Search Systems Engineer - AI Trainer

USARemoteFull-time$203k–$243k2026-10-20 → 2026-11-10

Remote

Core

Assess AI-generated content accuracy and build/optimize agentic search systems to improve model reasoning and retrieval performance.

Role type

Senior IC search systems engineer (AI trainer)

Builds

Agentic search systems and data infrastructure for modern search

Domain

AI research and search technology

Deliverable

production ML models

Required skills

Launching production search systems, owning relevance/retrieval, measuring system impact, building agentic search systems, scaling data infrastructure, assessing AI content accuracy, collaborating with AI research teams

Preferred skills

Working independently and asynchronously

Technologies

AI Support

About Mercor

Series C500 Employees

Mercor's mission is to organize human intelligence to power the AI economy. We're a leading AI data company, building the layer between human expertise and frontier models. Millions of domain experts on the platform are paid over $4 million per day to train frontier AI models. Mercor's APEX benchmark family measures AI's real-world impact on professional work. Mercor Enterprise brings this same infrastructure to Fortune 500 companies: helping companies capture how their best people actually work, translating that expertise directly back into agents.