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Software Engineer, Agent Harness

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10 months ago
San Francisco, CA, USA or New York, NY, USASenior

Responsibilities

  • Advance the agent harness, including agent loops, tools, prompts, execution environments, and capabilities.
  • Improve the default Cursor “Auto” experience through model selection based on user needs, model capabilities, and cost.
  • Shape the default agent’s personality and behavior.
  • Launch new models end-to-end by partnering with foundational model providers and the research team on integration, evaluation, and rollout.
  • Ship production systems and help define agent behavior using data, user experience, and product judgment.

Requirements

  • Experience building complex agentic products or infrastructure.
  • Strong software engineering fundamentals and a track record of shipping production systems.
  • Strong judgment and opinions about model and agent behavior, with awareness of emerging research and industry trends.
  • Ability to make decisions in ambiguous situations by balancing data, user experience, and product taste.

Benefits

  • The interview process includes 2–3 short technical interviews followed by an onsite in the company office with a small project, idea discussion, and team meetings.

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About Cursor

1,001-5,000 employees
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