Oliver Klee
CEO at oliverklee.de
Bonn, North Rhine-Westphalia, Germany
Summary
🤩
Rockstar🎓
Top SchoolOliver Klee is a CEO and seasoned software engineer with 15 years of experience, leading Brain Gourmets while running TYPO3 development and workshop services through oliverklee.de. A certified TYPO3 expert and maintainer of Emogrifier, he combines hands-on back-end work on the TYPO3 core with front-end contributions like improvements to the popular jquery-timeago plugin. His open-source focus emphasizes code quality, testing and modern PHP practices—evident from contributions to phpunit, a PHP CSS parser, and multiple TYPO3 bug fixes and unit tests. Based in Bonn, he pairs a formal Informatics diploma (with psychology minor) with practical training experience, regularly teaching workshops that translate deep technical knowledge into usable developer skills. Colleagues describe him as someone who spots subtle type and test issues early and turns maintenance-heavy projects into maintainable, future-ready code.
15 years of coding experience
Diplom, Informatik, Nebenfach Psychologie, Diplom, Informatik, Nebenfach Psychologie at Rheinische Friedrich-Wilhelms-Universität Bonn
French
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (28)
unit-testing10
parserator10
javascript10
parser10
mstest10
jquery10
testing10
timeago10
css10
teste10
get-time10
phpunit10
typehinting10
testing-library10
php10
Programming languages (20)
Github contributions (5)
MyIntervals/PHP-CSS-Parser
Apr 2021 - Jan 2023
A Parser for CSS Files written in PHP. Allows extraction of CSS files into a data structure, manipulation of said structure and output as (optimized) CSS
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 releases, 521 reviews, 134 commits in 1 year 9 months
Contributions summary:Oliver primarily focused on refactoring and improving the code base of the CSS parser. They updated the code to use PHP 5.3 and 5.6 language features. The user also added PHPDoc type annotations to the code, which aids in static type analysis. In addition, they fixed code style issues and updated URLs to use HTTPS.
cssdata-structureparserphpcomposer-package
TYPO3/typo3
Mar 2011 - Dec 2022
The TYPO3 Core - Enterprise Content Management System. Synchronized mirror of https://review.typo3.org/q/project:Packages/TYPO3.CMS
Role in this project:Back-end Developer
Back-end DeveloperContributions:224 commits in 11 years 11 months
Contributions summary:Oliver contributed to the TYPO3 core, focusing on creating unit tests and fixing bugs. Their work included implementing proof-of-concept unit tests for the `t3lib_TCEmain::process_datamap` method, which involved modifying test files and associated code. Additionally, they addressed several bug fixes in various modules such as the install tool and Extbase, resolving issues related to image file size checks, missing extension credits, and incorrect return types. They also removed commented-out code and addressed several type errors.
content-management-systemtypo3cmsphpcontent-management
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