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Cursor

Posted via Ashby

Software Engineer, ML Research

Posted Aug 5, 2026

Role at a glance

Salary
Not Disclosed
Location
San Francisco, United States New York, United States
Work arrangement
On-site
Employment
Full-time

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Role Summary

AI-generated

Cursor is building frontier coding agents and scaling reinforcement learning on real user data. The Research Engineer will build the training, inference, and data systems behind Cursor's frontier coding models while working directly with researchers to make progress repeatable and iteration fast.

What You'll Do

  • Build distributed training, inference, and reinforcement learning infrastructure
  • Write libraries to simplify large-scale data jobs for researchers
  • Architect systems that turn Cursor user data into effective training data

Generated from the employer's posting. Verify important details before applying.

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Qualifications

You may be a fit if you have a strong infrastructure/distributed systems background, are able to architect and ship end-to-end with high ownership, have strong intuitions about how language models work, and are excited to learn more about ML.

Required

  • Strong infrastructure/distributed systems background
  • Ability to architect and ship end-to-end with high ownership
  • Strong intuitions about how language models work

Preferred

  • Excited to learn more about ML

Original job description

Content provided by the employer

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.

Research Engineer

Cursor is building the future of coding. We train frontier coding agents and scale RL on real user data to make them increasingly effective.

About the role

We’re looking for Research Engineers to build the training, inference, and data systems behind our frontier coding models. You’ll work directly with researchers to make progress repeatable and iteration fast.

What you’ll do

  • Build our distributed training, inference, and RL infrastructure

  • Write libraries to simplify how researchers do large-scale data jobs

  • Architect the systems that turn Cursor user data into effective training data

You may be a fit if

  • You have a strong infrastructure/distributed systems background

  • You are able to architect and ship end-to-end with high ownership

  • You have strong intuitions about how language models work

  • You’re excited to learn more about ML

#LI-DNI

Cursor

About the company

Cursor

Startup

Cursor is an innovative technology company specializing in software development and digital solutions tailored for businesses of all sizes. With a focus on enhancing user experience and operational efficiency, Cursor offers a range of products, including custom applications, cloud services, and data analytics tools. The company prides itself on its collaborative approach, working closely with clients to understand their unique needs and deliver effective solutions. Committed to driving digital transformation, Cursor strives to empower organizations through cutting-edge technology and exceptional service.