I offer professional development and programming of mobile applications for Android and iOS. When needed, I will specify, design, prototype, develop, test, and deploy the app to Google Play or the App Store.
I primarily work with Linux, Android Studio, Kotlin, Kotlin Multiplatform, Jetpack/Multiplatform Compose, Git, and other tools such as Gimp, Inkscape, sometimes a DSLR camera, a graphics tablet, and both my own mind and AI.
I enjoy working as a lone wolf, allowing me to fully focus on the task at hand, but I also value team efficiency and the needs of its members. Mutual openness and reliability are essential to me.
You can find samples of my work below.
Třinec, Czech Republic
ID 03533824
Registered in the Business Register
Published in 2024
Markomat Ticket Validator is application for validation of digital cards issued by Markomat system. It includes both classic and encrypted QR codes and face recognition.
This is a native application programmed in Kotlin using JetPack Compose.
Get it on Google Play (currently available only in Czechia, Germany, Poland and Slovakia)
Published in 2022
My Storyous is an app designed for the owners of the Storyous POS system. With its help, users have an overview of sales in the company. In addition, they can also connect with customer support via chat at any time. The application was developed for Teya Czech Republic, s. r. o. (formerly Storyous, s. r. o.) in cooperation with the development team at iDevBand, s. r. o. I developed the application in Kotlin language using Android JetPack Compose / Glance and with respect to Clean Architecture rules.
Get it on Google Play
Published in 2020
OnlineAmbulance is the first primary care application of its kind. It allows users to access health information faster and more conveniently and keep their health under control.
The application was developed for Moje Ambulance, a. s. in cooperation with the development team at iDevBand, s. r. o.
I developed the application in Kotlin language using Android JetPack and with respect to Clean Architecture rules.
Get it on Google Play (currently available only in Czechia)
Published in 2018
Digital wallet for smart cards. The application is used to store non-payment cards such as tickets, loyalty cards, coupons, ovuchers and other tickets in .pkpass format.
I develop the application for Your Pass, s. r. o.
The application received the Deutscher App-Award 2024 in the category Finance and Insurance – Wallet Apps
Get it on Google Play
Published in 2019
This is my own application implementing personality test according to Myers-Briggs typologies. The test focuses on how different people perceive the world and make their decisions.
Get it on Google Play
Published in 2018
This is my own application implementing a variant of Raven's standard progressive matrices, which got their name according to their creator John C. Raven, who developed them in 1936 as a non-verbal test of abstract thinking. The evaluation function is based on anonymous results from over 5 million users worldwide.
Get it on Google Play | App Store
Published in 2018
This is my own app using which you can schedule and play the Christmas bell to let your children know that they have their presents under the tree.
Get it on Google Play
Published in 2018
Application for buying tickets and paying parking. I have adopted this application, refactored and added other functionalities. The application was developed for YourSystem, s. r. o.
It is no longer published.
is very simple, intuitive and useful application for moms that need to track breast or bottle feeding, pumping, diaper changes and others easily. All such data may show you or pediatrician how your child is benefiting or alert if something is not going well.
Graphic design and development (Java, Android SDK), web design
https://babycaretracker.com, get it on Google Play
2013 – 2017
TEM Software Engineer
Developing software for TEM based microscopes (Talos, Titan, Tecnai). Working with TEM software development team in Netherlands and Russia. Cooperating with product engineering, system engineering, service and factory teams to find best solutions for all users.
Applied technologies and tools: C++, Perl, Python, HTML5, JavaScript, CSS3, Visual Studio, Wix, RTC, Git.
My working day
How to make a microscope: English, Česky
Web presentation of the law office of JUDr. David JOPEK, Ph.D. in Třinec.
Provided services: Web design, custom web page development (HTML, CSS, JavaScript), domain registration, hosting maintenance, on-page SEO and traffic analysis.
2004 – 2013
Software Developer, Team Lead, Project manager
Mostly telecommunications projects.
The Bomberman game inspired by Master Blaster, which we used to play on the famous Commodore Amiga computers.
The game has been programmed in C++ for Windows using DirectX libraries. Unfortunately, it does not work with Windows 10. It works seamlessly on all versions of Windows (95-Win7) and works well with Linux with using of Wine.
Download installation executable | Preview
2000 – 2005
Specialization - Applied informatics.
