Competence, responsibility, and an eye on the future.
Leadership with experience and vision
The NTA Group's management combines extensive industry experience with strategic vision. Our leaders bring expertise in the areas of security, communications, and IT and represent a clear growth strategy that combines reliability with innovation. Together, they lead the group in a dynamic market environment – with a focus on sustainable success, stable partnerships, and the continuous development of the group.
Dr. Marc Achhammer – Group CEO
As Managing Director of the NTA Group, Dr. Marc Achhammer is responsible for the strategic direction and operational business. Having served as Senior Vice President of Sales Key Accounts at Unify, COO and Managing Director at B2X Care Solutions, and CHRO and COO of the KATEK GROUP, he brings extensive management experience in international technology companies.
He received his doctorate in physics from the University of Regensburg and also studied philosophy.
Kai Meissner – Managing Director, MTG Kommunikations-Technik GmbH
He has been a Managing Director at MTG for many years, with proven expertise in communications and network technology. Previously, he held management positions at Siemens (including Head of Service and Head of Implementation Management) and at BVG (German Public Transport Authority). His focus was on implementing complex communications projects.
Torsten Marx – Managing Director, NTA Systemhaus GmbH & Co. KG
Co-founder of the NTA Group and managing director of NTA Systemhaus for many years. He is also a board member of the German Telecommunications Association. Previously, he held positions as a product manager at R&M and as a branch manager at Euromicron AG. His focus is on corporate development and sales.
Maximilian Grossmann – Corporate Finance / Managing Director, Hieronymus Sicherheits- Systemhaus GmbH & Co. KG
Maximilian Grossmann is responsible for the group's corporate finance and has been Managing Director of HSS for over ten years. Previously, he held various positions in the German energy sector, including corporate controlling and as a marketing program manager at General Electric, where he was responsible for the strategic direction in the energy sector. He holds a Master's degree in International Business with a focus on marketing and finance from Maastricht University.
Benjamin Lieber - Strategic Business Development and M&A
Benjamin Lieber is responsible for strategic business development and M&A. He has extensive management experience in the telecommunications and security industries and, as co-founder, successfully led and sold a SaaS company. He is particularly passionate about developing innovations close to the market and driving sustainable company growth. He studied business administration and digital management in Mainz, Lisbon, and Göttingen.
Elena Ruh – HR Partner
As HR Partner, Elena Ruh shapes the HR issues of the NTA Group, always keeping an eye on the future and development of our employees. She brings extensive experience from management consulting and her role as an HR Partner. Her diverse personal backgrounds also shape her career – from growing up on a farm to holding a Master's in Organizational Studies and a Bachelor's in Political Science and Public Administration.
Jens Vestewig – Corporate Sales Strategy
Jens Vestewig is responsible for the strategic sales and marketing direction of the group and actively shapes tomorrow's market success. With more than 20 years of experience in sales and marketing in the ICT and security industries, he has demonstrated in management positions at market-leading companies how to develop markets, build strong customer relationships, and lead teams to peak performance.