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.