Sophia Beiter is an German Research Associate at the Institute for the Danube Region and Central Europe (IDM) in Vienna, Austria. She coordinates Citizens for EU Enlargement (CitizEn), which advances informed public debate and societal readiness for future accessions. Her work spans European integration, EU enlargement, democratic participation and EU reform, with regional expertise in Bulgaria, the Black Sea region and Russia. As a Charlemagne Prize Academy Fellow in 2024 and 2025, she developed research on citizen-driven enlargement. She earned her Master of Arts degree at the University of Vienna.