Tadeusz Piskozub is a Senior Frontend Developer with 13 years of experience building robust, user-focused web applications from Warsaw. He currently develops enterprise-grade frontend and full-stack solutions using Angular (up to v19), TypeScript, Node.js, PostgreSQL and Docker for pharma clients, blending modern frameworks with production-grade practices. A long-time contributor to CKEditor4, he has improved UI behavior, image upload error handling and read-only quirks—demonstrating attention to polish and legacy editor internals. His background spans fast-paced consulting and product teams (CKSource, CodiLime, Avaloq), giving him both deep component-level expertise and domain experience in analytics, security and finance. Known for pragmatic refactors and test-driven fixes, he frequently tackles tricky UI edge-cases that improve developer and user ergonomics. Fluent in RxJS/NGXS patterns and frontend testing, he pairs strong engineering fundamentals with a knack for improving complex interactive interfaces.
12 years of coding experience
5 years of employment as a software developer
Warsaw University of Technology
Polish, English
Github Skills (6)
html10
javascript10
user-interface10
web-development10
testing9
css9
Programming languages (7)
TypeScriptCSSScalaJavaScriptLilyPondRich Text FormatEmacs Lisp
The best enterprise-grade WYSIWYG editor. Fully customizable with countless features and plugins.
Role in this project:
Front-end Developer
Contributions:482 commits, 3 PRs, 36 pushes in 1 year 9 months
Contributions summary:Tadeusz primarily focused on improving the user interface of the CKEditor4 repository. Their commits addressed bugs in the file tools plugin, changed and added tests for image upload errors, and corrected a quirk related to read-only mode in the editor. They also refactored code related to the creation of spans, and worked on handling the context menu. These changes are aligned with front-end development.
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Tadeusz Piskozub - Senior Frontend Developer at 7N