Software Engineer, Model Routing & Inference

cursor· Engineering
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📍 New York📍 San FranciscoFullTime

About this role

Our mission is to automate coding. The first step in our journey is to build the best tool for professional programmers, using a combination of inventive research, design, and engineering. Our organization is very flat, and our team is small and talent dense. We particularly like people who are truth-seeking, passionate, and creative. We enjoy spirited debate, crazy ideas, and shipping code.

About the Role

As a Software Engineer on the Model Routing & Inference team at Cursor, you'll build the inference platform that powers every AI interaction in the product.

This team owns the full inference path: making Cursor's AI faster, more reliable, and more cost-effective at a scale few teams in the world get to operate at. Every agent session, every tab completion, and every chat message flows through your stack.

Example projects include...

  • Building and evolving our inference gateway, a single abstraction over every provider's API semantics, so model onboarding becomes a config change.

  • Designing intelligent cross-provider failover so no single provider outage causes user-visible degradation.

  • Designing routing backpressure and admission control so traffic spikes don't cascade into providers.

You may be a fit if

  • You have deep experience building high-throughput, low-latency distributed systems, especially in inference serving, traffic routing, or real-time data pipelines.

  • You're comfortable reasoning about cost/performance tradeoffs at scale (GPU utilization, provider economics, capacity planning).

  • You have strong software engineering fundamentals and enjoy shipping production systems that handle millions of requests.

  • You make good calls in the gray area: weighing reliability, cost, latency, and user experience when there isn't a single "right" answer.

Applying

If there appears to be a fit, we'll reach to schedule 2-3 short technicals. After, we'll schedule an onsite in our office, where you'll work on a small project, discuss ideas, and meet the team.

#LI-DNI

Frequently Asked Questions

Is the salary disclosed for the Software Engineer, Model Routing & Inference position at cursor?
The salary for this Software Engineer, Model Routing & Inference role at cursor is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Software Engineer, Model Routing & Inference position at cursor located?
This Software Engineer, Model Routing & Inference role at cursor is based in New York, San Francisco. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Software Engineer, Model Routing & Inference role at cursor full-time or part-time?
This is listed as a FullTime position. It is posted as a Software Engineer, Model Routing & Inference role in the Engineering department at cursor.
Which team or department does the Software Engineer, Model Routing & Inference at cursor belong to?
This Software Engineer, Model Routing & Inference position is part of the Engineering department at cursor. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Software Engineer, Model Routing & Inference position at cursor?
Click the "Apply Now" button on this page. You will be redirected to cursor's official application portal hosted on ashby where you can submit your application directly.
When was the Software Engineer, Model Routing & Inference job at cursor posted?
This Software Engineer, Model Routing & Inference position at cursor was posted on Apr 7, 2026. Apply as soon as possible — early applications are often reviewed first.
Software Engineer, Model Routing & Inference
cursor
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