Sophia Efthimiatou
About Sophia Efthimiatou
Sophia Efthimiatou serves as the Writer Partnerships and Head of Publisher Relations at Substack, a position she has held since 2020. With a background in editing and publishing, she has previously worked at notable organizations including the Onassis Foundation and Bloomberg News.
Work at Substack
Sophia Efthimiatou has been serving as the Writer Partnerships / Head of Publisher (Writer) Relations at Substack since 2020. In this role, she focuses on building and maintaining relationships with writers and publishers, facilitating collaboration and engagement within the platform. Her position is based in New York, United States, where she has contributed to the growth and development of Substack's community of writers over the past four years.
Previous Experience
Before joining Substack, Sophia Efthimiatou worked at the ONASSIS FOUNDATION as Associate Director from 2014 to 2020. In this capacity, she managed various initiatives and programs, contributing to the foundation's mission. Prior to that, she held editorial roles at Bloomberg News as an Editor from 2006 to 2008, and at McGraw Hill as a Senior Editor from 2008 to 2009. Her career began at Princeton University Press, where she worked as an Assistant Editor from 2003 to 2006.
Education and Expertise
Sophia Efthimiatou earned her Master's degree in Nonfiction Writing from Columbia University, where she studied from 2010 to 2012. She also holds a Bachelor of Science in Economics from University College London (UCL), which she completed between 1999 and 2002. Her educational background provides her with a strong foundation in both writing and analytical skills, enhancing her expertise in the publishing industry.