Model Engineer
Cursor is an AI coding-agent product operated by Anysphere, Inc.; it was acquired by SpaceX in August 2026 and continues to operate.
Funding history
About Anysphere, Inc. (doing business as Cursor)
Cursor provides AI-assisted software-development tools, including desktop and CLI coding agents, autonomous cloud agents, code review, and enterprise offerings.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You own hard research problems end to end: forming hypotheses, designing experiments, and building the training, eval, and data needed to test them. You improve data recipes, design RL rewards and graders, advance post-training for coding and computer-use agents, build evals, and partner with engineers to scale promising results to frontier-scale training runs.
Requirements
- Experience writing production-quality code in Python, PyTorch, JAX, Rust, or C++
- Must be able to work in person at the Palo Alto office
Responsibilities
- Design and run rigorous experiments to improve model capability
- Improve data recipes through quality, deduplication, and mixture experiments
- Define good RL data and rewards, including grader design and preventing reward hacking
- Advance training science from architecture and scaling experiments to post-training recipes
- Build evals and targeted tasks that expose model weaknesses
- Partner with engineers to scale results to frontier-scale training runs
Benefits
- Equity
- Comprehensive medical, vision, and dental coverage
- 401(k) retirement plan
- Short and long-term disability insurance
- Life insurance
- Various discounts and perks