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Panpan Xu

Principal Applied Scientist, AWS

Panpan Xu is a Principal Applied Scientist at AWS Agentic AI working on agent optimization.

1 post

July 10, 2026

Introducing Harness Optimizer: Automatically optimize your agent harness

Harness Optimizer is an open-source library that optimizes the context around your LLM agent (system prompt, tool docs, skills) the way you'd train a model: rollouts in, rewards out, parameters updated.

Guande WuHan DingLinbo LiuYawei WangJoy ChakrabortyPanpan Xu