Marcel Arentz
Head Of Product at Checkmk
Gießen, Hesse, Germany
Summary
🤩
Rockstar🎓
Top SchoolMarcel Arentz is a product-focused technology leader with nine years of experience shepherding monitoring software from hands-on engineering to strategic product leadership at Checkmk, where he progressed from IT consultant to Head of Product. He blends back-end development and DevOps expertise—contributing bug fixes, performance improvements, GUI polish, and tests to the popular open-source Checkmk project—with strong documentation and team leadership. Based in Gießen, Germany, Marcel has a practical systems background (Windows/Linux, storage, virtualization, multi-site support) that informs pragmatic product decisions and developer-facing features. Colleagues benefit from his interdisciplinary outlook—rooted in studies of philosophy and sociology—which helps him translate technical complexity into clear user value. He’s known for shipping measurable improvements and for pairing passion-driven craftsmanship with operational reliability.
9 years of coding experience
ohne Abschluss, Ingenieurinformatik, ohne Abschluss, Ingenieurinformatik at Technische Hochschule MittelhessenBachelor of Arts - BA, Philosophie, Soziologie, Erwachsenenbildung, Bachelor of Arts - BA, Philosophie, Soziologie, Erwachsenenbildung at Justus Liebig University Giessen
German, English
Github Skills (8)
monitoring10
python10
front-end-development9
configuration-management8
testing8
apidoc7
api7
documentation6
Programming languages (5)
Github contributions (5)
Checkmk/checkmk
Sep 2016 - Nov 2022
Checkmk - Best-in-class infrastructure & application monitoring
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:6 reviews, 771 commits, 10 PRs in 6 years 2 months
Contributions summary:Marcel primarily contributed to bug fixes and feature enhancements for the Checkmk monitoring system. Their work included fixing issues in the GUI, improving performance, and adding new functionality to existing features. The user also addressed typos and improved output in various agent-based plugins and configurations. Furthermore, the commits show contributions in tests.
checkmksecurityin-classinfrastructuremonitoring
Checkmk/checkmk-docs
May 2020 - Dec 2022
Checkmk user manual
Contributions:1 review, 655 commits, 2 PRs in 2 years 7 months
checkmkmanualuser-manual
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