I will do custom android app development using kotlin and java as mobile app developer

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backendarchitec
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backendarchitec
Steffen Wanne
do custom android app development using kotlin and java as mobile app developer
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do custom android app development using kotlin and java as mobile app developer

About this gig

Looking for a professional Android app developer to build a reliable, scalable, and production-ready mobile application? I create custom native Android applications using Kotlin, Java, Android Studio, and modern Android technologies for startups, businesses, and companies.


I specialize in developing Android apps for:

  • Business & enterprise solutions
  • Startup MVP applications
  • E-commerce & shopping platforms
  • Booking & service apps
  • Healthcare & fitness solutions
  • Education & productivity apps


My Android development services include:

  • Native Android app development with Kotlin & Java
  • Modern UI with Jetpack Compose & Material Design
  • Firebase integration & cloud solutions
  • REST API / GraphQL integration
  • Secure authentication & user management
  • Push notifications and real-time features
  • Payments, subscriptions & third-party integrations
  • Google Maps, GPS, QR scanner & device features
  • Google Play Store preparation and publishing support
  • Android bug fixing, updates & performance optimization


I focus on clean architecture, MVVM, scalable code, device compatibility, security and smooth performance across different Android versions and devices.


Message me today to get started with your project!

  • App type

    • Native

  • Purpose

    • Chat
    • Shopping
    • Booking
    • Medical
    • Health & Fitness
    • Kids
    • Education
    • Productivity tools
    • Custom
    • E-commerce

  • Expertise

    • Performance
    • Security
    • Data storage
    • Firebase
    • Release management
    • API integration
    • Compatibility

  • Programming language

    • Java
    • JavaScript
    • Kotlin
    • PHP
    • Python
    • TypeScript
    • Dart

  • Frameworks

    • Flutter
    • Laravel
    • Jetpack Compose
    • Node.js
    • Android
    • React Native

  • Tools

    • Bubble.io
    • Flutterflow
    • Expo
    • Android Studio
    • Unity
    • Firebase
    • Supabase

Get to know Steffen Wanne

Steffen Wanne

Helping startups and businesses build, fix, and optimize mobile and web apps

  • FromGermany
  • Member sinceApr 2026
  • Avg. response time13 hours

  • Languages

    English, German, Italian, Spanish
Hi, I'm Steffen Wannemaker, a professional mobile app developer and full-stack web developer. I specialize in Flutter mobile apps and modern web applications. I help startups and businesses fix bugs, optimize performance, and build scalable front-end and back-end systems. With solid experience in React, APIs, and database integration, I deliver clean, efficient, and reliable solutions. If your app needs speed, stability, or a fresh build, message me now and let’s get it done.

My Portfolio

Other Mobile App Development Services I Offer

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