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Ekaterina Deyneka

Profile

Founder & CEO at Reelful.

Biography

Kate Deyneka is the founder and CEO of Reelful, an agentic video editor for social media. She founded Reelful in October 2025 and built the product end to end, including multimodal pipelines for media understanding, automated editing, and mobile deployment. Reelful launched in April 2026 and is available on the App Store. Reelful is part of the a16z speedrun SR007 cohort. Previously, Kate was a senior machine learning engineer at Snap, where she led video generation from research to production and shipped AI features used by more than 100 million daily users.

Conference Sessions

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