Stefan Schnell has extensive experience in welding technology and engineering, currently serving as Gruppenleiter Schweißqualifikation at Witzenmann Group since April 2009, where responsibilities include the qualification of welding procedures, training, and oversight of personnel in the aerospace sector. Previous roles encompass developmental engineering in welding technology and internships focused on mechanical connection techniques and the construction of mechanical seals. Stefan Schnell holds a Diplom-Ingenieur degree in Mechanical Engineering from the University of Stuttgart, obtained in 2008.