About

Hi, I’m Waldemar - a Scala & Big Data engineer from Warsaw with 15+ years of commercial experience in banking, fintech and the public sector.

This is my tech blog: software development and everything around it - tools, hardware, operating systems and the way we work.

Outside of work I’m a father and a motorcyclist ;)

Scala for the win

Scala is the best JVM language out there, and it has been my main language for over 10 years. It runs on the JVM, in web browsers and natively. Lately I spend my open source time on Scala tooling for HOCON configuration files.

Latest Blog Post

18 Aug 2026 . hardware . Two screens never add up to one Comments

Two 27-inch monitors have less panel and fewer pixels than one 40-inch monitor, plus a seam down the middle that nobody can move. The standard two-screen desk is not more screen. It is less screen, cut in half.

That half of the argument is just arithmetic, and it is in the table below. The half people raise an eyebrow at is that mine stands up - a 40-inch 16:9 on an arm, rotated by 90 degrees, which is how it spends most of its life. Four years ago I wrote...

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Timeline

  • 2013

    Met Scala - my main language ever since.

  • 2008 - today

    Software developer in banking, fintech and the public sector.

Contact

You can request my CV by email - it includes my phone number. You can also find me in the Scala Poland community.

Job offers are welcome. The best first message tells me about the project, the team and the tech stack.