Johannes Bösze started his professional career in newspaper sales. As an area manager, he was responsible for the delivery of Krone and Kurier, demonstrating his ability and organizational skill for several years.

In 1999, he transitioned to temporary staffing, acting as account manager and personnel consultant. From 2000, he continued his career with the global market leader for HR services. He successfully completed the qualifying examination for trades in temporary employment; his diverse professional training includes a diploma for personal accounting.