Available for freelance & full-time

Hi, I'm Lijin.
Mobile App Developer

I build polished cross-platform apps with React Native & Expo.

Apps shipped
3+
Years building mobile
4+
Platforms
iOS · Android
9:41Vehicles􀙇

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My Garage

NEXT SERVICE12 days

Tesla Model 3

42,180 km · Electric

Honda Civic

Insurance · renew

Yamaha R15

Serviced last week

Ford Ranger

Docs up to date

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About

Turning ideas into apps people love.

I'm a mobile developer focused on shipping fast, reliable, and great-looking apps for iOS and Android. I work end-to-end — from product and UI to native integrations, Firebase backends, and store delivery with EAS. I care about the small details that make an app feel truly native.

React Native & Expo specialistFirebase & native integrationsShip to App Store & Play Store

Selected work

Apps I've designed & built.

A few projects that show how I take mobile products from idea to the store.

VehicleManager

Vehicle management, done right

01

An Expo app to track vehicles, service history, and documents behind a polished dark-violet interface. Built on Expo Router, React Native Paper, and Firebase (Auth + Firestore) with a native dev build.

ExpoExpo RouterRN PaperFirebaseTypeScript

CarUtility

YouTube, made for the car

02

An in-car video experience built with React Native. After evaluating and ruling out AAOS and Android Auto, I shipped a universal app paired with a screen-mirroring approach for a safe, driver-friendly player on the head unit.

React NativeAndroidScreen MirroringTypeScript

Firebase Push Admin

Send notifications with confidence

03

An admin tool for composing and sending push notifications through Firebase Cloud Messaging — targeting devices, topics, and segments from a simple, focused dashboard.

FirebaseFCMNode.jsAdmin SDK

Toolbox

Technologies I work with.

Mobile

  • React Native
  • Expo
  • Expo Router
  • React Navigation
  • EAS Build

Languages

  • TypeScript
  • JavaScript
  • Kotlin
  • Swift

Backend & Services

  • Firebase
  • Firestore
  • Cloud Messaging
  • REST APIs
  • Node.js

UI & Animation

  • React Native Paper
  • NativeWind
  • Reanimated
  • Gesture Handler

Tooling

  • Git
  • Android Studio
  • Xcode
  • Figma

Contact

Have an app idea? Let's build it together.

I'm open to freelance projects and full-time roles. Drop me a line and I'll get back to you soon.