Serlo Editor (2022 - present)
Lead Software Developer
Together with others, I enable teachers to create high‑quality
learning materials as easily, quickly, and reliably as possible.
To this end, we develop the
Serlo Editor, a
web‑based editor for interactive learning materials.
The core challenge is combining an intuitive WYSIWYG user
experience, comparable to Word, with the ability to create highly
structured content. The Serlo Editor is, to the best of our
knowledge, the only project that achieves this.
serlo.org - The Open Learning Platform (2020 - 2025)
Lead Software Developer and Co-Founder
Serlo.org is a non-profit platform
offering free, openly licensed learning materials for students and
teachers. It aims to ensure equitable access to high-quality
education through community-driven content creation.
At serlo.org, I led a development team of up to twelve engineers.
During this time, we rebuilt the entire platform using a
Next.js/React frontend and a Node.js backend (GraphQL). As a
co-founder, I was also involved in organizational leadership,
including areas such as fundraising and financial planning.
Open textbook "Mathe für Nicht-Freaks" (2009 - present)
Founder & Author
I am driven by the conviction that every university student should
be able to understand mathematics. Guided by this vision, I
founded the open textbook
“Mathe für Nicht-Freaks”
(“Maths for Non-Freaks”).
We reach this vision by teaching the intuition and motivation
behind abstract mathematical concepts and by disrupting the
definition-theorem-proof scheme of mathematical education in
universities. We estimate that we
reach ~30%
of first-semester university students in STEM fields in Germany.
