Jobs For nearly 20 years KOSTER American Corporation has been a well-established supplier of waterproofing systems in constructions. Part of our product range is moisture vapor reduction systems, basement waterproofing, crack injection, concrete repair, façade protection and much more. Research and Development is carried out by KOSTER American Corporation, as well as its parent company KOSTER BAUCHEMIE AG itself, so that our product range can be considered fresh and innovative. Within the branch our market segment is the high-technology and high quality sector. The reason for our success are the people that work for KOSTER American Corporation. To enlarge our team we currently have the following vacancies: