Daniel Vrátil
Senior Principal Software Engineer at KDE
Prague, Prague, Czechia
Summary
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Rockstar🎓
Top SchoolDaniel Vrátil is a Senior Principal Software Engineer with 15 years of experience specializing in C++ and Qt, currently leading high-performance backend work at Gen while maintaining a key KDE PIM component. A long-time open-source maintainer and contributor—his work spans KDE Plasma UI improvements, Qt Declarative fixes that resolved ListView and QQmlListModel regressions, and GammaRay enhancements including a 3D widget inspector—he combines deep framework knowledge with practical UI and tooling expertise. He has a track record of shipping robust, performance-focused fixes across libraries used by many Qt applications and mentoring others as a Czechitas volunteer teaching Python and web technologies. Based in Prague and educated in Informatics at Masaryk University, he pairs hands-on engineering with community leadership and a knack for finding subtle, high-impact bugs in complex UI models.
15 years of coding experience
19 years of employment as a software developer
Informatics, Informatics at Masaryk University BrnoGymnázium Teplice
English, Czech, German
Stackoverflow
311reputation
10kreached
9answers
1question
Github Skills (18)
c-language10
qt10
user-interface10
desktop10
model-view-controller10
qml10
qt-framework10
cprogramming-language10
debug9
debugging9
testing8
opengl8
xml6
listview6
android6
Programming languages (16)
Github contributions (5)
KDE/plasma-desktop
Nov 2012 - Feb 2021
Plasma for the Desktop
Role in this project:
Front-end Developer
Front-end DeveloperContributions:11 commits in 8 years 4 months
Contributions summary:Daniel primarily contributed to the user interface of the Plasma Desktop environment, specifically focusing on the Kickoff application. Their work involved aligning and centering elements within Kickoff buttons, and implementing a feature that allows customization of the Kickoff icon. The user also updated the Kicker and Dashboard configuration to include an icon chooser. Furthermore, the user fixed alignment issues in the font list view.
electronlinuxc-plus-pluschromeosdesktop
KDAB/GammaRay
Aug 2013 - Jun 2017
GammaRay is a tool to poke around in a Qt-application and also to manipulate the application to some extent.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:66 commits, 8 PRs, 19 pushes in 3 years 10 months
Contributions summary:Daniel focused on developing and improving the Qt-based GammaRay tool, contributing significantly to the widget inspector functionality. They worked on implementing a 3D widget view, including initial model and view implementations. Their work involved fixing depth calculations and adapting the code to the latest Qt3D API changes. Additionally, the user refactored the UI and enhanced the user experience by adding features like wireframe mode and highlighted object selection.
qmlextentqt5pokekdab
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