C++ Toolchain Engineer

A tier-one HFT firm looking to hire a C++ Toolchain Engineer to work on the build, compiler and developer infrastructure supporting a large performance-critical C++ codebase.

This is a hands‑on engineering role for someone interested in the infrastructure that allows highly technical C++ teams to build, test and ship software quickly and reliably.

What you’ll work on:

• Build and improve C++ toolchain and build infrastructure
• Work with LLVM/Clang, GCC and modern C++ compilers
• Improve compilation, linking and build performance
• Develop infrastructure around Bazel, CMake, Buck2 or similar build systems
• Work on remote execution, distributed builds and build caching
• Profile and eliminate bottlenecks across large C++ codebases
• Improve CI/CD, testing and release infrastructure
• Build internal developer tooling used by C++ engineers across the firm

What we’re looking for:

• Strong C++ and Linux engineering background
• Experience with build systems, compilers or developer infrastructure
• Understanding of compilation, linking and C++ tool chains
• Experience with Bazel, CMake, Buck2, Ninja or similar
• Strong systems and performance engineering fundamentals
• Comfortable working across large and complex C++ codebases

Experience with LLVM/Clang, compiler internals, linkers, remote execution, monorepos, distributed build systems or performance optimisation would be particularly relevant.