Defne Ertan Tüysüzoğlu had her Associate Degree from Boğaziçi University, Tourism Administration in 1993, and BA from Michigan State University, The School of Hospitality Business in 1996. For her industrial training, she worked at Divan Hotel (Istanbul), Hilton Hotel (Ankara), Morels (Detroit, MI), Bistro 110 (Chiago, IL). Ertan Tüysüzoğlu worked as manager at Scoozi (Chicago, IL), Laledan Restaurant – Çırağan Palace Hotel Kempinski, and Hünal’s Brasserie. She started her own venture in 2001 by opening The North Shield Pub as a franchisee at Darüşşafaka and Parkorman.
In 2004 Defne Ertan Tüysüzoğlu has co-founded a multi-concept restaurant-chain firm; Gruppo Turizm İşl. A.Ş. which developed several concepts for a fish restaurant, a pub, an Italian Café and a Turkish restaurant chain – Kırkpınar Lokantası. In 2012, when the Kırkpınar Lokantaları reached to its 22 branches, she quit her operational duties and took the position of Director of Le Cordon Bleu –Turkey, opened in partnership with Özyeğin University. Since then, along with her administrative position, she has been teaching “Cost Control in Restaurants” at Özyeğin University.
Ertan Tüysüzoğlu is a member of Turkish Friends of Wine Association, Friends of Kitchen Association, Chaîne des Rôtisseurs Association.