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Lead Windows Engineer at MetalBear. . 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 userspace-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. . 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. . Company Location: United States.