Mac Infrastructure Engineer

Job Overview

Join our mission to accelerate developer workflows and eliminate frustrating bottlenecks. We're proud to work with many incredible companies, helping them build their products faster. After experiencing the pain of slow CI, builds, and tests firsthand, we set out to build a developer infrastructure platform that seamlessly integrates with workflows and makes everything dramatically faster and more cost-effective.

About the Role

Namespace's approach is low-friction, designed for immediate integration into existing developer toolchains, empowering teams to experience tangible results within just five minutes. With an end-to-end stack optimized for high performance—including compute, memory, storage, and networking—Namespace delivers capabilities and efficiencies unmatched by traditional cloud providers.

Namespace provides high-performance, ephemeral compute environments across Linux, Windows, and macOS. Our macOS platform runs on native Apple Silicon (M2 Pro / M4 Pro) and is designed to power demanding developer workflows like Xcode builds, iOS CI, and graphics workloads.

In this role, you’ll be responsible for the full lifecycle of our macOS infrastructure. From provisioning and performance tuning to developer experience and reliability. You’ll work at the intersection of systems engineering, virtualization, and developer tooling to make macOS in the cloud feel fast, predictable, and delightful.

This is a high-impact role: macOS is a critical part of our platform, enabling teams to build and ship Apple ecosystem applications faster with fully isolated, fast-booting environments.

Key Responsibilities

• Own the macOS platform end-to-end: Design, build, and operate our macOS compute offering across Apple Silicon hardware


• Ensure reliability, performance, and scalability of macOS instances


• Improve performance of Xcode builds, caching layers and CI pipelines


• Extend our APIs and platform primitives to better support macOS-specific workflows


• Improve observability and debugging


• Interface with storage, networking, and compute layers to deliver a seamless experience


• Explore new approaches to virtualization, isolation, and remote execution on macOS


• Stay current with Apple ecosystem changes and adapt the platform accordingly


• Work directly with customers running iOS/macOS CI to understand pain points


• Translate real-world workflows into platform improvements

What You Can Expect

Competitive salary and stock options
Flexible working hours
Market-leading parental leave

Life at Namespace Labs

We pride ourselves in being a small team of experts that can achieve a lot.
We balance our long-term vision with short-term pragmatism.
We believe in being fully transparent internally on how decisions are made, on how the company is doing, and we use that information to drive our decisions.