Juraj Kušnier

email: jurajkusnier@gmail.com skype: juraj.kusnier

I am an Android Developer with more than 5 years of experience. Mobile Development is not only my job but also my hobby. I love challenges, improving my skills and learning new technologies.

My Projects

Minesweeper Classic

Android Game

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 - Bitcoin Wallet Balance and History

Android App

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.

Submarine Dash

Android & iOS Game

Submarine Dash is a 3D arcade game designed for Android and iOS mobile devices. The player leads small submarine to explore the ocean and collect lost treasure.

Just Turn Right

Android & iOS Game

Just Turn Right is a 3D puzzle-casual game designed for Android and iOS mobile devices. The main features of the game are one-finger control, demanding puzzles and fast and challenging gameplay.

More apps and games are on Google Play Store and iTunes App Store


Android Developer

Holidu GmbH, Munich

Currently, I'm working in a very successful German startup. Holidu’s main product - the search engine allows users easily search for and book holiday accommodations. I'm mainly focused on developing and maintaining a mobile client, but I had a chance to put my hands also on other interesting projects.

September 2018 - Present

CEO & Lead Mobile Developer

Verusoft, s.r.o, Bratislava

I founded Verusoft to be able to work on my own ideas in a more professional way. The company is focused mainly on mobile development. I released many successful mobile apps and games with more than 3,000,000 downloads and very positive user reviews.

August 2015 - Present

Android Developer

Foundation, s.r.o, Bratislava

I was part of a small team developing android app Soonr Go (later rebranded to Autotask Workplace Mobile). The mobile app provides secure access to user's content, allows him to create and edit files and sync all changes with other devices

April 2014 - November 2015

Software Developer

Siemens Convergence Creators, Brno

I worked as an HTML5 and Smart TV developer for OTT (Over-the-top) solutions. I participated in the development of multi-platform media application that provides audio and video content over the Internet without the involvement of a multiple-system operator (MSO) in the control or distribution of the content.

June 2013 - March 2014

Software Developer

Geodis Calberson, Bratislava

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.

December 2010 - June 2011


Brno University of Technology

Faculty of Information Technology

Interrupted study

2011 - 2013

Slovak University of Technology in Bratislava

Faculty of Informatics and Information Technologies

Bachelor’s degree in Information Technologies

2008 - 2011


Mobile development
  • Android SDK & NDK
  • UI/UX Design
  • Data Analytics
  • A/B testing
  • App Store Optimization (ASO)
  • Android Instant Apps
  • 20+ Apps on Google Play, Amazon App Store and iTunes App Store
  • Deploying and maintaining apps with more than 20,000 DAU

Programming Languages




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.