havlicektomas.dev
From: Czechia
Location: ŠLAPANICE U BRNA
On Useme since 13 August 2026
About me
I’m a senior Android developer with more than 10 years of hands-on mobile experience. My background includes payment terminal applications, mobile payment products, POS systems, e-commerce applications, hardware integrations, and large-scale commercial Android projects.
My core technologies include Kotlin, Coroutines, Flow, Jetpack Compose, Android Jetpack, Room, Retrofit, Ktor, Koin, Dagger/Hilt, and Firebase. I also work with automated testing, CI/CD, application distribution, monitoring, and backend integrations.
I use AI-assisted development workflows with tools such as Claude Code and OpenAI Codex to accelerate research, prototyping, implementation, testing, documentation, and code review. I treat AI as an engineering tool: the resulting code still needs sound architecture, security, testing, and experienced technical judgment.
Categories
CV / Résumé
Nov 2023 - Now
Senior Android Developer
Global Payments Inc.
Developing a production Android application for payment terminals, with a focus on reliability, maintainability, and delivery across the full development lifecycle.
Portfolio
A Kotlin Multiplatform app sharing business and data logic across Android and iOS, with Compose Multiplatform UI on Android and native SwiftUI on iOS.
A football fan engagement app built as native Jetpack Compose and SwiftUI clients over a shared Kotlin Multiplatform layer that owns networking, persistence, repositories, and live-match synchronization.
A Kotlin Multiplatform app sharing a unified Compose Multiplatform interface across Android and iOS. It scans QR codes via the camera in real time and generates codes from text, URLs, contact cards, phone numbers, geolocation, and Wi-Fi credentials.