Ondřej Žižka
Senior Software Engineer at Nexxiot
Urdorf, Zurich, Switzerland
Summary
👤
Senior🎓
Top SchoolOndřej Žižka is a Senior Software Engineer with 15 years of hands-on experience building back-end systems and automation, currently contributing at Nexxiot from Urdorf, Zurich. He specializes in Java (Java 8+/EE7) and related stacks, with broad fluency across TypeScript, C/C++, SQL, and multiple databases including Neo4j and PostgreSQL. A pragmatic prototyper who values focused remote work and frequent screen-sharing collaboration, he combines deep knowledge of declarative programming (XSLT/XPath, SQL, map/reduce) with practical CI/testing expertise (JUnit, Selenium, Jenkins). Ondřej is an active open-source contributor—having improved WildFly and JBake—demonstrating attention to build automation, XML transformation, and backend robustness. He stays current with trends but prefers to settle on a reliable stack to push projects to completion.
15 years of coding experience
Ing., Information Technologies, Ing., Information Technologies at Brno University of TechnologyBachelor of Science, IT, Bachelor of Science, IT at Jihočeská univerzita v Českých Budějovicích
German, English, Czech
Stackoverflow
45,413reputation
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548answers
296questions
mysql
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java
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logging
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grep
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maven
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Github Skills (44)
markdown10
xslt10
testing10
bash10
java10
javas10
markdown-it10
build-automation10
maven10
mysql9
freemarker9
utf9
annotations9
file-extension9
filesystem9
Programming languages (15)
Github contributions (5)
jbake-org/jbake
Jul 2018 - Oct 2018
Java based open source static site/blog generator for developers & designers.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:29 commits, 26 PRs, 50 comments in 3 months
Contributions summary:Ondřej primarily contributed to the back-end of the JBake project, focusing on improving the core functionality and fixing existing issues. Their work included refactoring the MarkdownEngine class, making the logger static, and addressing file name encoding issues. Additionally, the user optimized tests by switching database storage and cleaning up the Freemarker templates for better performance and maintainability.
blog-siteblog-generatorstatic-sitejbakejsinterop
wildfly/wildfly
Oct 2012 - Nov 2012
WildFly Application Server
Role in this project:Back-end Developer & Automation Engineer
Back-end Developer & Automation EngineerContributions:2 commits in 10 days
Contributions summary:Ondřej primarily focused on updating and fixing XSLT files related to XML transformation within the WildFly application server. They addressed issues with attribute placement and made several updates to the `integration-tests.sh` and `.bat` files, introducing new test directives and convenience options. The user also made changes to the testsuite configuration, including updates to test groups and system properties used during testing, demonstrating experience with build automation.
javawildflydockerapplication-server
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