Dennis Ollhoff @

Let's Chat!

German Version

I am incredibly fortunate to be part of the open-source community, creating tools and resources, and sharing my knowledge through YouTube and online courses. I take great pleasure in teaching about coding and cybersecurity and helping others to deepen their understanding in these areas.

If you’re passionate about contributing to open-source projects, want to improve your programming skills, or expand your cybersecurity knowledge but are unsure where to start, this is your chance. I have experience in guiding others through complex subjects and would be delighted to support you on your journey.

Quick Chat

I aim to keep conversations simple, open, and accessible. You can use the link below to book a 10-minute chat with me. During this time, we can determine the best way I can support you, whether it’s contributing to open source, deepening your knowledge in my course areas, or providing guidance on your own educational projects.


For more detailed questions and in-depth discussions, especially in the areas covered in my online courses, I also offer longer consultancy sessions. If you want to dive deeper into specific coding techniques, advanced cybersecurity topics, or need support developing your own educational content, a longer session could be ideal.

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