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Software Engineer, Model Routing & Inference

Location
New York
Compensation
Not disclosed
Level
mid
Type
full time

Requirements

Experience
5+ years

Joblaze summary

In the role of Software Engineer on the Model Routing & Inference team at Cursor, the individual will focus on developing the inference platform that underpins all AI interactions within the product. Key skills include expertise in high-throughput, low-latency distributed systems and a strong grasp of cost-performance tradeoffs at scale. This position is ideal for experienced engineers who thrive in dynamic environments and enjoy tackling complex challenges. Cursor's flat organizational structure fosters a collaborative atmosphere where innovative ideas are encouraged.

Joblaze insights

Quick facts

How much experience is required?
At least 5 years of relevant experience for this Software Engineer, Model Routing & Inference role.
What's the tech stack?
Joblaze extracted these technologies from the posting: AI/ML, distributed systems, real-time data pipelines, traffic routing, inference serving.
What seniority level is this role?
Cursor targets mid-level candidates for this position.
Is this full-time or contract?
Full-time for this Software Engineer, Model Routing & Inference role at Cursor.

From the original posting

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

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