Amazon.com Services LLC

Applied Science, Retail

AppliedScientistII,CoreSearch

$143–193k Seattle, Washington, United States FULL TIME
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Mid candidates.

The Brief

“Applied Scientist II, Core Search at Amazon.com Services LLC. Skills: Machine Learning, Large Language Models, Search systems, Data analysis. Analyze data and metrics. Design ML and LLM solutions”

What You'll Achieve.

Improve search experiences

Industry & Context.

Applied Science, Retail
Problems you'll solve

Improve suggestion generation; Improve recommendations; Improve ranking; Find products faster; Express shopping intent; Refine search results

What They're Looking For.

Must Have

Master's degree and 4+ years experience, Experience programming in Java, C++, Python, Experience in algorithms and data structures, Experience in parsing, Experience in numerical optimization, Experience in data mining, Experience in parallel and distributed computing, Experience in high-performance computing

Nice to Have

PhD preferred, Experience using Unix/Linux, Experience in professional software development, Experience in state-of-the-art deep learning models architecture design, Experience in deep learning training and optimization, Experience in model pruning

What You'll Do.

Analyze data and metrics

Design ML and LLM solutions

Build ML and LLM solutions

Deploy ML and LLM solutions

Evaluate solutions via offline tests

Evaluate solutions via online A/B tests

How You'll Work.

Communication Scope

Scientific venues

Full Job Description

The Amazon Search team creates customer-focused search solutions and technologies. Whenever a customer visits an Amazon site worldwide and types in a query or browses through product categories, Amazon Product Search services go to work. We design, develop, and deploy high performance, fault-tolerant distributed search systems used by millions of Amazon customers every day. Search Autocomplete and Navigation focuses on helping customers express their shopping intent and navigate search results more effectively. In this role, you will invent universally applicable signals and algorithms to improve suggestion generation, recommendations, and ranking, using LLMs and ML techniques. The improvements you make will help hundreds of millions of customers find the right products faster, from the first keystroke through search result refinement. You will work on problems such as fine-tuning large language models for real-time suggestion generation under strict latency constraints, personalizing recommended content to individual customers, building evaluation frameworks for model selection, and designing data-driven guardrails for LLM-generated content. The work will span the whole development pipeline, including data analysis, evaluation system design, prototyping, A/B testing, and creating production-level systems. Key job responsibilities Your responsibilities include but not limited to: * Analyze the data and metrics resulting from traffic into Amazon's product search service. * Design, build, and deploy effective and innovative ML and LLM solutions to improve search experiences. * Evaluate the proposed solutions via offline benchmark tests as well as online A/B tests in production. * Publish and present your work at internal and external scientific venues in the fields of ML/NLP/IR. Basic Qualifications: - PhD, or Master's degree and 4+ years of CS, CE, ML or related field experience - Experience programming in Java, C++, Python or related language - Experience in any of

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