Thomas Landauer
Owner at https://www.online-kuendigen.at/
Vienna, Austria
Summary
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Rockstar🎓
Top School
Top expert inSymfony Development Essentials
Thomas Landauer is an experienced entrepreneur and software professional based in Vienna with over 11 years in software engineering and a track record of founding and running web-focused businesses since 1999. He combines technical writing, QA/test automation and back-end PHP expertise—contributing to high-profile open-source projects like Codeception, Symfony docs, Twig and Psalm—improving documentation, type safety and testability. Thomas has led usability work as a CEO and continues to operate two companies, blending product-focused leadership with hands-on contributions to developer tooling and libraries. His academic background in mathematics, philosophy, psychology and education informs a precise, user-centered approach to documentation and API clarity. Notably, he often tackles subtle issues—type hints, OpenSSL signatures, and cross-reference fixes—that improve long-term maintainability for widely used PHP ecosystems.
11 years of coding experience
5 years of employment as a software developer
MSc, Mathematics, Philosophy, Psychology, Education Science, MSc, Mathematics, Philosophy, Psychology, Education Science at University of Vienna
Stackoverflow
7,991reputation
573kreached
109answers
47questions
symfony
top-5%
twig
top-5%
php
top-5%
doctrine-orm
top-5%
javascript
top-5%
vuejs2
top-1%
Github Skills (36)
codeception10
static-analysis10
webdriver10
imap10
testing10
typehinting10
php10
doctrine-orm10
vuejs210
vue10
symfony10
symfony-ux10
type-checking10
documentation10
bundle9
Programming languages (17)
Github contributions (5)
barbushin/php-imap
Feb 2016 - Dec 2021
Manage mailboxes, filter/get/delete emails in PHP (supports IMAP/POP3/NNTP)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 commits, 7 PRs, 4 comments in 5 years 10 months
Contributions summary:Thomas primarily focused on enhancing the existing codebase of the PHP IMAP library. Their contributions included adding and refining PHPDoc comments for improved code documentation and readability. The user also updated and refined existing code snippets, including linking to the original source of certain code to handle potential future changes. Additionally, the user addressed compatibility issues to support PHP 8.1.
mailboxesmailsmtpphpemail
symfony/symfony-docs
Jun 2015 - Jan 2023
The Symfony documentation
Role in this project:Technical Writer
Technical WriterContributions:49 reviews, 217 commits, 338 PRs in 7 years 7 months
Contributions summary:Thomas's contributions primarily focused on improving the Symfony documentation. They fixed typos, clarified ambiguous wording, and corrected file paths. The user also added examples, clarified explanations, and provided code samples for various aspects of the Symfony framework, including templating, forms, doctrine, and the HTTP client. Furthermore, the user updated links and cross-references within the documentation to ensure accuracy and provide better navigation.
bundlephpsymfonysymfony-bundle
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