datavisyn was founded by four leading scientists in the field of visual data science for biomedical informatics.

Marc Streit (Johannes Kepler University Linz), Samuel Gratzl (formerly Johannes Kepler University Linz), Alexander Lex (University of Utah), and Nils Gehlenborg (Harvard Medical School).

Marc, Sam, Alex, and Nils have collaborated on dozens of research papers and released many open-source software packages for biomedical data analysis. While we love research and remain committed to open source, we created datavisyn to make the latest scientific and technological advances available to commercial entities and provide services – such as data integration and custom solutions – that are not possible in an academic context.

Leadership Team

Marc Streit

CEO & Co-Founder

Full Professor of Computer Science at Johannes Kepler University Linz

Dominic Girardi

CPO & Data Scientist

Alexander Lex

Co-Founder & Scientific Advisor

Associate Professor of Computer Science at the University of Utah

Nils Gehlenborg

Co-Founder & Scientific Advisor

Associate Professor of Biomedical Informatics at Harvard Medical School

Samuel Gratzl


Company Values

Inclusiveness — datavisyn champions inclusiveness and encourages all members of the team to contribute in their own way.

Teamwork — We excel only as a team. We build on each other’s strengths and learn from each other’s mistakes.

Openness — We are always open to ideas and requests from each other and invite everybody to speak up.

Excellence — We are committed to delivering innovative solutions with cutting-edge technology.

Integrity — From our open-source code to our shared scrum boards for agile teams, integrity and transparency are intrinsic to our work.

Commitment — Commitment is a key principle not only of agile software development, but also of all datavisyn endeavors.

Team Statements

I am a Lead UX Engineer at datavisyn and I really enjoy working here. I especially like the team spirit—everybody supports each other at all levels. My daily work is diverse as it includes front-end and back-end development as well as UI and UX tasks. I’m very happy to contribute to different customer and research projects where I can apply and further develop my knowledge and skills.


I’m Lead Scientist & Software Engineer at datavisyn. I enjoy it because of the diversity of my tasks—every day is different. On the one hand, I collaborate with other researchers from academia on projects to create new visualization and visual analytics approaches that can improve our products in a later stage. On the other hand, I develop and tailor the Ordino product together with my colleagues for our customers’ success. I also like that we can use the latest technologies to build and deliver web-based visualizations and that I can work with great people in house and around the world.


Introductory Video

See our CEO Marc and our CPO Dominic, introduce datavisyn (in German).


datavisyn is located in the Science Park 4 on the campus of the Johannes Kepler University in Linz, Austria.

Get directions