Principal Applied Scientist (AI)

TL;DR

Principal Applied Scientist (AI): Leading the development of Copilot Chat Assistant, revolutionizing how advertisers create and optimize campaigns with AI. Focus on designing multi-agent reasoning systems, building robust retrieval pipelines, and advancing prompt/program design for accuracy, latency, and cost efficiency.

Location: Expected to work from the office at least four days per week if living within a 50-mile commute of a designated Microsoft office in the U.S.

Salary: USD $139,900 – $304,200 per year depending on location

Company

Microsoft’s mission is to empower every person and every organization on the planet to achieve more.

What you will do

• Own the science roadmap for Copilot Chat Assistant, driving it from ideation to reliable, safe production launches.
• Design multi-agent reasoning systems that blend LLM orchestration, tool use, and state management for long-running tasks.
• Build robust retrieval pipelines (RAG + vector stores) for precise, grounded answers across advertiser and campaign domains.
• Advance prompt/program design to boost accuracy, latency, and cost efficiency.
• Ship real features with engineering partners, including telemetry, online evaluations/A-B tests, guardrails, red-teaming, and quality bars.

Requirements

• Bachelor’s Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 6+ years related experience.
• Experience using LLMs, agentic frameworks, RAG, vector databases to build complex production systems.
• Experience developing and deploying live production systems, as part of a product team.
• Experience developing and deploying products or systems at multiple points in the product cycle from ideation to shipping.

Culture & Benefits

• Be part of a dynamic team pushing the boundaries of Generative AI.
• Contribute to cutting-edge tools that drive impact at scale.
• Work in a culture of inclusion where everyone can thrive at work and beyond.