René Krell
Lead Software Developer And Architect, DevOps Engineer at puzzleYOU CZ
Plzen Metropolitan Area Czechia
Summary
👤
Senior🎓
Top SchoolRené Krell is a pragmatic lead software developer, architect and DevOps engineer with 16 years of experience building full-stack, cloud-native production systems from Plzen, Czechia. He designs and operates scalable backends and automation for industrial and retail environments, routinely shipping Docker/Kubernetes deployments on Google Cloud with CI/CD on GitLab. Comfortable across Python, Java and modern JS frameworks, he pairs hands‑on coding with systems administration and close collaboration with production teams and machine vendors. Longstanding open-source contributions to the IzPack installer show deep familiarity with multi-platform build and installation tooling, including Maven and console installer improvements. Known for straightforward, solution-oriented communication, he blends low-level problem solving (file/archive handling, logging, PLC integration) with architectural thinking.
16 years of coding experience
21 years of employment as a software developer
Computer Science, Computer Science at Slovenská technická univerzita v BratislaveDiplom-Informatiker, Computer Science, Diplom-Informatiker, Computer Science at Technische Universität Chemnitz
Spanish, English, German, Czech, Slovak
Github Skills (12)
maven10
javas10
java10
build-automation9
automated-build9
autobuild9
codebuild9
build-system9
build-process9
maintenance8
console-application8
xml8
Programming languages (9)
Github contributions (5)
izpack/izpack
May 2014 - Nov 2019
IzPack - Source Code
Role in this project:
Back-end Developer
Back-end DeveloperContributions:733 commits, 549 PRs, 497 pushes in 5 years 7 months
Contributions summary:René primarily focused on bug fixes and implementing enhancements within the IzPack installer. Their contributions included resolving issues related to the user input panel, license panels, and dynamic variable handling. The user also made improvements to the console installer, including enhancements to logging and the handling of user input fields. Additionally, the user addressed problems with file operations within the installer, specifically related to archive and file set handling.
javaizpackmaveninstaller
jponge/izpack
Feb 2010 - Sep 2012
(I no longer maintain this repository, please go to 'izpack/izpack')
Role in this project:Back-end Developer
Back-end DeveloperContributions:190 commits, 1 comment in 2 years 7 months
Contributions summary:René primarily focused on fixing build errors and compilation issues within the IzPack project, indicating a focus on the core functionality and build processes. The commits involve changes to various Java files, including the core and panel modules, suggesting a role in maintaining and improving the project's internal workings. The user also addressed a typo in the Maven plugin, demonstrating a knowledge of the build process with Maven.
izpack
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