About us

Emarticon - profound procurement success by experience.

Emarticon is a consulting and interim management firm specializing in strategic procurement & supply management. What sets us apart is that all consultants have at least 10 years of consulting experience in their specialist area and also have many years of line experience.

Our passion is to get people and companies to work together efficiently.

Emarticon GmbH was founded with the aim of helping companies to succeed as sustainably as possible. Two insights were essential: First, in our highly technical, globalized and extremely rapidly changing world, the quality of cooperation between companies is an outstanding success factor. Second, in many companies, this factor of success is underestimated in its importance and complexity.


We have therefore developed a special approach, which is described under "Why us?" as well as corresponding concepts.

The name Emarticon stands for the art of good advice and good management. The art lies in not only controlling the mission rationally - based on facts -, but taking the staff with you, ideally inspiring them, i.e. not to forget the emotion.

Clemens Rinnebach
Senior Advisor & Manager
Managing Director
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Clemens Rinnebach studied Electrical Engineering at the Leibniz Universität Hannover and Finance at the University of Pennsylvania, The Wharton School. He worked as management consultant at the Boston Consulting Group (Boston Consulting München and San Francisco) and A.T. Kearney.


After having worked in the technology groups Motorola and Infineon, he gathered his line management procurement expertise at the Siemens AG and Siemens Enterprise Communications GmbH where he was responsible for purchase volume and the procurement organisation in more than 160 countries as a Vice President Strategic Procurement. At the HypoRealEstate and Deutsche Pfandbriefbank AG Clemens Rinnebach led Sourcing to become a key lever for the turn-around programme of the bank. Thereafter, he was Head of Sourcing at Allgeier SE, an IT-group with approx. 7000 employees.

Clemens Rinnebach works as an independent management consultant and interim manager since 2015 and is Senior Advisor and Managing Director of Emarticon GmbH.

Clemens Rinnebach did Judo for more than twenty years. Today, he loves fitness sports, skiing and enjoys nature. His special interest is the combination of physics and philosophy. He actively supports World Vision. In the network initiative Ivy Circle Germany he is committed to the cultural and social exchange of American and British universities.

Dr. Andreas Schulz
Senior Advisor & Manager
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Andreas Schulz studied mechanical engineering at the Technical University of Munich and then did his doctorate in engineering. He holds an MBA in finance from Harvard University. He gained essential knowledge of strategic management consulting through his work for McKinsey in the USA and Germany.

He then worked for both Siemens AG and EADS in international procurement management functions. In this responsibility, he succeeded above all in driving the digitization of the organizations and adapting the global positioning and procurement strategy to the requirements.

Andreas Schulz has been working as an independent management consultant and interim manager since 2013 and is a Senior Advisor at Emarticon GmbH.


Andreas Schulz is an enthusiastic mountaineer and hobby musician.

Carmen Lange
Advisor & Manager
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Carmen Lange studied Computer Science at the TU Berlin and Environmental Sciences at the London School of Economics and Political Sciences. A major focus of her studies was computer-based data analysis. She started her professional career at IBM as a product engineer and worked for Bain for almost six years, most recently as a manager.

After working in management consulting, Carmen Lange joined ABB as a senior manager. There it was your main task to provide process and data optimization for the customer. Carmen Lange subsequently worked at SAP as Director Product Management and Director Product Strategy. The main focus of her work there was on optimizing the products in the area of procurement and supply management. As an independent consultant, she subsequently successfully supported several medium-sized companies in e-procurement / digitization.


Carmen Lange has worked as an Advisor and Manager at Emarticon GmbH since 2020.

In private, Carmen Lange is committed to climate protection and likes to use free time to go to concerts, read or cook.