// PERSON
Mason Pierce
ROLE PISCATORE FOUNDERMENTIONS 0LAST SEEN AUGUST 21, 2026
// BIO
Mason Pierce is the co-founder and CTO of TrainLoop, a Y Combinator Winter 2025 startup building infrastructure for fine-tuning and training reasoning models using reinforcement learning techniques. He previously worked as a software engineer at Camio and as a founding engineer at Second. Pierce holds a degree in Technology Information Management and Computer Science from UC Santa Cruz.
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// SIGNALS
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