Bruno P.
Spécialiste technique à l’Office fédéral de la douane et de la sécurité des frontières
Silvia G.
– Senior Legal Advisor
« Ms. Zoller is a well-organized, motivated, and patient professional, keen on explaining even very difficult details of the language with good examples. As my mother tongue is Greek, and at that time my German was not at a high level, we communicated in German, English, and French without problem.
Yann D.
– Ingénieur
Reynold L.
– Géobiologue





