Thiemo started his career in business services in 1999. After studying International Management , he started in a commercial role at Deutsche Post. From 2002 to 2014, Thiemo held various commercial positions within Sandd, where he was CCO for sales, marketing , customer service and communication over his final years with Sandd.
In 2013, Thiemo was named Commercial Director of the Year by the Sales Management Association (SMA). Since 2015, he has been CCO at Webhelp and is responsible for commercial activities of Webhelp Netherlands and its subsidiaries.