Applied Scientist II, Stores Foundational AI (SFAI) M5
Confidential
full-time
Mathematical Science Occupations
Location
Seattle, Washington, United States
Posted
April 09, 2026
Job Description
We’re working to improve shopping on Amazon using the conversational capabilities of large language models, and are searching for pioneers who are passionate about technology, innovation, and customer experience, and are ready to make a lasting impact on the industry. You’ll be working with talented scientists, engineers, and technical program managers (TPM) to innovate on behalf of our customers.
We’re looking for scientists with deep LLM expertise to help us build the next generation of large language models. Our team focuses on post-training, including instruction tuning, reward modeling, reinforcement learning, and aligning LLMs with other embedding modalities.
In this role, you will design and run large-scale experiments, analyze model behavior, and develop new training recipes that directly improve core capabilities like reasoning, personalized experiences, and other frontier paradigms that redefine what LLMs can do.
We’re looking for scientists with deep LLM expertise to help us build the next generation of large language models. Our team focuses on post-training, including instruction tuning, reward modeling, reinforcement learning, and aligning LLMs with other embedding modalities.
In this role, you will design and run large-scale experiments, analyze model behavior, and develop new training recipes that directly improve core capabilities like reasoning, personalized experiences, and other frontier paradigms that redefine what LLMs can do.
BASIC QUALIFICATIONS
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