[4] Fielmann was born on 24 July 1989, the eldest child of Günther and Heike (née Eggert; b.

[5][6] Fielmann attended Schule Schloss Salem and London School of Economics and Political Science.

[7][8] Before entering the family business in 2012, Fielmann worked in the eyewear industry for Luxottica and Safilo Group.

[9] Since April 2018, he is CEO of Fielmann AG with responsibility for marketing, communications and executive leadership.

[14][15] Under his leadership, Fielmann AG has announced plans to dedicate more than €200 million to the international expansion and digitization of the group,[16][17] investing in regional market leaders such as Optika Clarus,[18] Óptica Universitaria,[19][20][21] Medical Óptica[22] and SVS Vision[23][24] as well as technology companies such as the augmented reality application provider FittingBox,[25][26] the smart glasses developers Ubimax[27] and Deep Optics[28] and e-commerce platform Befitting.