Marc Jansen
General Manager at terrestris GmbH & Co. KG
Bonn, North Rhine-Westphalia, Germany
Summary
🤩
Rockstar🎓
Top SchoolMarc Jansen is a seasoned software leader and General Manager based in Bonn with 15 years of experience at the intersection of open-source software and geospatial technology. He has progressed from student assistant and developer roles to head of development and GM at terrestris, demonstrating deep domain expertise in GIS, geomorphology and public-space applications grounded in a Diplom-Geograph from the University of Bonn. A pragmatic full-stack contributor, Marc has improved user-facing examples and tooling in notable open-source projects like OpenLayers and enhanced terminal UX in popular repos such as boxen. He blends hands-on coding and documentation quality work with strategic leadership, having also led mundialis as GM, and is known for quietly improving developer experience through careful refactoring and documentation fixes. Colleagues appreciate that he champions FOSS and geospatial openness while still enjoying approachable, detail-oriented engineering.
15 years of coding experience
13 years of employment as a software developer
Diploma Geography (Diplom-Geograph), Geography (GIS, Geomorphology, Public Spaces), Diploma Geography (Diplom-Geograph), Geography (GIS, Geomorphology, Public Spaces) at The University of Bonn
Github Skills (8)
html10
terminal-ui10
javascript10
front-end-development10
documentation10
openlayers10
nodejs9
css8
Programming languages (23)
Github contributions (5)
openlayers/ol2
Mar 2011 - Oct 2020
OpenLayers v2 - deprecated!
Role in this project:
Front-end Developer
Front-end DeveloperContributions:1 review, 147 commits, 4 PRs in 9 years 8 months
Contributions summary:Marc primarily contributed to the OpenLayers v2 project by addressing typos and correcting documentation within example files, which involved modifying HTML, JavaScript and CSS files. Additionally, the user updated the `<meta name="viewport">` attribute content across several example files. The user also made several non-functional changes, correcting spelling in documentation and improving API documentation.
javascriptopenlayers
openlayers/openlayers
Jun 2012 - Jan 2023
OpenLayers
Role in this project:Front-end Developer
Front-end DeveloperContributions:1 release, 43 reviews, 652 commits in 10 years 9 months
Contributions summary:Marc primarily contributed to the improvement of example files within the OpenLayers repository. Their work involved fixing spelling errors and correcting minor documentation issues within the examples. Additionally, the user incorporated the latest updates from the repository, enhancing the structure of the test files and adjusting examples to use the document object.
javascriptopenlayersgis
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