Sr. Model Engineer, RL Data
Cursor, Palo Alto, CA
What you will do
- Design and run rigorous experiments that turn research ideas into measurable gains in model capability
- Improve data recipes through data quality, deduplication, and mixture experiments
- Define what makes RL data and rewards good, including grader design and preventing reward hacking
- Advance training science, from architecture and scaling experiments to post-training recipes for coding and computer-use agents
- Build evals and targeted tasks that expose model weaknesses and guide where the team invests next