Founding Engineer (AI-first)

San Francisco, CA
Full-time
Visa Sponsorship

About the role

passion > intelligence > knowledge. no specific domain knowledge is required, though it helps. we care more that you are obsessed with building systems that work beautifully, that you notice when something is slightly wrong, and that you will not rest until it is better than it was.

bonus points if you:

  • think a lot about what makes companies AGI-proof
  • were an early claude code / codex / GPT 3 user
  • obsessed with AI improvement fly wheels
  • are ready to make huge sacrifices in order to make ix succeed.

the stack:

  • hypervisor we wrote our own VMM on top of KVM. it can fork a running sandbox in milliseconds.
  • storage all data flows through a content-addressable storage engine with tiered caching and automatic deduplication across tenants.
  • transport the storage fabric runs over libfabric so we can move from TCP to RDMA without rewriting application code.
  • filesystem guests see local filesystems backed by the content-addressable storage layer.
  • nix we vendor a custom fork of snix (nix reimplemented in rust) for reproducible builds.
  • kernel we maintain a custom linux 6.19 kernel with patches for features upstream does not support yet.
  • tooling we maintain a custom clippy so that agents write code that meets our standards without waiting on upstream.

About Indexable

We provide sandbox infrastructure for AI agents.

Agents can fork real environments, run code, use the terminal, and roll back or branch again in milliseconds. We work across the full stack, from virtualization and storage to SDKs and developer UX, with a strong bias toward correctness, performance, and simple systems.

Required skills

C
Rust
Unix

Interested?

Let me introduce you to the founders.

Skip the process

Job details

Salary

$150,000 - $175,000

Equity

0.75% - 1.5%

Location

San Francisco, CA

Experience

3+ years

Company

NameIndexable
IndustryInfrastructure
Team Size3

Funding

Last stage

Seed

Investors

Y Combinator

Founders

Andrew Gazelka

Andrew Gazelka

Founder

LinkedIn

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.