← All roles

Research Scientist

Cursor· SpaceXAI / SpaceXSI
Apply on company site
Hybrid (Not specified)Full-timePosted 7mo ago

About the role

Research Scientists who can drive effective reinforcement learning (RL) or mid-training research in a small-team setting, owning ambiguous, hard research problems end-to-end from hypothesis to model deployment, with significant autonomy.

Responsibilities

  • Improve our understanding of RL, what it takes to handle longer horizon tasks, and train with less compute
  • Train graders to improve performance on coding tasks with non-verifiable reward
  • Improve the quality and difficulty of datapoints we use for training our models
  • Realtime RL for coding agents

Qualifications

  • You have a deep background in RL and strong machine learning fundamentals
  • You’re an excellent programmer and software engineer
  • You can handle ambiguous research tasks with little guidance
  • You care a lot about data quality, and can dive into the data when appropriate
  • You are truth seeking, aiming to learn more about the science than proving your ideas are correct

Skills

Required:Reinforcement Learning (RL)Programming / Software Engineering
Nice to have:Data quality and data analysis
Last updated Oct 15, 2026. Interested? Apply on the company site.
Cursor logo

About Cursor

The best way to code with AI

Built to make you extraordinarily productive, Cursor is the best way to build software with AI.

AIai-infrastructure-and-developmentai-plg-top-20brex-fastest-growing-2025code completionliquid-ai-recruiting-targetmultimodal agentsproductivity
Company profileWebsite

More open roles at Cursor