Björn Schießle
Computer Scientist (Dipl. Inf.), graduated at University of Stuttgart
Creating free, decentralized and open cloud technology at Nextcloud
Free Software (aka Open Source) educator and advisor
Speaker and writer about technology enabled political and social change
FSFE's Deputy Coordinator Germany and member of the General Assembly

What you do makes a difference, and you have to decide what kind of difference you want to make.
‒ Jane Goodall


As a child science kits were always one of my favorite toys. This way I discovered already early in my life the world of biology, chemistry, electronics and other exiting stuff. I was always driven by the childlike curiosity to understand how things work instead of just using it. Today I'm still like that. That's probably also the reason why my first computer soon lead me down the rabbit hole in the world of programming and Free Software (aka Open Source).

During my education and professional career I collected deep knowledge about programming and the design and architecture of software systems. After I graduated I joined the university as a researcher in the area of Cloud Robotics. During this time I learned a lot about academic research and writing and enjoyed the challenge to solve complex tasks. Today I work at Nextcloud. I develop and maintain various parts of a large and complex Free Software solution which provides universal access to data stored in the cloud without losing control or privacy. My volunteer work helped me to understand the value of Free Software and Open Standards. Over time I developed a deep knowledge about software licenses. Today I'm fascinated about how technology shapes our society and how society can shape technology. Free Software is not just a black-box people can use, but it enables everyone to understand it and adapt it to his needs. In a world driven by technology this are important rights for individuals, organisations and big enterprises. I love to discuss this new possibilities, attend related trade shows and think about how Free Software can enable a business to grow.

If I look back at the end of a working day I want to have the feeling that I did something useful for my company, our customers and for the society as a whole. That's why I love working with people from all over the world in a open and collaborative environment, driven by Free Software and Open Standards.


University of Stuttgart

Diplom (equivalent to M.Sc.), Computer Science



Nextcloud GmbH
6/2016 - Present

Senior Software Engineer

Engaging with a globally distributed community, encourage them and help them to get involved is a vital part of my daily work in a company build around a healthy and diverse Free Software (aka Open Source) project. As a senior software engineer I'm working on the server component of Nextcloud using object oriented PHP, JavaScript, HTML and CSS. One of my main responsibilities include moving the concept of Cloud Federation to the next level, a technology which enables a complete new way to collaborate in a free, distributed and open way without losing control over personal and sensitive data. Beside that I serve as a Free Software and licensing expert at Nextcloud.

Free Software Foundation Europe (FSFE)
9/2015 - Present

Deputy Coordinator Germany (voluntary)

Coordinate the activities of the German country team at FSFE to promote Free Software in order to enable people to control the technology they use.

Free Software Foundation Europe (FSFE)
2006 - Present

Member of the German Country Team and the European Core Team (voluntary)

Educate people about the political, social and economical implications of Free Software (Open Source) and Open Standards. I give talks at various trade shows and other events about Free Software and related topics. Occasionally I talk to political parties, their youth organizations and companies to advise them about Free Software and licensing.

ownCloud Inc.
6/2012 - 5/2016

Senior Software Engineer

My responsibilities include maintaining and expanding the core of ownCloud along with working with a globally distributed community of contributors using object oriented PHP, JavaScript, HTML and CSS. I'm the maintainer of various core modules including server-side encryption, deleted files, versioning and sharing.

University of Stuttgart
2010 -5/2012


Working at the RoboEarth project which is part of the Cognitive Systems and Robotics Initiative from the European Union Seventh Framework Programme FP7/2007-2013. Developing a distributed web-based platform which enables robots to share reusable knowledge about actions, objects and environments.


Werkzeugkasten Freie Software - Einführung in die Grundlagen Freier Software zusammen mit einer Sammlung von sinnvoller Software, mit der Unterricht in einem digitalen Zeitalter gestaltet werden kann. Autoren: Volker Grassmuck, Daniel Rohde-Kage, Björn Schießle, Stefan Schober, Sebastian Seitz, Wolf-Dieter Zimmermann (2016)

Freie Software – Ein wachsender Faktor in Wirtschaft und Gesellschaft. Erschienen im Handbuch der Unternehmensberatung, 2013, Band 2, Kennzahl 3410, Erich Schmidt Verlag

Creating and using roboearth object models. CRA, pages 3549–3550, 2012. Daniel Di Marco, Andreas Koch, Oliver Zweigle, Kai Häussermann, Björn Schiessle, Paul Levi, Dorian Gálvez-López, Luis Riazuelo, Javier Civera, J. M. M. Montiel, Moritz Tenorth, Alexander Clifford Perzylo, Markus Waibel, and René van de Molengraft

Server-sided automatic map transformation in roboearth. AMS, pages 203–216, 2012. Alexander Clifford Perzylo, Björn Schießle, Kai Häussermann, Oliver Zweigle, Paul Levi, and Alois Knoll.

RoboEarth - A World Wide Web for Robots. IEEE Robotics and Automation Magazine (Special Issue Towards a WWW for Robots), 2011. Accepted - Waibel, M., Beetz, M., D’Andrea, R., Janssen, R., Tenorth, M., Civera, J., Elfring, J., Galvez-Lopez, D., Häussermann, K., Montiel, J.M.M., Perzylo, A., Schießle, B., Zweigle, O., and van de Molengraft, R. (2011)

Using Situation Analysis Techniques with Bayesian Networks for Recognizing Hardware Errors on Mobile Robots - Oliver Zweigle, Kai Häussermann, Björn Schiessle and Paul Levi (ICRA 2011)


FSFE FIfF EDRi Digitale Gesellschaft e.V.