Eleni Markou

Eleni Markou is a skilled data science and machine learning professional with extensive experience in developing and optimizing machine learning systems across various industries. Currently serving as a Senior Data Scientist at Kargo since October 2025, Eleni focuses on click-through rate (CTR) prediction models to enhance bidding efficiency and marketplace performance. Previous roles include Senior Machine Learning Engineer at Captify®, where Eleni designed scalable multilingual classification models, and Engineering Manager at Freenow, leading a team in pricing optimization during significant company growth. Additional experience encompasses machine learning engineering roles at Sportradar and RudderStack, and team leadership at GRNET. Eleni holds an Integrated Master of Engineering in Electrical and Computer Engineering from the National Technical University of Athens, and is pursuing advanced degrees in Quantum Computing & Technologies and Business Analytics from Democritus University and Athens University of Economics and Business, respectively.