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Marc Seitz

Hi, I’m Marc

…and I work for the next generation of makers.

Tech is reshaping how we learn and come together. Software is ubiquitious and every person can now build their way to a future that inspires them. However, today’s world isn’t designed to work for these makers creating an imbalance between the impact they’re capable of, and what’s expected of them.

I’m working to solve this problem…

  • by creating better tools at Sdui for education and formerly at Hackerbay for hackers and companies;
  • by building communities, formerly as co-founder of Hackevents organizing hackathons across Germany, now by mentoring at hackathons around the world;

…and through one commit at a time.

Currently, I am working as Head of Engineering at Sdui. It’s an amazing gig where I get to work alongside great developers on a software product that has become an integral medium upon which tens of thousands of teachers, parents and students rely to guarantee essential communication.

I’m currently living in Helsinki, Finland. Some other places I’ve lived in are Berlin, San Francisco, Hong Kong, Toronto, and Munich.

I’m a huge physics nerd, in particular cosmology. I wrote about the accelerating expansion of the universe, or better know as Dark Energy here.


I founded and built Hackerbay as CTO with three awesome friends. We took a small insight from hackathons – software is not a 12 month development cycle – and built up a B2B company. We worked with Twitter, Vodafone, Allianz and some of Germany’s largest corporations. With NFX we had incredible investors on board and always an open ear from James, Pete, or Gigi.

After five years of immense personal and professional growth, priorities changed and we decided to pursue new opportunities, where each of our personal strengths are best put to use.

For me that’s building tools for enabling the next billion developers.

Let’s connect

I’m most active on Twitter and GitHub but you can also find me on LinkedIn. The best way to contact me is either through Twitter, or my email at my first name @ – my DMs and inbox are always open.