Software Engineer Agent Harness

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Anysphere, Inc. (doing business as Cursor)Visit Anysphere, Inc. (doing business as Cursor) website

Cursor is an AI coding-agent product operated by Anysphere, Inc.; it was acquired by SpaceX in August 2026 and continues to operate.

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About Anysphere, Inc. (doing business as Cursor)

Cursor provides AI-assisted software-development tools, including desktop and CLI coding agents, autonomous cloud agents, code review, and enterprise offerings.

View jobs by Anysphere, Inc. (doing business as Cursor)

Skills

About the Role

You will build core AI agent behavior and capabilities, including orchestration, tools, guardrails, prompts, execution environments, and model tuning. You will improve the default agent experience and launch new models through integration, evaluation, and rollout.

Requirements

  • Experience building complex agentic products or infrastructure
  • Strong software engineering fundamentals
  • Knowledge of model and agent behavior
  • Ability to make product decisions using data and user experience
  • Experience with AI evaluation datasets or frameworks is a plus
  • Experience building developer tools is a plus

Responsibilities

  • Advance the agent harness across agent loops, tools, prompts, execution environments, and capabilities
  • Improve default agent model selection
  • Shape the default agent personality
  • Launch new models through integration, evaluation, and rollout

Hiring Process

2–3 short technical interviews, followed by an onsite office visit involving a small project, idea discussions, and team meetings.

Software Engineer Agent Harness at Anysphere, Inc. (doing business as Cursor) | JobStash