140K–225K USD / year
Software Engineer, Model Lifecycle and Signals
AIOn-site — New York, NY, San Francisco, CA
Published on 2026-11-10
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About this role
Build systems that connect frontier models to user-facing products, including model routing, evaluation, and experimentation. Use real-world product signals to improve model selection, quality, and product outcomes.
About the company
Cursor builds an AI coding editor and agent workflows that help developers write and ship software faster. It serves software teams looking for tighter AI assistance inside the IDE.
The team
Model Lifecycle and Signals team at SpaceXSI.
What you'll do
- Launch new models in production and retire older models smoothly
- Evaluate preview models and provide actionable feedback to model-building teams
- Build model routing that balances quality, speed, and cost
- Develop product signals and experimentation systems to measure model performance
What we're looking for
- Bachelor's degree in a relevant discipline or at least 2 years of professional software development experience
Nice to have
- Experience with production systems, model evaluation, experimentation, ranking, relevance, model serving, or routing
- Ability to translate ambiguous quality questions into metrics and decisions
- Strong data skills and experience collaborating with researchers and data scientists
- Curiosity about model and agent behavior
Benefits
- Equity
- Medical, vision, and dental coverage
- 401(k) plan
- Short- and long-term disability insurance
- Life insurance