Founder · Executive · Engineer

Jason Warner

poolsideCo-founder and Co-CEO

Warner has shaped both the infrastructure of modern software teams and the push toward AI that writes code. After scaling GitHub as CTO, he co-founded poolside to train foundation models on software development, using code execution as feedback for improving reasoning and reliability.

Career & education

Current role

poolside2023-present

Co-founder and Co-CEO

Previously

GitHub2017-2021

Chief Technology Officer

Work and education history is primarily focused on AI-relevant roles and may not be comprehensive.

About this profile

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Reviewed August 10, 2026 · Checked for accuracy and new information.

Jason Warner

Career & education

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