Software Engineer, Hermetic Build

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Sfcompute · San Francisco, CA

$175K–$250K/yrFull-timeOn-site1w ago

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About the role

We need someone who has run a serious build system at a previous job, ideally a large Bazel monorepo, and wants to do it again here. Our codebase is a TypeScript monorepo, a Rust workspace, a protobuf layer that wires them together, and a growing pile of services and container images. CI works. It isn't hermetic, it isn't deterministic, and the cache hit rates are nowhere near where they should be. That's the work. You'll own the build and CI experience top to bottom. We're not religious about Bazel. If Buck2 fits better, or a simpler setup gets us 80% of the value, that's fine. The goal is local and CI builds that produce the same artifact, fast incremental feedback for every engineer, and a credible roadmap for what this looks like at 10x our current size.

Additional Information

We're building the company which will de-risk the largest infrastructure build-out in history. When people finance GPU clusters, the datacenters housing them, and the infrastructure powering them, they need "offtake" - meaning someone has signed a contract to lease the cluster for a period of time before its even built. Financing a GPU cluster is inherently risky, since margins are thin and volumes are huge. Lenders don't want to take on the risk that cluster developers can't repay their loan, and cluster developers really don't want to risk not selling their cluster. As a result, risk is offloaded to the customer using fixed-price long-term contracts. If you don't mitigate this customer risk, there's a bubble. This isn't SaaS anymore - application layer companies sign multi-year contracts for computer and inference, but sell to customers on monthly subscriptions. If you mess up a purchase, it's game over: a minor shift in your revenue growth rate might mean the difference between profit or bankruptcy. But what if companies could exit their contract by selling it back to the market? Otherwise, as AI scales, compute only becomes available to folks who can effectively take on that risk. A 2-person startup in a San Francisco Victorian can't realistically sign a 5-year take or pay contract on $100m supercomputers. But they may be able to buy the month of liquidity that someone else sold back. So that's what we make: a liquid market for GPU offtake. About SF Compute The San Francisco Compute Company runs large-scale GPU clusters (H100s, H200s, B300s) on contracts you can exit. Need 256 H100s for three days? Buy them at market price, cancel what you don't use. We operate the stack from UEFI up, so you're never paying a reseller markup or waiting on a support ticket. Customers include NVIDIA, MIT, Liquid AI, and Roboflow. We're a small team that has managed over $1B of hardware and is building what we think will be the defining infrastructure marketplace for the AI era.

Software Engineer, Hermetic Build

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