Stefan Kruijer has more than 20 years of experience in the IT business from software development to strategic consulting. During this time he has worked for various companies. But at the same time he has always remained an independent freelancer.

His scientific education as physicist with a PhD in solid state physics in 1998 was the basis to look at the IT world not only as a developer and consultant but also with a more scientific approach.

As part of the Scientists for Future organisation he is supporting the actual efforts against climate change. In particulare he is focusing on sustainable digitalization to find ways for a more sufficient approach in the IT world.