Sophia Efthimiatou is an experienced professional in the field of publishing and writer relations, currently serving as the Writer Partnerships / Head of Publisher (Writer) Relations at Substack. Previously, Sophia held positions such as Associate Director at the Onassis Foundation and Senior Editor at McGraw Hill. Additional editorial experience includes roles as Editor at Bloomberg News and Assistant Editor at Princeton University Press. Sophia's academic credentials include a Master's degree in Nonfiction Writing from Columbia University and a Bachelor's degree in Economics from UCL.
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