Sophia Efthimiatou – Biography
Last update: March 4, 2026Executive profile
Sophia Efthimiatou is currently
Head of Writer Relations at Substack - View - Substack org chart
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The colleagues of Sophia Efthimiatou
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- At Substack, Sophia Efthimiatou has 15 colleagues including Christopher Best (CEO), Jairaj Sethi (CTO)…
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- In the Publishing industry, Sophia Efthimiatou has 4,037 colleagues in 302 companies located in 41 countries. 2,329 executive movements have been recorded in the last 12 months. Learn more about Publishing.
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