Hi, I'm Konrad Szewczuk

Mobile Developer

I build reliable mobile applications with Flutter, Dart and Kotlin, focusing on clean architecture, automated testing, offline-first experiences and maintainable code.

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Technology stack

Tools I work with

Flutter

Dart

Android

Kotlin

iOS

Firebase

Git

Expertise

What I do

Cross-platform applications with Flutter and Dart
Native Android development with Kotlin
Kotlin Multiplatform for sharing business logic across Android, iOS and web
Clean architecture and modular application design
REST API integration and offline-first data storage
Unit and integration testing
Firebase, analytics, crash reporting and app distribution
Continuous integration and deployment

Responsive landing pages and developer portfolios
Single-page applications with Flutter
Kotlin Multiplatform for sharing business logic across Android, iOS and web
SEO optimization and performance tuning
Integration with REST APIs and third-party services
Deployment to cloud platforms
Continuous integration and deployment

Mobile Developer

Tools I work with

What I do

My work

Projects

Let's talk

Contact