Marcel Otto
Open Source Developer at NLnet foundation
Bielefeld, North Rhine-Westphalia, Germany
Summary
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Rockstar🎓
Top SchoolMarcel Otto is an open source developer with 13 years of software engineering experience, based in Bielefeld, Germany, and a long-standing interest in Semantic Web technologies and Elixir. He created the RDF on Elixir libraries and the Ontogen version control system, blending research-grade ontology work with practical tooling. Marcel has a steady track record across academia, startups, and foundations—including roles at NLnet, Ninja Concept, and multiple German universities—bringing deep familiarity with data interoperability and knowledge representation. Trained in computer science and philosophy, he combines formal thinking with pragmatic engineering, often exploring conceptual questions as a hobby philosopher. His work reflects a preference for building reusable, community-oriented open source infrastructure rather than single-product apps.
13 years of coding experience
22 years of employment as a software developer
Computer Science & Philosophy, Computer Science & Philosophy at University of Paderborn
Stackoverflow
31reputation
710reached
1answer
0questions
Github Skills (174)
structures10
table-of-contents10
semantic-web10
code-analysis10
shacl10
commonmark10
owl10
haskell10
markdown10
javascript10
markup-language10
knowledge-graph10
scalable10
json10
markup10
Programming languages (8)
Github contributions (5)
rdf-elixir/sparql-ex
Sep 2017 - Nov 2022
An implementation of SPARQL for Elixir
Contributions:283 commits, 3 PRs, 137 pushes in 5 years 2 months
sparqlelixirrdf
marcelotto/sycamore
Mar 2015 - May 2018
Contributions:216 commits, 2 PRs, 38 pushes in 3 years 2 months
data-structurerubytree-data-structure
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