Staff Software Engineer, Build Systems

TL;DR

Staff Software Engineer (Build Systems): Designing and building scalable, hermetic build infrastructure, including remote build execution (RBE) and content-addressable storage (CAS) systems, supporting source and image builds. Focus on managing fine-grained dependencies, optimizing container image build times, and ensuring seamless integration with the broader developer platform.

Location: Hybrid - expected to be in one of hirify.global's offices at least 25% of the time in San Francisco, CA or New York City, NY.

Salary: $405,000 - $485,000 USD

Company

hirify.global’s mission is to create reliable, interpretable, and steerable AI systems, ensuring AI is safe and beneficial for users and society.

What you will do

• Design and build scalable, hermetic build infrastructure, including remote build execution (RBE) and content-addressable storage (CAS) systems.
• Own and evolve Nix-based build environments and package management.
• Drive fine-grained dependency management across the monorepo to enable incremental builds.
• Build and maintain language-specific build toolchains and accelerator SDK/runtime builds.
• Reduce container image build times through architectural improvements to build pipelines.
• Partner with CI, Languages, and Developer Acceleration teams.

Requirements

• 10+ years of experience building and operating large-scale build systems and infrastructure.
• Deep experience with hermetic, reproducible build systems (Bazel, Buck, Nix, or similar) in a large monorepo environment.
• Understand build caching strategies, remote execution, and content-addressable storage.
• Experience with containerized build environments and image build pipelines.
• Strong proficiency in at least one of Python, Rust, or Go.
• Excellent communication skills.

Nice to have

• Experience with Nix/NixOS and managing large Nix package sets at scale.
• Experience with Rust build toolchains (cargo, maturin) and Python-Rust interop.
• Experience building or operating remote build execution systems (Bazel Remote Execution API, BuildBarn, BuildBuddy, or similar).
• Experience managing accelerator SDK builds (CUDA, Neuron SDK, JAX/XLA).
• Experience with fine-grained dependency graph analysis and incremental build optimization at monorepo scale.

Culture & Benefits

• Competitive compensation and benefits.
• Optional equity donation matching.
• Generous vacation and parental leave.
• Flexible working hours.
• Collaborative office space.