Mr. Retzmann started his career in medical technology in 2003 with RADOSCAN GmbH as a service technician for magnetic resonance imaging (MRI) from SIEMENS. In 2004 he took over the service line of RADOSCAN and accompanied the ISO-certification. 2005 Mr. Retzmann joined inmed medizintechnik GmbH where he initially worked as a service technician and initiated the ISO-certification process of inmed in the same year. In 2006, his activities were extended to project management and business management assistant. In 2010 Mr. Retzmann was promoted to attorney and since then has been responsible for human resources, quality management, financial control, and business management. He is also a member of the executive board.