Howdy! I am glad you visited my little corner of the web. Below, you can find a brief description of me and this blog.

Who am I?


My name is Piotr Wittchen. I am software developer currently based in Gliwice, Poland and working at SAP Hybris. I graduated Engineering and Master studies of Automatic Control, Electronics and Computer Science at Silesian University of Technology. I’m also member of Silesia JUG (Java Users Group). I’ve created this blog in order to collect and share my thoughts, experiences, links, code, notes and learn new stuff. I hope, someone else will learn something new here as well. I like to use open-source projects and contributing back to the community. If you are interested in my selected private work, you can view it in the Projects section. Besides geeky stuff, I like fresh drip coffee brew, sports (especially gym, riding a fixed-gear bike and football or soccer if you are an American), traveling, music and playing the guitar. You can contact me at and find me on LinkedIn, Github, StackOverflow, Twitter and Google Play. You can also check out my coder stats.


I have a full-time job right now, but I’m open for interesting events, projects, conferences, organizing training and public speaking opportunities.
I’m also open for interesting affiliate programs and partnerships related to the content of this blog.
If you want to begin cooperation, feel free to contact me at

Content of the blog

I treat this blog as my public, on-line notepad. It reflects my private opinions and perspectives. Many articles on this website are strongly connected with computer science, software development, mobile & web applications. Currently, I’m focused mostly on JVM technologies and things around it. I also try to discover new programming languages and topics, which don’t have to be related to computers. Keeping those facts in mind, the list of categories on this blog is in theory unlimited, but in practice, most of the posts are related to my work and projects.

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Why is it in English?

I am Polish native speaker and writing posts in English is kind of language training for me. I also want to make my articles more available. There’s no doubt, that more people on this planet speak English than Polish. I apologize in advance for any language mistakes. If you found one, please notify me about that in comments below proper article or send me an e-mail.