Founder & Managing Director
Ralf Koenzen (born 1965) founded LANCOM Systems in May 2002. Ralf Koenzen started his professional career in 1984 with the founding of the Höffken & Koenzen Datakommunikation GmbH in Mülheim an-der-Ruhr, Germany. Eight years later in 1992, he joined ELSA in Aachen as department manager of ISDN development. ELSA proved to be the springboard for his subsequent career. After three years in 1995, he took over the management of the business unit Communication Systems. The management buyout of this business unit from ELSA AG in 2002 laid the foundation stone for LANCOM Systems.
Since then, Ralf Koenzen stands for the success story of LANCOM Systems. His many years of experience and his expertise are instrumental in the strategic development and innovative capabilities of the German network-technology manufacturer.
In 2014, Ralf Koenzen was a finalist in the “Entrepreneur of the Year” award, gaining recognition as one of the Germany's most successful business personalities. Since July 2018, he not only manages LANCOM’s business activities, but has also been heading the “Networks & Cybersecurity” division of Rohde & Schwarz GmbH & Co. KG.
Ralf Koenzen studied Computer Science at the University of Dortmund, Germany. He is married and has two children.
Extended management board, Chief Technology Officer
Christian Schallenberg (born 1966) became authorized signatory and CTO on the Management Board responsible for the products and solutions of LANCOM Systems in 2010.
In 1996 he joined the Workstation Computer Graphics Development department at ELSA AG and later researched the first commercial ADSL router. He moved on to various positions in product management, and has headed this department at LANCOM Systems since its foundation in 2002.
Christian Schallenberg studied communications engineering (graduate engineer) at the RWTH Aachen University and business administration (MBA) at the WHU in Vallendar, the Kellogg School of Management in Chicago, and the HKUST in Hong Kong. He is married and has two children.
Extended management board, Chief Financial Officer
Lothar Kronen (born 1963) became CFO and authorized signatory at LANCOM Systems in January 2008.
Lothar Kronen started his professional career in the IT department of the Westdeutsche Landesbank in 1989. He then spent more than 6 years with the Czewo Full Filling Service group, a contract service provider producing personal care items. Shortly after joining the company, he took over as CFO at one of the four production sites.
In 2001 Lothar Kronen moved to the Aachen site of the automotive supplier Hutchinson GmbH, where he worked as CFO. In 2007 as Finance Director, Lothar Kronen oversaw the sale of the listed company Parsytec AG to ISRA Vision AG.
Lothar Kronen studied business administration at the University of Cologne with a focus on finance, taxation and informatics. He is married and has two grown-up children.
Dr. Ulrich Halka
Extended management board, Chief Operating Officer
Dr. Ulrich Halka (born 1964) has been a member of the extended Management Board since August 2019 and is responsible for the Support, Service and Training departments.
Prior to joining LANCOM in 2018, he held a leading position at Rohde & Schwarz GmbH & Co. KG. His career path has seen him in responsible roles at AEG, Nokia—where he was managing director of the German headquarters—and Accenture.
Ulrich Halka studied electrical engineering (Dr. Ing.) in Bochum, Germany, where he majored in information and communication technology and digital signal processing.
He is married and has two children.
Extended Management Board, Chief Marketing Officer
Uwe Greunke (born 1966) has joined LANCOM Systems in 2021 as CMO in the executive management team responsible for marketing.
Uwe Greunke has been working in the field of marketing and strategy for more than 25 years, focusing his career on the agency/service provider side. He has worked for international agencies such as Pixelpark, where he was Managing Director of the Hamburg office. He also worked as an Engagement Manager at McKinsey. For the last 10 years, Uwe Greunke has held responsible marketing roles for international medium-sized companies such as Sennheiser and Designa.
Uwe Greunke graduated as a media engineer (Dipl. Ing.) at the Stuttgart Media University as well as a postgraduate degree in industrial engineering with a focus on marketing. In addition, he is the author of books including "ReNew Marketing", which was published by SpringerGabler.
He is married and has two children.