Windows Engineer Lead

Description

About MetalBear

We’re building mirrord, an open-source tool that lets developers run their local code as if it’s part of their Kubernetes cluster — without redeploying or mocking anything. It’s built in Rust, used by thousands of engineers, and helps devs escape the slow, painful loop of cloud-native development.

We’re a small, product-led, remote-first startup with a strong open-source backbone. Backed by great investors, recently funded, and halfway to Series A.

The Role

We’re porting mirrord to Windows, and we’re looking for a senior-level engineer to own and lead this project.

This is a greenfield effort — you’ll shape the architecture, choose the right userland primitives (DLL injection, API hooking, async I/O, etc.), and work with the core team to ensure we maintain the developer experience mirrord is known for.

What You'll Do

• Design and implement a user space-compatible port of mirrord to support native Windows environments

• Build or integrate tools for:

  • DLL injection and API hooking

  • Cross-compilation and process spawning for Windows binaries in Rust

• Collaborate with our team to maintain code structure across platforms

• Ensure a clean CLI experience for Windows users

• Ship a minimal working version, then iterate toward full feature parity

How We Work

• Async-first, remote-friendly (we're spread across multiple time zones)

• Small team, big impact: you'll talk directly to the founders and shape core product direction

• We write clean, maintainable code but don’t waste time over-engineering

Requirements

• Strong experience in Windows systems programming

• DLL injection, API hooking, Windows API (CreateProcess, Winsock, etc.)

• Familiarity with Win32 internals

• Solid command of Rust (or willingness to ramp up fast with strong C/C++ background)

• Proven ability to work independently on hairy low-level problems

• Bonus: Familiarity with Kubernetes, networking, or open source tooling

• Even better: Prior experience with Frida, WinDivert, EasyHook, or similar projects