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Software Engineer, Agent Evaluation and Quality

Backend Developer • On-site • Full-time • 📍 San Francisco

On Cursor's Agent Quality team you'll build the measurement, evaluation and feedback-loop infrastructure that makes the core agent reliably better over time.

Responsibilities

  • Designing and building a best-in-class AI evaluation system: curated datasets, offline replay, scorers/judges, regression alerts, dashboards
  • Designing feedback loops from real usage: collecting, cleaning and interpreting user signals to inform model and harness changes
  • Developing analysis tooling and workflows for debugging agent behavior: deep dives on failure modes, clustering themes, surfacing actionable insights
  • Improving reliability and guardrails by making quality measurable and operational: defining "good/bad/degraded" sessions, alerting, triage primitives

Requirements

  • Experience building and operating evaluation or measurement systems (e.g. AI evals, experimentation, ranking/relevance, search quality)
  • Ability to turn ambiguous "quality" questions into concrete metrics, pipelines and decisions
  • Strong data acumen and effective collaboration with data scientists and researchers
  • Strong software engineering fundamentals, enjoy shipping production systems

Nice to have

  • Taste and strong opinions on model and agent behaviors
  • Staying up to date with emerging research and industry trends

Soft skills

Truth-seeking, passionate and creative mindsetEnjoys spirited debate and bold ideas

About the company

Cursor's mission is to automate coding. The organization is very flat, with a small, talent-dense team building the best tool for professional programmers by combining inventive research, design and engineering.

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