About the Authors

Stefan Herrlich, Managing Partner

LANCOM Managing Partner Stefan Herrlich

Stefan Herrlich, Managing Partner

Stefan looks back on a long-standing international career in the telecommunications business. He joined the Siemens AG in Cologne, Germany in 1988 as a Sales Engineer for Enterprise Communications Systems. In the 1990s, he held various management positions in Sales and Marketing at Siemens AG in the United States, Hong Kong, China and London. Stefan then managed the global Telecommunications Solutions business for business customers in the Enterprise Networks unit at Siemens AG and was appointed General Manager of the Siemens Enterprise Communications joint venture. He joined the managing board of LANCOM Systems in 2012 and has been a co-owner since 2013. Stefan holds a Master’s degree in Telecommunications and Information Processing from the University of Applied Sciences in Cologne, Germany.


Ralf Koenzen, Founding Managing Partner

Ralf Koenzen, Gründer und Geschäftsführer LANCOM Systems

Ralf Koenzen, Founding Managing Partner

Ralf started his professional career in 1984 when he founded the Höffken & Koenzen Datenkommunikation GmbH in Mülheim an-der-Ruhr, Germany. Eight years later in 1992, he became department manager of ISDN development of ELSA GmbH in Aachen, a then leading manufacturer of video cards and PC peripherals in Germany. Three years after that, he took over the management of the Communications Systems business unit at ELSA. After the management buyout of ELSA in 2002, he founded LANCOM Systems. Since then, Ralf stands for the success story of LANCOM. His many years of experience and his expertise are instrumental in the strategic development and innovative capabilities of LANCOM. In 2014, Ralf was a finalist in the “Entrepreneur of the Year” award, gaining recognition as one of Germany’s most successful entrepreneurs. Ralf studied Computer Sciences at the University of Dortmund, Germany.


Jan Buis, Vice President Wireless LAN & Switches

Jan Buis, Director Business Development

Jan Buis, Vice President Wireless LAN & Switches

Jan draws on a wealth of experience in business development, international sales and product management. He started his professional career at Lucent Technologies in the Netherlands in the late 1990s and worked as Product Manager Optical Networking. After a couple of years, Jan joined the initial WLAN development organization. He held various positions in product management, marketing and sales until he joined LANCOM Systems in 2006 as Country Manager for Benelux and one year later he became Director International Sales. In 2013, he was appointed Director Business Development in addition. Since 2014, he has been fully focusing on Business Development at LANCOM Systems. In 2017, he became responsible for the product lines WLAN and Switches at LANCOM Systems. Jan holds an international MBA (Purdue University) as well as a Master’s degree in Industrial Engineering and Management Science (Eindhoven University of Technology) and is currently a Part-time PhD Candidate at the Vrije University of Amsterdam, Holland.


Christian Schallenberg, Member of the Management Board and CTO

LANCOM CTO Christian Schallenberg

Christian Schallenberg, Member of the Management Board and CTO

Christian has extensive experience in Product Management. In the late 1990s, he started his career as Research Engineer at ELSA GmbH in Aachen, a then leading manufacturer of video cards and PC peripherals in Germany. In the early 2000s, he was appointed International Product Manager, DSL at ELSA before joining LANCOM Systems in 2002 as Executive Vice President, Product Marketing. Since 2010 he has been a member of the LANCOM Management Board and also is LANCOM´s CTO. Christian holds a MBA of the WHU Otto Beisheim School of Management and Kellogg School of Management with studies in Vallendar, Evanston and Hong Kong and a Masters degree in Communications Engineering from the RWTH in Aachen.


Martin Krebs, Director Product Management

LANCOM Martin Krebs, Director Product Management

Martin Krebs, Director Product Management

Martin has top-level expertise in Computer Science. For many years he worked as Research Assistant for the Institute of Computer Science Communication and Distributed Systems at the RWTH Aachen University, one of nine Universities of Excellence in Germany. After receiving his PhD in Computer Science in 2010 from RWTH Aachen University, he joined LANCOM Systems as Product Manager for Wireless LAN. In 2013 he was appointed Director Product Management. As an expert in his field, Martin brings his profound technical know-how to this role and is dedicated to the further development of LANCOM´s high-quality product offering.


Tarik Erdemir, Vice President Router & VPN-Gateways

Tarik Erdemir, VP Router & VPN-Gateways

Tarik looks back on more than 20 years as an engineer in the IT and telecommunications industry. He received his PhD in engineering from the Technische Unversität Berlin in 1996 and started working as Managing Partner for Sales and Marketing of Onsoft Informationsysteme GmbH the same year. In 2000 he moved to a Managing Postion at ETH AG. In 2001 he became Product Marketing Manager at NEC Philips Unified Solutions GmbH until he was appointed Head of Network Solution & UCC Business Development at Controlware GmbH in 2007 where he stayed until 2012. From 2013 until 2015 he worked as Director Product Marketing & Presales at D-Link Germany GmbH. In 2015 he became Head of Professional Service Central Europe at Arkadin Germany GmbH and since January 2018 he has been working as Vice President Router & VPN-Gateways at LANCOM Systems.

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