Applied Scientist II, Global AI Agents

Amazon; New York (NY); On-site; USD 172,000 - 222,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Parental leave

Job summary

Amazon is seeking an Applied Scientist II for Sponsored Products Global Optimization to design agentic AI systems, develop datasets and tools, and push the state of the art in autonomous advertising workflows at global scale. You will collaborate with scientists, engineers, and product managers to bring innovations into production and help advertisers create, optimize, and grow campaigns.

You will work on techniques like fine-tuning, reinforcement learning, and preference optimization, building

Qualifications

• PhD, or Master's degree and 4+ years of CS, CE, ML or related field experience.
• 3+ years of building models for business application experience.
• Experience programming in Java, C++, Python or related language.
• Experience in designing experiments and statistical analysis of results.

Responsibilities

• Design and build agents that improve advertisers experiences globally.
• Design and implement advanced model and agent optimization techniques, including supervised fine-tuning, instruction tuning and preference optimization (e.g., DPO/IPO).
• Design and implement optimization models that work at global scale taking into account nuances of multiple countries.
• Innovate new science models to help advertisers scale their campaigns globally.
• Curate datasets and tools for MCP.
• Build evaluation pipelines for agent workflows, including automated benchmarks, multi-step reasoning tests, and safety guardrails.
• Develop agentic architectures (e.g., CoT, ToT, ReAct) that integrate planning, tool use, and long-horizon reasoning.
• Prototype and iterate on multi-agent orchestration frameworks and workflows.
• Collaborate with peers across engineering and product to bring scientific innovations into production.
• Stay current with the latest research in LLMs, RL, and agent-based AI, optimization and translate findings into practical applications.

Skills

Java

C++

Python

Experiment design

Statistics

Education

PhD or Master's degree in CS/CE/ML or related field

Job description

Amazon is seeking an Applied Scientist II for Sponsored Products Global Optimization to design agentic AI systems, develop datasets and tools, and push the state of the art in autonomous advertising workflows at global scale. You will collaborate with scientists, engineers, and product managers to bring innovations into production and help advertisers create, optimize, and grow campaigns.

You will work on techniques like fine-tuning, reinforcement learning, and preference optimization, building