Software Engineer, ML Infrastructure

Cursor; California (MO); On-site; USD 140,000 - 185,000; Full time

Job summary

Cursor is seeking an experienced ML infrastructure engineer to help build and optimize high-performance GPU infrastructure that supports large-scale RL workloads. You will work closely with ML researchers and engineers to enhance training frameworks, reliability, and developer experience.

You will contribute to automation, monitoring, and scalable cluster management, leveraging Python, Typescript, Rust, and Golang across Linux-based environments and Kubernetes.

Qualifications

• Strong background in systems and infrastructure-focused software engineering.
• Proficient in Python, Typescript, Rust and Golang.
• Experience with distributed storage and networking.
• Experience with Kubernetes and Linux-based deployments.

Responsibilities

• Collaborate with ML researchers and engineers to improve throughput and reliability of training.
• Plan and build cutting-edge GPU infrastructure with OEMs and cloud providers.
• Improve density and scalability of compute environments for large RL workloads.
• Create software to automate building, monitoring, and running GPU clusters.
• Develop workload scheduling and data movement systems for Cursor’s training footprint.

Skills

Systems engineering

Python

Typescript

Rust

Golang

Distributed systems

Tools

Kubernetes

Linux

Job description

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

The ML Infrastructure team builds large-scale compute, storage, and software infrastructure to support Cursor’s work building the world’s best agentic coding model. We’re looking for strong engineers who are interested in building high-performance infrastructure and the software to support it. This role works closely with ML researchers and engineers to enable their work through improvements to our training framework, systems reliability/performance, and developer experience.

What you’ll do

• Collaborate with ML researchers to improve the throughput and reliability of training
• Work with OEMs, cloud service providers, and others to plan and build cutting-edge GPU infrastructure
• Improve the density and scalability of compute environments to enable increasingly large RL workloads
• Create software and systems to automate building, monitoring, and running GPU clusters
• Build workload scheduling and data movement systems to support Cursor’s growing training footprint

You may be a fit if

• A strong background in systems and infrastructure-focused software engineering, particularly in Python, Typescript, Rust, and Golang
• Experience with distributed storage and networking infrastructure, particularly on Linux systems across cloud and bare metal environments
• Exposure to large-scale systems and their unique challenges, ideally across thousands of nodes with significant resource footprints.
• Production use of infrastructure-as-code and configuration management, across hosts and Kubernetes

Nice to have

• Operational exposure to Nvidia GPUs with Infiniband or RoCE, particularly with Blackwell and Hopper-class hardware
• Exposure to Ray, Slurm, or other common compute and runtime schedulers

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