„I want to support people in finding their own path to the future. I regard training as the key to this – in Germany and beyond.“

Dr Daniel Büttner

Clients of COLCONS – Corporate Learning Consultants

Trainings throughout Germany and internationally for the following companies and institutions

  • BBA – Akademie der Immobilienwirtschaft e.V.
  • Berlin Chemie AG
  • Berliner Polizei (Berlin Police)
  • Bio Company GmbH
  • BSR Berlin city cleaning companies
  • Federal Ministry of Economic Affairs Berlin
  • DKB Deutsche Kredit Bank
  • DIHK – German Chamber of Commerce and Industry/ Project VETnet
  • E.ON AG
  • Gegenbauer® Services GmbH
  • GIZ Gesellschaft für internationale Zusammenarbeit, Namibia
Gegenbauer® is a registered trademark of Gegenbauer Holding SE & Co. KG.
  • gsub-Gesellschaft für soziale Unternehmensberatung mbH (gsub Social Business Consultancy)
  • G&H Bankensoftware AG – Bancos (Developer for Banking Software)
  • HWTK University of Economics, Technology and Culture, Berlin
  • IHK Berlin (Chamber of Commerce and Industry)
  • Media Markt GmbH
  • Mercedes-Benz Bank AG
  • Emergency service Berlin e.V.
  • Siemens AG
  • Sparda-Bank eG
  • swisscontact – Organisation for the realisation of international development projects
  • Takeda AG
  • Verlag Der Tagesspiegel GmbH (Publishing house Der Tagesspiegel GmbH)
  • Centre for International Peace Operations (ZIF) gGmbH
  • Zalando SE

German Chambers and Delegations of Commerce Abroad in

  • India
  • Kenya
  • Nigeria
  • North Macedonia
  • Russia
  • South Africa
  • USA (German American Chamber of Commerce of the Southern U.S.)

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02.06.2022 | Melanie U.

Dr. Daniel Büttner knows how LEARNING works and implements this 100% in his seminars. This was, so far, the best live online seminar I have attended.

Very entertaining. Super prepared. Plenty of opportunities to get involved. Great explanations so that the knowledge sticks.


07.04.2022 | Linda H.

An all-around successful seminar, also web-based. Every day was exciting, varied and instructive.
A mentor who implements, clearly and successfully communicates content.
In this sense, thank you very much for this 🙂


09/30/2019 | Patrick

Daniel was a very attentive trainer who, despite the time pressure, took all questions and comments into account.
I was lucky to have him as my coach. He has changed my idea of training, and I am sure it will make a significant impact on dual vocational training in my institution
and the entire country of Kenya.