Board of Directors

 Celestine Kleinesper 1. Chairwoman

Celestine Kleinesper holds a B.A. in education and is currently working on the Trends in International Mathematics and Science Study (TIMSS) at the Education Systems Evaluation Unit.

Through her broad range of activities in the project Synergies for Teaching and Learning through Open Educational Resources (SynLLOER), funded by the Federal Ministry of Education and Research (BMBF), in the Media Center of the Faculty of Education, and at the Hamburg Open Online University (HOOU), she has diverse experience in the field of open education and digital education. As an independent expert, she advises stakeholders from the education sector and the private sector and designs individual workshops and digital concepts. 

As a founding member and 1st chairperson of the Open Education and Software Association e. V. (OESA), she is responsible for internal organization, public relations, human resources and project coordination. In terms of content, she designs Open Educational Resources with a special focus on the didactic added value of digital tools.


 Fabian Neuschmidt, Vice Chairman

Fabian Neuschmidt is a mechanical engineer (B.A.) and was involved in the e-gnition project for autonomous driving, among others. He started the open source project coala back in 2013 and was funded by Exist for the startup GitMate, of which he was CEO. He serves as CTO and developer for Viperdev. For OESA e.V. he coordinates software projects and is responsible for financial and strategic projects as a founding member and vice chairman.



 Katharina Mosene, Employee

Katharina Mosene is a political scientist (M.A.) and is responsible for research and event collaborations at the Leibniz Institute for Media Research | Hans Bredow Institute (HBI) since July 2019. She is also associated with the Humboldt Institute for Internet and Society (HIIG) and the Network of Centers.

At the TUM Medical Education Center of the TU Munich, she supports the area of digital education / digital literacy. Her focus in the area of digital education is on the complex of digital didactics, online tools and interactive teaching/learning methods, strategically oriented towards the inverted classroom approach. In addition, she has a special interest in Open Education and OER.

She is involved in consumer protection and Internet security at Deutschland sicher im Netz e.V. under the auspices of the German Federal Ministry of the Interior and offers freelance webinars and workshops on the topics of digitization, data protection, media education and political education.

She is also active on the board of netzforma* e.V. – Verein für feministische Netzpolitik (Association for Feminist Net Politics), where she takes an intersectional feminist approach to the issues of discriminatory surveillance and control technologies, public digital space, and questions of access to and participation in the Internet.

Her research interests at HBI include a critical approach to looking at Internet regulation as well as a gender-theoretical approach to artificial intelligence, digital violence, and hate speech. 

At OESA e.V. she takes care of the strategic orientation and further development of the association, is responsible for networking activities, events and the establishment of workshop formats.


Chelsea Hegner is a sociologist (B.A.) and responsible for the administration of the association’s own educational materials at OESA e.V.. Previously, she worked in the field of growing up in digital media environments and was involved in the international comparative study “Online experiences of 9- to 17-year-olds. Results of the EU Kids Online Survey in Germany 2019” in the EU Kids Online project.