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Quality without compromise.

Satisfaction of the building contractor is one of our most important aims. We reach our goals by giving our all for your wishes. We define processes, regulate clear responsibilities and give control to an experienced project manager. The experience of our employees as well as the permanent assessment and optimisation of all processes guarantee a smooth construction process. In this way, we offer you a full service solution for your project.


Harald Steltner, commercial manager of FRANKI Grundbau GmbH & Co. KG

After his commercial training, Harald Steltner completed a degree in business management at the University of Applied Sciences Kiel in 1984 and now has almost 30 years of experience in the German construction industry. He has worked in the field of special foundation engineering as an authorised officer and managing director since 1994. Harald Steltner has been the authorised officer at FRANKI since 2001 and, since 2002, has been the managing director of several companies in the FRANKI Group.

Karsten Kegelbein, technical manager of FRANKI Grundbau GmbH & Co. KG

Karsten Kegelbein completed his degree at the Bergische Universität Wuppertal with a focus on foundation engineering. He began his professional career at Preussag Spezialtiefbau und Mast Grundbau (special foundation engineering and mast foundation engineering), where he worked in construction and project management in specialist foundation engineering. He initially joined FRANKI Grundbau as a project manager in 2006 and subsequently worked as head of the diaphragm wall technology/excavation pit division. Karsten Kegelbein has been a member of the executive board since the summer of 2015 and has been the managing director since autumn 2017.

Reinhard Bünker, technical manager of FRANKI Grundbau GmbH & Co. KG

Reinhard Bünker started at PORR more than 30 years ago as an accounting and shift engineer after completing his degree with a focus on soil mechanics/foundation engineering. He subsequently worked as a site manager and senior site manager in foundation engineering. Reinhard Bünker has been the department head of foundation engineering at PORR as of 2000. He has been a member of the management board at Stump since 2014 and also a member of the management board of FRANKI Grundbau since 2017.