Team has extensive startup, AI, and math backgrounds: - founding engineer at a unicorn - ML infrastructure @ Scale AI (inference), AWS Bedrock (fine-tuning) - ads engineering @ Meta & Twitch - IMO & IOI medalists
Polymorph is a Y Combinator company in the Winter 2026 batch. Its directory entry describes it as: Building secure polymorphic apps. The founder listed is Andrew Sy (Founder/CEO) (Y Combinator directory entry, February 17, 2026).
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New accelerator entry · 2026-02-17 · the record
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Team has extensive startup, AI, and math backgrounds: - founding engineer at a unicorn - ML infrastructure @ Scale AI (inference), AWS Bedrock (fine-tuning) - ads engineering @ Meta & Twitch - IMO & IOI medalists
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Understand every user individually. Act on it automatically. Polymorph mixes qualitative and quantitative signals to give every user their own growth team.
The title and description the site itself served, answering 200. Not a cached copy and not the company's directory entry — what was live when we asked.
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