Stefan entered the aviation industry in 1994 in the German fly navy and has since held several roles, starting as an unlicensed mechanic, to then become a licenced engineer, station manager and maintenance manager.

Maintenance Manager EASA Form 4 holder, holding EASA Part 66 licence B1/C on several types including Dornier 228, Dornier 328, B747-400, B757, B767 & B777.