Walter startet is self-employment already after his study of business administration in 1998. Next to his start-up experience he is a specialist when it comes to financing, marketing and management chellenges. Since 2014 he supports young founder teams in the field of investments and company building trainings. With MAD he has co-founded multiple start-ups and with his over 20 years of experience Walter is known as "swiss army knife" who combines perspectives of startups, investors, and corporates.