Executive Management


Wilhelm Linnewedel

Managing Director
Koller Maschinen- und Anlagenbau GmbH

Wilhelm Linnewedel is company’s managing director, a position he assumed in May 2020. 

He is also managing director at the associated company MB Well Services since 2015. Prior to this position he served as the company‘s general manager from 2005 to 2015. 

Wilhelm Linnewedel holds a master‘s degree in mechanical engineering.


Kai Drögemüller

Head of Design and Construction
Koller Maschinen- und Anlagenbau GmbH

Kai Drögemüller is head of design and construction, a position he assumed in January 2018. Prior to his current position, he held various management and technical roles within the company, including head of steelwork division, special machines construction lead, road construction and cutting solutions engineer.

Kai Drögemüller holds a master‘s degree in mechanical engineering from FH Cologne, Germany.


Fabian Sander

Head of Production
Koller Maschinen- und Anlagenbau GmbH

Fabian Sander is the company’s head of production, a position he assumed in May 2020. He is responsible for the production planning, manufacturing and quality assurance and quality control in the integrated manufacturing process. 

Prior to this role he held various positions in manufacturing, including steel and metal work, milling and drilling and quality process control.

Fabian Sander holds a master‘s degree in mechanical engineering from HS Hannover, Germany.


Omar Moustafa

Head of Sales
Koller Maschinen- und Anlagenbau GmbH

Omar Moustafa is head of sales at Koller Solutions, a position he assumed in October 2020. 

Omar Moustafa is responsible for customer service, leading the sales team, sales of Koller products and services, develop sales strategies, mentoring and training of the sales team, managing the company objectives with the managing director and the leadership peers. Moustafa’s career began in 2001 with an oil and gas giant service company and spanned a variety of operations and sales positions in Europe and the Middle East.

Omar Moustafa holds a master’s degree in Petroleum Engineering from the University Clausthal-Zellerfeld, Germany.