Libor Krzyžanek
Senior Principal Software Engineer at Red Hat
Vienna, Austria
Summary
🤩
Rockstar🎓
Top SchoolLibor Krzyžanek is a Senior Principal Software Engineer based in Vienna with over 20 years of hands-on experience across the full software delivery lifecycle, from greenfield architecture to long-term operations and maintenance. At Red Hat he has progressed through senior engineering and principal roles into agentic AI and user experience engineering, blending deep backend Java expertise (Quarkus, Spring, Java EE) with modern cloud-native tooling (Kubernetes, OpenShift, ArgoCD). He is comfortable across stacks — backend, frontend, testing, monitoring and databases — and increasingly applies AI tooling like LangGraph and Ollama alongside Python in production workflows. An active contributor to notable open-source projects such as ManageIQ, his work often focuses on pragmatic backend improvements and UI refinements that improve usability and resilience. Known for turning operational feedback into stronger architectures, he combines pattern-driven design with creative integration thinking to solve complex problems.
10 years of coding experience
18 years of employment as a software developer
Bachelor's degree, Information Technology, Bachelor's degree, Information Technology at Vysoká škola báňská - Technická univerzita Ostrava
English, Czech, Polish, German, Slovak
Stackoverflow
131reputation
12kreached
2answers
3questions
Github Skills (21)
develop10
web-application10
back-end-development10
rails10
ruby10
uid10
ruby-on-rails10
application10
ui-design9
sql9
user-interface8
front-end-development8
interface-design8
maven6
configurations6
Programming languages (10)
Github contributions (5)
ManageIQ/manageiq
Oct 2015 - Feb 2021
ManageIQ Open-Source Management Platform
Role in this project:
Back-end Developer
Back-end DeveloperContributions:38 reviews, 1096 commits, 751 PRs in 5 years 5 months
Contributions summary:Libor primarily contributed to the back-end development of the ManageIQ Open-Source Management Platform. They focused on modifying UI elements, such as changing the labels and options within the UI's task analysis. They also made bug fixes involving code corrections, exception handling, and improving the overall functionality of specific modules and functions. The user's work involved modifications to core models and controllers.
gcporigamiopenshiftcephredfish
ManageIQ/manageiq-ui-classic
Oct 2015 - Mar 2021
Classic UI of ManageIQ
Role in this project:Back-end Developer
Back-end DeveloperContributions:3 reviews, 468 commits, 221 PRs in 5 years 5 months
Contributions summary:Libor primarily contributed to the user interface (UI) of ManageIQ by making changes to existing components, modifying labels, and fixing bugs. The contributions involved updating labels, changing the display, and modifying code within UI helper files and controllers. These commits demonstrate a focus on improving the user experience through targeted UI adjustments and ensuring consistent application behavior.
reactmanageiq
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