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Applied Scientist II, Search Query Understanding

Irvine, California, United States💼 Full-time💰 $142,800–$193,200🗓 2026-06-01 → 2026-07-23

Core

Develop and optimize Large Language Models (LLMs) and Retrieval Augmented Generation (RAG) to understand user shopping missions and enhance the Amazon search engine into a shopping engine.

Role type

Senior Applied Scientist (Search Query Understanding)

Builds

Scalable ML models for search query understanding and shopping mission analysis

Domain

E-commerce, Search, Large Language Models (LLMs), Retrieval Augmented Generation (RAG)

Deliverable

production ML models

Required skills

Machine Learning, Artificial Intelligence, Large Language Models (LLMs), Retrieval Augmented Generation (RAG), post-training of foundation models, LLM inference optimization, algorithms and data structures, numerical optimization, data mining, parallel and distributed computing, high-performance computing, data management, software engineering best practices

Preferred skills

Unix/Linux, professional software development

Technologies

Java, C++, Python

Responsibilities

Collaborate with cross-functional teams to identify requirements for ML model development; Design and implement scalable ML models to process large datasets; Lead management and experiments of ML models at scale; Serve as a technical lead and liaison for ML projects

Seniority

Senior, hands-on IC

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