Dr. Thomas Hornung

Chief Technology Officer and Chief Product Officer

Dr. Thomas Hornung has been an advisor of Sonim since 2002 and has served as Sonim’s Chief Technology Officer and Chief Product Officer since June 2011. Dr. Hornung has more than 25 years of experience in telecommunication-, IT- and media-/content- high tech industry. Dr. Hornung holds a diploma in semiconductor physics and environmental techniques and received a PhD in natural science.


Dr. Hornung has held other several other executive positions during his nearly 30 years career, most notably as CEO of Esmertec AG. From 1997 to 2001, Dr. Hornung was a managing director of Debitel AG, where he was a member of the Debitel AG IPO team and held the role of Chief Technology Officer and Chief Product Officer.


Dr. Hornung held in-between a number of executive positions during a 14 year career at Siemens AG, most notably as the Senior VP and General Manager at Siemens AG from 2001 to 2005, where he was in charge of its Mobile Phone GSM Feature and Smart-Phone Business Line in combination with the accessory, the application services and the eMarketing / eCommerce business. For Nixdorf Compter AG Dr. Hornung was serving as deputy Head of Business Division for Environment Solutions.


Dr. Hornung was and is member of various supervisory boards in the telecommunication vendor and carrier industry across Europe and the US and holds three patents in telecommunication.

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