For us quality is in the foreground! We work on our projects with passion and a project is only finished when it is perfect. IT products are usually complex, but are also extremely relevant to everything around us - so it's worth the effort!

We support the open source community because we use a lot of open source software in our products and therefore feel obliged to give something back.

“The only thing that matters in software is the experience of the user.”

Ryan Dahl

What's important to us

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Innovation and passion

The future can come! We are prepared. We want to try out new things and learn the unknown. Standing still is out of the question for us.

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We want to show that digitization and sustainability are not mutually exclusive. Protecting our planet and developing software with foresight is a fundamental principle for us.

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Digital sovereignty

The digital sovereignty of each individual is a cornerstone of a democratic digitalized world. We place the highest demands on ourselves and our work to protect the security and privacy of the data entrusted to us. In doing so, we follow the principle that the less data the better.

IT Security & Reliability

IT security is a major concern for us at l3montree. In the construction of our cloud computing infrastructures and in the development of software.

Data centres in Germany

Our server infrastructure is operated in ISO 27001 and TÜV level 3 certified data centres in Germany.

Webpräsenz der Allianz für CyberSicherheit

Member of the Alliance for Cybersecurity

l3montree is a member of the Alliance for Cybersecurity of the German Federal Office for Information Security (BSI).

Documents on data protection & IT security

Information Security Guideline

Our principles in matters of information security. DIN ISO/IEC 27001 (2015) was used in parts as a framework.

Download (DE)

Data protection concept

The data protection concept of l3montree. Transparent information on data protection at l3montree.

Download (DE)


Digitalization plays a primary role in all areas of life and we want to be a part of this future. We are students from Bonn who are passionate about exploring modern technologies and thinking big. We want to make a difference and provide people with sustainable products that solve real problems.

Sebastian Kawelke - l3montree CEO
Sebastian Kawelke

CEO & Co-Founder

Tim Bastin - l3montree CTO
Tim Bastin

CTO & Co-Founder

Frédéric Noppe - l3montree CSO
Frédéric Noppe



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The Digitalhub in Bonn (related to Digitale Wirtschaft NRW) is a supporter and partner of l3montree.
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