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Principal Applied Scientist - CoreAI

United States, Washington, Redmond💼 Full-time🗓 2026-07-01 → 2026-10-02

Core

Developing LLM prompts, agents, and query execution workflows with tight latency constraints; incorporating state-of-the-art research into production techniques.

Role type

Principal Applied Scientist (LLM & Search)

Builds

LLM agents, query execution workflows, and experimentation infrastructure for search engine components.

Domain

Search engines, Large Language Models (LLM), Agentic AI

Deliverable

production ML models | product features

Required skills

LLM prompt engineering, agentic coding systems, long-running agent scaffolding, hybrid collaboration, task-specific metric definition, evaluation dataset construction, experimentation infrastructure development, product lifecycle management (ideation to shipping), technical excellence leadership, cross-functional collaboration.

Preferred skills

None explicitly stated.

Technologies

None explicitly stated.

Responsibilities

Develop LLM prompts and agents; build metrics for search engine components; incorporate customer feedback into dataset construction and technique development; lead technical excellence and contribute to experimentation infrastructure; nurture collaborative relationships with product management and engineers.

Seniority

Principal, hands-on IC with strategy & mentorship (via careerplan.io/jobs/1970393556918465-principal-applied-scientist-coreai-at-microsoft)