Angelidaki cofounded the online marketplace InstaShop alongside CEO John Tsioris in 2015. It was acquired by Germany-based Delivery Hero in 2020 for $360 million. InstaShop has over a million downloads on Google Play. It delivers from local supermarkets, pharmacies, restaurants, bakeries, butcheries, pet shops, and others in the U.A.E., Oman, Qatar, Bahrain, Egypt, Lebanon, and Greece. Angelidaki oversees the companies’ online marketing. She was previously the cofounder and CMO of Vound app.