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Product Manager, Agent Harness

San Francisco💼 Full-time🗓 2026-04-30 → 2026-07-31

Core

Designing the framework that enables AI agents to decompose tasks, interact with systems, handle failures, and be steered by developers.

Role type

Product Manager, Agent Harness

Builds

The core execution and observation framework for Cursor's AI coding agents

Domain

AI Agents / LLM-powered Developer Tools

Deliverable

product features

Required skills

AI agent architecture, LLM application development, system behavior analysis, evaluation framework design, empirical result interpretation, multi-agent coordination, tool extensibility (MCPs/plugins), reinforcement learning concepts

Preferred skills

Experience with Cursor's Composer or similar frontier coding models, real-time RL training, building evaluation benchmarks for hallucination and error recovery

Technologies

Cursor, MCPs, plugins, RL frameworks

Responsibilities

Own the agent planning and execution framework, design developer observation and steering interfaces, build evaluation and benchmarking systems, analyze agent traces at scale, define primitives for agent extensibility, improve default agent model settings, shape multi-agent coordination

Seniority

Senior, hands-on IC

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