New grad
Push LLVM optimization and code-gen changes that ship in Google's C++ toolchain
This early-career role is on Google's Compilers, Runtimes and Toolchains (CRT) team within Core, working alongside senior SWEs on LLVM optimization and code generation to improve build scalability, toolchain velocity, peak performance, and safety — including landing changes upstream in LLVM. Minimum bar is 1 year of experience with data structures/algorithms and C++/Python development; compiler/toolchain/LLVM knowledge is a plus, not required.
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What this interview tests
- Core data structures and algorithms in C++ and Python
- Compiler/toolchain fundamentals: optimization passes, code generation
- Build scalability and toolchain performance thinking
- Debugging and reasoning about correctness in systems-level code
- Collaboration on a shared codebase with upstream (LLVM) dependencies
Common question themes
Standard data structures & algorithms coding question in C++ or Python
Explain what a compiler optimization pass does and why correctness matters there
How would you approach debugging a subtle code-generation bug
Tell me about a low-level or systems programming project you've done
How would you contribute a change to a shared upstream project like LLVM responsibly
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