Edel Optics, which claims to be one of the three largest online retailers for eye glasses in Europe and the second-largest in Germany, appointed Marijo Sarac as joint general manager on March 1. He will be supporting Dennis Martens, founder and chief executive officer. Sarac has served on the management and executive boards of various international companies and start-ups and was most recently general manager for Homefully, one of Germany’s leading co-living providers. Edel Optics is based in Hamburg and employs 100 people.