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Zappos

Machine Learning Engineer, Foundational AI (FAI)

OnsiteEngineering & technologyNot yet verified

United States, CA, Sunnyvale

Original posting date
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Nov 2, 2026

Saved job description

The Foundational AI (FAI) team is looking for a passionate, talented, and inventive Machine Learning Engineer with a strong deep learning background, to build industry-leading Generative Artificial Intelligence (GenAI) technology with Large Language Models (LLMs).

Key job responsibilities

As a Machine Learning Engineer with the FAI team, you will support the development of RL Gyms, assess their usefulness for the frontier model advancement and build techniques to advance the state of the art with LLMs. You will support the foundational model development in an applied research role. Your work will directly impact our customers in the form of products and services that make use of GenAI technology. You will leverage Amazon’s heterogeneous data sources and large-scale computing resources to accelerate advances in LLMs.

About the team

The FAI team supports the growth and progress of RL Gyms and assess the value of RL gyms for the frontier model advancement. The team has a mission to push boundaries in GenAI with LLMs, in order to provide the best-possible experience for our customers.

Requirements: - 3+ years of non-internship professional software development experience

- 3+ years of computer science fundamentals (object-oriented design, data structures, algorithm design, problem solving and complexity analysis) experience

- Experience in machine learning, data mining, information retrieval, statistics or natural language processing

Location & listing notes

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Source-listed locations: US, Sunnyvale, California.

Listed states: CA.

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