Amazon.com Services LLC in Seattle is seeking a Principal Applied Scientist to lead 50+ builders in agentic AI applications for Amazon advertisers. You will define the science roadmap for recommendations and guidance across Sponsored Products and Brands, spanning Ad Console, Sales-managed, and 3P partners.
You will advance fine-tuning, RL, and preference optimization, build evaluation frameworks for safety and trust at scale, and translate advertiser needs into customer-facing products that help
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