Build the sandbox infrastructure for coding agents and VMs at SpaceXAI, contributing to the development of Super Intelligence.
Posted by employer 6 hours ago
First seen on Joblaze 2 hours ago
Last verified on the company career page 2 hours ago
Skills & Technologies
What you'll build
- Rearchitecting the control plane / scheduler to support 1 million concurrent VMs per cluster
- Building a ublk block device that can dedupe, lazy load, and efficiently snapshot VM data
- Designing an egress proxy and network isolation to securely filter, monitor, and route agent traffic
- Designing resilient systems that can operate across a mixture of cloud and on-premise datacenters
Must have
- Bachelor's degree in computer science, engineering, math, or scientific discipline; OR 2+ years of professional experience building software in lieu of a degree
Nice to have
- Deep experience with building compute orchestration (e.g. Kubernetes, Mesos)
- Built and operated large fleets of VMs / isolated sandboxes
- Experience with the Linux kernel and virtualization technologies
- Enjoy thinking about infrastructure primitives that future agents will require
Requirements
- Experience
- 2+ years
- Education
- Bachelor's degree
Not disclosed in this posting: compensation, work arrangement, visa sponsorship.
Joblaze summary
In the role of Software Engineer for Compute Infra at SpaceXAI, the individual will focus on developing the infrastructure that supports virtual machines for various coding agents and applications. Key skills include experience with compute orchestration tools like Kubernetes and a strong understanding of virtualization technologies and the Linux kernel. This position is suited for someone with a solid background in software engineering, particularly those who have worked with large-scale VM deployments. The team operates one of the largest sandbox clusters globally, emphasizing innovative infrastructure solutions.
Joblaze insights
- Listed today — first seen on Joblaze October 23, 2026. Last confirmed on Cursor's careers page October 23, 2026.
- Linux appears in 5.2% of 3146 comparable mid other roles in United States; Virtualization appears in 0.1% of 3146 comparable mid other roles in United States.
Quick facts
- How much experience is required?
- At least 2 years of relevant experience for this Software Engineer, Compute Infra role.
- What's the tech stack?
- Joblaze extracted these technologies from the posting: Kubernetes, Linux, Mesos, Virtualization.
- 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, Compute Infra role at Cursor.
From the original posting
About the Role
As a Software Engineer on Compute Infra at SpaceXAI, you'll build the sandbox infrastructure to give every agent their own VM. These VMs power coding agents, Grok Bot, reinforcement learning, and more. We operate one of the largest set of sandbox clusters in the world, at millions of CPU cores, across third- and first-party datacenters. You’ll own developing a cloud for agents, including the virtualization layer (Firecracker and Cloud Hypervisor microVMs), control plane scaling, and the networking/connectivity layer on top.
Responsibilities
Rearchitecting the control plane / scheduler to support 1 million concurrent VMs per cluster.
Building a ublk block device that can dedupe, lazy load, and efficiently snapshot VM data.
Designing an egress proxy and network isolation to securely filter, monitor, and route agent traffic.
Designing resilient systems that can operate across a mixture of cloud and on-premise datacenters.
Basic Qualifications
Bachelor's degree in computer science, engineering, math, or scientific discipline; OR 2+ years of professional experience building software in lieu of a degree
Preferred Skills and Experience
You have deep experience with building compute orchestration (e.g. Kubernetes, Mesos).
You have built and operated large fleets of VMs / isolated sandboxes.
You have experience with the Linux kernel and virtualization technologies.
You enjoy thinking about infrastructure primitives that future agents will require.
Standard company text repeated across Cursor's postings is omitted here.