The investor experience connected to Chapter One.
Jamesin Seidel is a General Partner at Chapter One. She initially built its data and sourcing infrastructure after working on Twitter’s anti-spam systems.
The linked profile explains the work behind this connection and provides public sources.
Jamesin Seidel built Twitter systems to detect fake accounts and platform manipulation, then developed Chapter One’s data and sourcing infrastructure. She became General Partner in 2025 and helped launch The Engine Room in London.
Explore Jamesin Seidel’s experience ↗This is an independent guide to the people in our directory, not an official Chapter One page or a complete list of its team.