Tim Weissenfels
Automobilvertrieb at Procar Automobile GmbH
Cologne, North Rhine-Westphalia, Germany
Summary
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Rockstar🎓
Top SchoolTim Weissenfels is an accomplished automotive sales professional based in Cologne with 11 years of practical experience bridging technical automotive expertise and customer-facing roles. Trained as a Kfz-Mechatroniker and further qualified as a Kfz-Meister and Betriebswirt im Kfz-Gewerbe, he has consistently ranked among top performers at Procar Automobile GmbH, earning multiple BMW Bank honors and top-club sales distinctions. Beyond sales, Tim contributes to web technology projects on GitHub, improving MDN Web Docs content and strengthening test coverage for PostCSS—evidence of a disciplined, detail-oriented approach to documentation and quality assurance. This combination of hands-on mechanical training, business education, frontline sales success, and open-source contribution gives him a rare blend of technical credibility and customer trust. He excels at translating complex technical details into clear guidance for buyers and colleagues, making him a valuable bridge between workshop realities and commercial outcomes.
11 years of coding experience
Betriebswirt im Kfz-Gewerbe, Betriebswirt im Kfz-Gewerbe at Bundesfachschule für Betriebswirtschaft im Kfz-Gewerbe (BFC) e.V.Kfz-Meister, Kfz-Meister at Handwerkskammer LeipzigKfz Mechaniker, Kfz Mechaniker at BMW Hakvoort
Stackoverflow
1,239reputation
120kreached
18answers
6questions
Github Skills (26)
javascript10
testing10
css10
mdns10
mdc10
typescript10
postcss10
mdt10
typescript-types10
html10
typescripts10
web-development10
documentation10
webworker9
svg9
Programming languages (11)
Github contributions (5)
mdn/content
Feb 2021 - Aug 2021
The content behind MDN Web Docs
Role in this project:
Technical Writer / Content Strategist
Technical Writer / Content StrategistContributions:7 commits, 13 PRs, 4 comments in 6 months
Contributions summary:Tim primarily contributed to the MDN Web Docs repository by refining and improving existing documentation. Their work focused on clarifying explanations, fixing wording, removing outdated information, and updating code examples, particularly for web API and CSS documentation. The contributions spanned multiple areas including WebSockets, CSS, SVG, and Web Workers, suggesting a broad understanding of web technologies. The edits demonstrate a focus on enhancing clarity and accuracy for developers.
cssjavascriptreferencefundamentalsmdn
postcss/postcss
Jan 2024 - Feb 2024
Transforming styles with JS plugins
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:2 reviews, 4 PRs, 4 comments in 4 days
Contributions summary:Tim focused on improving the test suite for the PostCSS project. They added a new unit test for at-rules, ensuring the correct behavior when an at-rule lacks a body, and fixed existing tests related to visitor functionality and the handling of nodes. Additionally, they adjusted several tests to align with changes in the codebase, ensuring the tests accurately reflected the intended behavior of the PostCSS library. These changes contribute to maintaining the quality and reliability of the PostCSS codebase.
cssframeworkpostcssaststyles
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