Hiring: Software Engineer, RL Data Company: Cursor Location: San Francisco, CA Job Posted Time: 2026-09-03 08:36:29 Target Skills & Keywords : Reinforcement Learning About the job Required Skills: •As a Software Engineer on the RL Data team at SpaceXAI, you'll create the tasks, rewards, and environments that train our coding agents. The team owns the data that goes into training: what the model is asked to do, how we score it, and the setups it learns in. •Designing a task set that teaches a specific agent capability, then iterating on it from traces and evals until the model actually gets better. •Reading a pile of agent traces, finding a failure mode or a surprising behavior, and building a system that surfaces more of the same. •Turning a one-off recipe into something other teams can reuse: better rewards, cleaner environments, tighter data quality. •Partnering with research on whether a dataset is actually teaching the thing we think it is. •You may be a fit if •You write careful, fast code and have strong software engineering fundamentals. •You like setting tasks: breaking a fuzzy capability into something concrete you can measure. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!