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Software Engineer, Agent Evaluation and Quality

Evals & Benchmarks6mo ago

Source verified: this exact posting was present on Cursor’s careers feed on 2026-10-09. View employer source →

The role

Our mission is to automate coding. The first step in our journey is to build the best tool for professional programmers, using a combination of inventive research, design, and engineering. Our organization is very flat, and our team is small and talent dense. We particularly like people who are truth-seeking, passionate, and creative. We enjoy spirited debate, crazy ideas, and shipping code.

About the Role

As a Software Engineer on the Agent Quality team at SpaceXAI, you’ll build the measurement, evaluation, and feedback-loop infrastructure that makes the Cursor core agent reliably better over time.

This role sits at the intersection of product, data, and engineering: you’ll instrument what matters, help define how we judge quality, build pipelines and tooling to analyze agent behavior at scale, and partner closely with research, product, and infrastructure teams to turn insights into improvements.

Your impact will compound across every Cursor product built on the shared harness—and across high-stakes decisions around model choice, quality, and cost.

What you’ll work on

Designing and building best-in-class AI evaluation system: curated datasets, offline replay, scorers / judges, regression alerts, and 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, and surfacing actionable insights.
Improving reliability and guardrails by making quality measurable and operational: defining “good/bad/degraded” sessions, alerting, and triage primitives.

You may be a fit if

You’ve built and operated evaluation or measurement systems, such as AI evals, experimentation, ranking/relevance, or search quality. You can turn ambiguous “quality” questions into concrete metrics, pipelines, and decisions.
You have strong data acumen, and can collaborate effectively with data scientists and researchers.
You have taste and strong opinions on model and agent behaviors. You stay up-to-date and informed on emerging research and industry trends.
You have strong software engineering fundamentals and enjoy shipping production systems.

Applying

If there appears to be a fit, we'll reach to schedule 2-3 short technicals. After, we'll schedule an onsite in our office, where you'll work on a small project, discuss ideas, and meet the team.

#LI-DNI

Published by Cursor on their own careers page and reproduced here unedited. Read it at Cursor.

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What this listing does not tell you

Listed 179 days, which is longer than most. Of the 114 evals and benchmarks roles this board has watched from listing to removal, 85% were gone from their employer's careers page by day 179, and the median came down after 56 days. That is a description of other listings that have already ended, not a prediction about this one: this board records when a listing disappears, never why, and a posting still up is not on a clock it can see.

Pay is not confirmed for this role. Check the employer’s posting for current compensation. Explore published bands from other roles →

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