Sitare Sezgin started her career as a Consultant at Bain & Company in 1999 and went on to work as a Senior Consultant at Boston Consulting Group between 2001 and 2004. She joined Sabancı Group in 2004 and served as Strategy and Business Development Manager at Sabancı Holding Retail Group in 2004-2009 and President of New Product and Channel Development at Akbank in 2010-2011. After assuming the duty of Assistant General Manager in Charge of Sales, Marketing and Supplier Relations at Back-Up company affiliated to Boyner Group at the beginning of 2011, she worked as the General Manager of Back-Up and Bofis Turizm companies from August 2011 to 2018. Having served as an Independent Board Member at Carrefoursa and Avivasa from March 2016 to 2018, Sitare Sezgin continued her duty as the General Manager and Board Member of AkÖde, a subsidiary of Akbank, as of February 2018.During this period, She also served as a member of the Independent Board of Directors of Doğtaş Furniture. Sezgin, who is a board member of the Chain Stores Association, is the first and only female member of the board of Euronics, Europe's largest electronics purchasing group. She plays an active role especially in the Women's Association in the Board of Directors and the Women's Association in Technology, which are active in the field of gender equality.

Sitare Sezgin has been working as the General Manager of Teknosa since September 1, 2021.