Marianna Kolonelos

Marianna Kolonelos is a seasoned professional with extensive experience in sales strategy, business development, and client relationship management. Currently serving as a Business Development Manager at Barnes & Noble, Inc., since 2019, Marianna collaborates with retail locations and internal teams to enhance market services and implement go-to-market strategies based on data analysis. Prior roles include Relationship Manager at EVERYTHING BUT THE HOUSE, where Marianna focused on client sales support, and Account Manager at IN Marketing Services, overseeing national sales revenue initiatives. With a strong background in education and leadership, Marianna has also served as a Regional Coordinator for Gamma Phi Beta International Sorority and as Assistant/Interim Director of Student Support Programs at the University of Southern California. Marianna holds a Bachelor’s degree in Business Administration & Marketing from Cal State Fullerton and a Master’s degree in Postsecondary Administration & Student Affairs from the University of Southern California.