Born in 1958 in Ascona, Switzerland, he lived and worked in Zurich. His main professional activities were in the fields of product design and interior architecture. 

He designed fashion and furniture showrooms, public spaces, hotels, installations, offices, both in Switzerland and abroad. He designed limited edition collections of furnishings and accessories for several Swiss companies. His projects include furniture, lamps, watches, eyeglasses, rugs, handles, bikes. 

His collaboration with Baleri Italia began in 1985; he designed several many successful products for the company. Hannes Wettstein died in July 2008, only 50 years old.