Available for freelance

Building Android Experiences That Matter

Senior Android Developer crafting high-performance, pixel-perfect mobile applications with Kotlin, Jetpack Compose, and modern architecture patterns.

0 Years Exp
0 Apps Shipped
0 M+ Downloads
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Passionate about mobile,
obsessed with performance.

Alex Chen

Senior Android Engineer

Specialized in building scalable Android applications with clean architecture. Advocate for Kotlin coroutines, Jetpack Compose, and Material Design 3.

Kotlin Java Jetpack Compose Room Ktor Dagger Hilt Firebase Gradle

I've spent the last 8 years deep in the Android ecosystem, shipping apps that have collectively reached over 12 million users across the Play Store. From fintech to health tech, I bring a product-first mindset to every line of code.

My approach combines clean architecture with performance obsession — I don't just build features, I build experiences that feel native, fluid, and delightful on every Android device from budget phones to foldables.

Currently exploring KMP (Kotlin Multiplatform) and Wear OS development, while mentoring junior developers and contributing to open-source Android libraries.

Apps that users love,
code that scales.

💰
FINTECH ★ 4.8

VaultPay

Secure digital wallet with biometric auth, real-time transactions, and end-to-end encryption. Handles 50K+ daily active users.

500K+ Downloads
4.8★ Rating
Kotlin Stack
❤️
HEALTH ★ 4.9

PulseTrack

AI-powered health monitoring with wearable integration, real-time heart rate analysis, and personalized wellness insights.

1M+ Downloads
4.9★ Rating
Compose UI
🚀
PRODUCTIVITY ★ 4.7

TaskFlow

Smart task manager with AI prioritization, offline-first sync, and collaborative workspaces. Built with KMP for shared business logic.

300K+ Downloads
4.7★ Rating
KMP Shared
🎵
ENTERTAINMENT ★ 4.6

SoundWave

Immersive audio streaming with spatial audio support, custom equalizer, and seamless offline playback. ExoPlayer + Media3.

800K+ Downloads
4.6★ Rating
Media3 Core

Tools & technologies
I wield daily.

📱

Android Core

Kotlin, Java, Android SDK
Kotlin98%
Jetpack Compose95%
XML Views90%
⚙️

Architecture

MVVM, MVI, Clean Architecture
MVVM + MVI96%
Coroutines + Flow94%
Dagger Hilt92%
🌐

Backend & Data

REST, GraphQL, Firebase
Ktor / Retrofit93%
Room / SQLDelight91%
Firebase Suite88%
🔧

DevOps & Testing

CI/CD, Testing, Performance
GitHub Actions / CI87%
JUnit / Espresso90%
Performance Tuning85%

Where I've been,
what I've built.

2023 — PRESENT

Senior Android Engineer

Stripe Technologies

Leading Android development for the consumer payments app. Architected migration to Jetpack Compose, reducing UI rendering time by 40%. Mentoring a team of 5 engineers.

2020 — 2023

Android Developer

NexHealth

Built the flagship patient-facing Android app from 0 to 1M+ downloads. Implemented offline-first architecture with Room and WorkManager. Reduced app startup time by 60%.

2018 — 2020

Mobile Engineer

Finova Labs

Developed 3 fintech applications using Kotlin and MVVM architecture. Integrated biometric authentication and real-time payment processing. Play Store feature twice.

2016 — 2018

Junior Android Developer

AppVenture Studio

Started my Android journey building e-commerce and social apps. Learned the fundamentals of Android SDK, RecyclerView, and custom views. Shipped 8 apps to Play Store.

Let's build something
extraordinary together.

Have a project in mind?

Whether you need a full Android app built from scratch, a performance audit, or help with Kotlin Multiplatform migration — I'm here to help. Let's discuss how we can turn your idea into a polished product.

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