Dariusz Jarzębski
Senior Software Engineer at CKSource
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolDariusz Jarzębski is a Senior Software Engineer with 11 years of professional experience, currently focused on front-end development at CKSource in Warsaw. He has steadily progressed from junior roles to senior engineering, contributing significant UX and table-editing features to the widely used CKEditor projects and improving both code and documentation. His background in quantitative methods and information systems (SGH Warsaw School of Economics) gives him a data-informed approach to UI problems and testing. Notably, he combines hands-on JavaScript/CSS fixes with technical writing, ensuring features are both robust and well-documented. Colleagues value him for attention to detail—fixing subtle UI regressions like resizer handlers—and for strengthening editor behavior around complex HTML table structures.
11 years of coding experience
3 years of employment as a software developer
Magister (Mgr), Metody Ilościowe w Ekonomii i Systemy Informacyjne, Magister (Mgr), Metody Ilościowe w Ekonomii i Systemy Informacyjne at SGH Warsaw School of Economics
English, Spanish
Github Skills (10)
html10
css10
javascript10
user-interface10
ckeditor10
documentation10
ui-components10
testing10
html-editor9
wysiwyg8
Programming languages (4)
Github contributions (5)
ckeditor/ckeditor4
Feb 2019 - Jul 2021
The best enterprise-grade WYSIWYG editor. Fully customizable with countless features and plugins.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:121 reviews, 780 commits, 90 PRs in 2 years 4 months
Contributions summary:Dariusz primarily focused on front-end development within the ckeditor4 repository. They contributed to the styling and functionality of the rich-text editor, specifically addressing and fixing issues related to UI components, such as preventing the display of a resizer handler. Their work involved making changes to JavaScript files and CSS rules for improved visual presentation.
wysiwyg-editorbbcodetinymcequilljavascript
ckeditor/ckeditor4-docs-samples
Oct 2019 - Jan 2021
Code samples for the official CKEditor 4 documentation (https://ckeditor.com/docs/ckeditor4/)
Role in this project:Technical Writer
Technical WriterContributions:6 commits, 5 PRs, 3 pushes in 1 year 3 months
Contributions summary:Dariusz primarily focused on updating documentation and code samples within the CKEditor 4 documentation repository. Their commits involved modifying existing code samples and adjusting paths to stylesheets and documentation references. They also updated license headers and made general improvements to tutorial examples.
ckeditortlackeditor5ckeditor4
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