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We founded hackers&wizards GmbH on March 31st. Almost three months later, our Steuernummer arrived. A note on what it actually takes to found a company in Germany.







In December, I released the first beta version of my small operating system, [TreeOS](https://github.com/ontree-co/treeos). It is freely available on GitHub ...

Two Book Recommendations: Sorry, No Happy Endings!











A scalable SSH configuration for managing multiple machines with unique keys per connection



Home servers are back and many cloud computing offerings are a complete rip-off: DHH discovered the same seismic changes this year, and he's a genius marketer.

I'll start a weekly newsletter called "The Liquid Engineer" next week. What does it mean and what will it cover? Read on or subscribe here.

Yes, I'm out, too. After over thirteen years at XING. What. A. Ride! Grab a coffee, this deserves a longer-than-usual goodbye post.

KPIs are a business tool, only for the 9-5 grind? I thought so, too. Today, I love how they can create focus, also in the personal space. You can even communicate dependencies of goals clearly. I'll use how I got into running last year as an example.

My first post, like ever.