After completing his studies in electrical engineering and technical computer science as well as business administration in Germany, the USA and Asia, he began his professional career in 1998 as a management trainee at TÜV Rheinland in Taiwan. Over the course of the following 16 years, he held various top management positions for TÜV Rheinland in Japan and India, among other places.
In 2011, he acted as Founder and Director of TÜV Rheinland Bangladesh, parallel to this activity he completed a part-time Master of Business Administration course in General Management, Finance, Technology and Innovation Management.
At the end of 2014, Mr. Rühle returned to Germany as Divisional Board Member for Academy and Life Care, and in May 2016 he finally took over the position of Board Member of Festo Didactic SE in Denkendorf. In addition to his activities, he was a board member of the Indo-German Chamber of Commerce, co-founder of the European Business Group India and a contributor to the Project Management Institute.