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Senior Build and CI Infrastructure Engineer (Bazel/Buck2)

United States
Visa Sponsorship
This Job is No Longer Active This position is no longer accepting applications

Own and overhaul the build and CI systems for a GPU compute marketplace, migrating from a mixed TypeScript/Rust/protobuf monorepo to a hermetic, deterministic, and fast build system. Drive reproducibility, remote caching, and execution to support a growing engineering team. Requires senior-level experience with Bazel, Buck2, or similar systems and a strong opinion on build determinism.

Key Highlights
Own the build and CI experience top to bottom, from toolchain pinning to remote execution.
Migrate a TypeScript/Rust/protobuf monorepo to a hermetic, deterministic build system (Bazel, Buck2, or similar).
Reduce CI and local build times, improve cache hit rates, and ensure reproducible artifacts.
Work across application and infrastructure engineers to ensure smooth migration.
Set the long-term roadmap for build, test, and CI as the team and codebase scale 10x.
Key Responsibilities
Audit the current build and test pipeline (Bun for TypeScript, Cargo for Rust, buf for protobuf, plus Docker and Helm) and document failures in reproducibility, hermeticity, and speed.
Pick a build system and migrate the codebase onto it without breaking shipping.
Stand up remote execution and remote caching that actually improve CI and local build times.
Pin toolchains, seal dependencies, and stop the host environment from leaking into builds.
Run the long-term roadmap for build, test, and CI as the team and codebase grow.
Work alongside application and infrastructure engineers throughout the migration.
Technical Skills Required
Bazel Buck2 Pants TypeScript Rust Python protobuf Docker Helm Bun Cargo buf
Benefits & Perks
Generous equity grant
Competitive salary
Visa sponsorship
401(k) matching up to 4%
Medical, dental, and vision insurance (100% of premiums covered)
Unlimited paid time off
10+ observed holidays
Parental leave (biological, adoptive, foster)
Daily lunch
Unlimited office book budget
Nice to Have
Experience moving a codebase onto Bazel (or off of it)
Experience with polyglot or protobuf-heavy monorepos
Prior work on developer infrastructure at an autonomy, robotics, or systems company

Job Description

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.
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