Sr. Applied Scientist, Ads AI Core Infrastructure

Amazon; San Francisco (CA); On-site; USD 192,200 - 260,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Parental leave

Job summary

A leading technology company is seeking a Sr. Applied Scientist for Ads AI Core Infrastructure in San Francisco. This role focuses on developing cutting-edge solutions utilizing AI to enhance advertising strategies. Ideal candidates will have extensive experience in machine learning and programming. Responsibilities include research and development of algorithms to optimize agent interaction with advertiser data, as well as collaboration with cross-functional teams to implement innovations. Competitive compensation package with comprehensive benefits offered.

Qualifications

• 3+ years of building machine learning models for business applications.
• Experience programming in Java, C++, Python, or related language.
• Experience with neural deep learning methods and machine learning.

Responsibilities

• Research and develop novel algorithms for agent-data interaction patterns.
• Design and execute rigorous experiments comparing traditional API orchestration versus CodeAct patterns.
• Collaborate with engineering teams to productionize research innovations.

Skills

Machine learning models

Programming in Java, C++, Python

Neural deep learning methods

Agentic AI

Education

PhD or Master’s degree in relevant field

Tools

R

Tensorflow

Spark

Job description

Sr. Applied Scientist, Ads AI Core Infrastructure

Job ID: 10380588 | Amazon.com Services LLC

Amazon Advertising is one of Amazon’s fastest growing and most profitable businesses, responsible for defining and delivering AI‑powered solutions that transform how advertisers make strategic decisions. We deliver billions of ad impressions and process massive volumes of advertiser data every day, and you will pioneer breakthrough approaches in how AI agents access and reason over real‑time advertiser data at scale. We are using generative AI and agentic systems to help advertising agents provide instant, strategic advice to millions of advertisers. You will invent new techniques for agent orchestration, context optimization, and code generation to deliver accurate, trustworthy insights with minimal latency and token consumption, and create feedback loops to ensure continuous improvement.

The Ads Real‑Time Data Service team is seeking an exceptional Applied Scientist to research and develop novel approaches for agent‑data interaction. We are building the infrastructure that provides immediate, pre‑computed access to advertiser data via Model Context Protocol (MCP) servers. We summarize data for context using state‑of‑the‑art techniques such as CodeAct and RAG‑based embeddings, transforming how AI agents interact with data.

This role balances applied research (60%) with productionization (40%), giving you the opportunity to advance the state of the art and deploy your innovations at Amazon scale.

Key Job Responsibilities

Agent Orchestration & Optimization Research

• Research and develop novel algorithms for agent‑data interaction patterns that minimize latency, token consumption, and error rates.
• Investigate multi‑agent orchestration strategies for complex advertiser queries requiring data from multiple sources.
• Develop techniques for automatic query optimization and caching strategies based on agent behavior patterns.

Large Language Model Context & Token Optimization

• Invent new methods for compressing advertiser context representations while preserving semantic meaning and analytical utility.
• Research optimal metadata generation techniques that help large language models understand and reason over structured advertiser data.
• Design evaluations to measure the impact of different data representations on agent response quality and token efficiency.
• Develop adaptive context selection algorithms that dynamically choose relevant data based on query intent.

RAG‑Based Embeddings & Semantic Search

• Pioneer new RAG‑based embedding approaches optimized for real‑time advertiser data delivery with sub‑second latency.
• Research and implement semantic search and retrieval techniques for advertiser datasets using vector embeddings.
• Design advertiser context frameworks that enable automatic schema mapping from advertiser concepts to data representations.
• Develop evaluation frameworks to measure performance across dimensions of latency, accuracy, and developer experience.

Experimentation & Productionization

• Design and execute rigorous experiments comparing traditional API orchestration versus CodeAct patterns and RAG‑based approaches across metrics such as success rate, latency, token consumption, and response quality.
• Analyze large‑scale advertiser interaction data to identify patterns, bottlenecks, and optimization opportunities.
• Collaborate with engineering teams to productionize research innovations and deploy them to 30+ advertising agents and skills.
• Establish evaluation metrics and benchmarks for agent‑data interaction performance.

