, Information Technology
Hanoi Open University
Graduated in Information Technology. During my studies I focused on mobile development and built my first Android apps.
Blog
Recent writing
Notes on what I learn while building products.
Feb 03, 2026
Five Jetpack Compose optimisation tips from a junior Android developer
Avoiding extra recomposition, using remember in the right places, keying LazyColumn, handling side-effects and hoisting state — what I learned after wrestling with Compose.
Jul 11, 2025
Starting out as an Android developer
Fresh out of university, I finished two personal projects — VideoPlay and Excel Reader — and worked out which areas I wanted to go deep on.
Contact
Let's build something
If you have a project in mind, or simply want to talk shop, send me an email.