I'm a passionate Mobile Android Developer since Android 2.3 (ca. 8 years). I created many mobile apps using native ( Kotlin / Java ) and cross-platform ( Flutter / Unity3D ) technologies. Nowadays, I work as a Freelance Android Developer.
Holidu is one of the fastest-growing travel tech companies worldwide. It's based in Munich, Germany, and provides a vacation rental meta-search engine.
During more than 2 years in the company, I rewrote 75% of the original Java codebase to Kotlin, increased test coverage, cleaned the app architecture, and introduced dependency injection to the project. I developed many challenging features like google sign-in, theme-based search, or image classification using machine learning (hackathon project). I updated the look and feel of the app by implementing the Material design components, fancy transitions, and animations.
Used technologies: MVVM, MVI, RxJava, Retrofit, Room, Coroutines, Push-Notifications, Hilt, Firebase, Jenkins
Minesweeper is a mobile version of well-known puzzle video game. The game has more than 2,000,000 downloads and very good user reviews. The objective of the game is to clear a rectangular board containing hidden "mines" or bombs without detonating any of them, with help from clues about the number of neighboring mines in each field.
I'm closely monitoring the app with tools like firebase analytics to better understand how users use the app and crashlytics to quickly detect new issues. I'm using A/B testings and staged rollouts before publishing major changes and new features I'm still working on. The last major feature I've added to the app was Google Play Instant, people can tap to try an app without installing it first.
Wealth Check allows you to check balance an history of any bitcoin wallet. Just scan bitcoin address QR code to see all important informations like bitcoin balance, fiat balance by current conversation rate, transactions history, etc. All scanned wallets are safely stored on your phone for offline access. You can sort wallets in the favorites list.
The app is written mostly in Kotlin programming language. It's my open source project and the source code is available on GitHub. I have chosen MVVM pattern for main app structure. I have implemented part of Android Architecture Components and libraries like RxJava, Retrofit, Dagger 2, Moshi, etc. Feel free to contribute.
During more than 2 years in the company, I rewrote 75% of the original Java codebase to Kotlin, increased test coverage, cleaned the app architecture, and introduced dependency injection to the project. I developed many challenging features like login, theme-based search, or image classification using machine learning (hackathon project). I also had the opportunity to help with backend development in the Java Spring Boot framework during the corona situation.
I founded Verusoft to be able to work on my own ideas in a more professional way. I released many successful android and iOS apps and games with more than 3,000,000 downloads and very positive user reviews. I was one of the early adopters of the Android Instant App and worked closely with the Android Instant Apps team from Google on implementing this feature.
I was developing an android app Soonr Go (later rebranded to Autotask Workplace Mobile). The mobile app provides secure access to the user's content, allows them to create and edit files, and sync all changes between other clients. Android and iOS clients shared the same core written in C so the app was heavily using Java Native Interface (JNI).
I was part of a small team developing automatic invoice verification software. The software was used internally by employees of Geodis Calberson to automate and improve invoice processing.
Bachelor’s degree in Information Technologies
Apart from being a mobile developer, I enjoy most of my time with my family. I have a wife and baby boy named Filip. I prefer spending time outdoors, biking, swimming, and skiing.
When I'm forced indoors, I spend a large amount of my free time exploring the latest technology advancements in the mobile development world.