Infrastructure engineer, sandboxes. Run thousands of isolated machines a day, in our cloud and in our customers' accounts.

The role

Every Orrin run gets its own microVM, created in seconds and destroyed when the run ends. Some run in our cloud and some in customers' AWS and Google Cloud accounts, where we cannot log in.

You will work with Ravi Menon on making them faster to start, harder to escape and easier to operate from a distance.

What you'll do

• Run and improve our Firecracker sandbox fleet.
• Cut cold starts in customers' accounts, where we control the image but not the machine.
• Build the runner's upgrade, signing and telemetry paths.
• Work with Nadia Karim's security team on isolation and audits.

What we look for

• Four or more years running production infrastructure on Linux.
• Experience with virtualisation or container isolation.
• Go or Rust.
• A calm hand during incidents.

Good to have

• Terraform modules other people install.
• Kernel or hypervisor work.

How we hire

1. 01A call30 minutes with the hiring manager, about the role and what you want next.
2. 02The workA paid take-home or a pairing session, your choice. We pay £400 or $500 for your time.
3. 03The teamHalf a day with the people you would work with, in person or remote.
4. 04An offerReferences, then an offer, usually within a week of the half day.