Cross‑Functional Collaboration & Thought Leadership

• Partner with agent builder teams to understand their data requirements and constraints.
• Work with platform engineers to implement and optimize MCP servers, data pipelines, and sandbox execution environments.
• Collaborate with product managers to translate research insights into product features and roadmap priorities.
• Stay current on latest advancements in agentic AI research, specifically in large language models, multi‑agent systems, chain‑of‑thought reasoning, and autonomous agents.

Research Publication & Innovation

• Author technical papers for top‑tier conferences on agent orchestration, context optimization, RAG‑based embeddings, and real‑time data integration.
• File patents for novel techniques in agent‑data interaction, token optimization, and CodeAct patterns.
• Present research findings at internal tech talks and external conferences.
• Mentor engineers and junior scientists on machine learning techniques, experimental design, and research methodologies.

A Day in the Life

You start your morning analyzing experiment results from overnight runs comparing three evaluations for different RAG‑based embedding approaches. The data shows that one of the embedding patterns is returning a significant improvement in accuracy. You create a spec file with the findings and start drafting a technical paper to be shared with the Amazon AI forum.

Mid‑morning, you are in a design session with the engineering team discussing how to optimize RAG‑based embeddings for semantic search over advertiser data. You propose using a hybrid approach combining dense and sparse embeddings to represent campaign metadata, enabling agents to find relevant campaigns through natural language queries while maintaining sub‑second latency. You sketch out the architecture and discuss trade‑offs between embedding model size, search latency, and accuracy.

After lunch, you dive into advertiser interaction logs from advertising agents and skills. You discover that 60% of queries follow a similar structure: filter campaigns by criteria, aggregate metrics, and compare to benchmarks. This insight leads you to design a new pre‑computation strategy using RAG‑based embeddings that could reduce query latency by 40%.

In the afternoon, you collaborate with an Applied Scientist from an advertising agent team. They are seeing inconsistent results when agents calculate complex metrics across multiple campaigns. You investigate and discover the issue is related to how the agent interprets the advertiser context. You propose enriching the RAG‑based embeddings with richer metadata descriptions and run experiments showing this improves calculation accuracy from 85% to 98%.

Late afternoon, you prototype a new approach for adaptive context selection using RAG‑based embeddings with the spec file you generated earlier. Instead of providing agents with all available advertiser data, you dynamically select the most relevant datasets based on query intent using semantic similarity. You build a quick proof‑of‑concept and test it on historical queries. The results are promising: 30% reduction in tokens with no loss in response quality.

About the Team

The Ads Real‑Time Data Service team is a diverse group of passionate engineers and scientists dedicated to advancing agent‑data interaction technology for advertising AI. We value creativity, collaboration, and a commitment to excellence. Our team thrives on tackling complex problems at the intersection of real‑time data engineering, AI agent systems, and large language model optimization.

Basic Qualifications

• 3+ years of building machine learning models for business applications.
• PhD or Master’s degree and 6+ years of applied research experience.
• Experience programming in Java, C++, Python, or related language.
• Experience with neural deep learning methods and machine learning.

Preferred Qualifications

• Experience with modeling tools such as R, scikit‑learn, Spark MLLib, MxNet, Tensorflow, numpy, scipy, etc.
• Experience with large scale distributed systems such as Hadoop, Spark, etc.
• Knowledge of agentic AI, large language models, multi‑agent systems, chain‑of‑thought reasoning, and autonomous agents.

Compensation

The base salary range for this position is listed below. Your Amazon package will include sign‑on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance, 401(k) matching, paid time off, and parental leave. Learn more about our benefits.

USA, CA, Palo Alto: $192,200 – $260,000 USD annually
USA, NY, New York: $183,800 – $248,700 USD annually
USA, WA, Seattle: $167,100 – $226,100 USD annually

Equal Opportunity Employer Statement

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status. Los Angeles County applicants: Criminal history may affect some job duties. We consider qualified applicants with arrest and conviction records per the Los Angeles County Fair Chance Ordinance. Our inclusive culture empowers Amazonians to deliver the best results for our customers.

Accommodation Notice

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