Collax team

The vision and mission are elementary to every future-oriented enterprise. At the same time, however, the people in the company are the ones who actually apply and realize these values. We are proud of our competent, dedicated, and dynamic team. 

Falk Birkner | CEO

Back in 2009, I joined Collax as Sales Manager. In my current capacity as Director, I am responsible for the company's strategic and operational orientation. The hands-on mentality and the still obvious start-up character of Collax make our work exciting and effective. I am happy to be able to lead such a dedicated team.

+49 (0) 89-99 01 57-0
falk.birkner [at]

Karin Denz | Sales Manager Renewals

After our innovative solutions are developed and placed, I pick up the ball. As Sales Manager Renewals, I accompany our customers for many years. The responsibility for all licenses sold as well as the possibilities of my autonomous operations represent a challenge that I thoroughly enjoy.

+49 (0) 89-99 01 57-0
karin.denz [at]

Stefan Kaysersberg | Team Leader Support

I am familiar with all products from their beginnings. This enables me to provide individual assistance when we receive support requests. I greatly appreciate the various challenges and the collaboration with our young, dynamic support team. In my private sphere, I also look for new challenges all the time, and I take part in numerous sports competitions.

+49 (0) 89-99 01 57-600
support [at]

Stefan Uhl | Support

What I particularly like about my support work is the combination of the technical and the human component. I enjoy helping our customers and partners with their IT problems. This activity presents new challenges every day. Like many of my colleagues, I like exercising for a change. I start my day with a short bicycle tour to our office in Freiburg.

+49 (0) 89-99 01 57-600
support [at]

Alexander Decker | Office Manager | Sales Assistant

At Collax, flat hierarchies and friendly colleagues create a pleasant work environment. To me, working for Collax GmbH means coordinating a multi-faceted, wide range of duties. Trained in IT-commerce I can perfectly apply my previously gained knowledge and experience to my tasks as Office Manager and Sales Assistant.

+49 (0) 89-99 01 57-49


Petra Kistner | Marketing Manager

Working at Collax means being part of a compentent and  motivated team. Thanks to the management and the knack for the market Collax provides innovative products designed for small and mid-sized companies. Knowing their needs in detail we are able to translate their requirements into added-value projects.

+49 (0) 89-99 01 57-36



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