Senior Compiler & Toolchain Engineer (LLVM/GCC)

Nuvacore; United States; On-site; USD 140,000 - 250,000; Full time

Job summary

Nuvacore is building a high-performance CPU and is seeking a Compiler & Toolchain Engineer to advance its GCC/LLVM toolchains, core libraries, and runtime environments. You will work near the metal, implementing machine models and optimizing codegen across architectures.

You will partner with CPU architects to extract performance, diagnose codegen issues, and contribute upstream changes. The role emphasizes collaboration, performance analysis, and toolchain maturation.

Qualifications

• 15+ years of professional experience in compiler internals (LLVM and/or GCC).
• Strong understanding of compiler backend construction: instruction selection, register allocation, and code generation.
• Low-level programming experience targeting x86, ARM, or RISC-V architectures.
• Proven experience debugging functional and performance issues in large, complex software systems.
• Experience with modern automated software development methodologies (CI/CD, automated testing, code review tooling).
• Strong written and verbal communication skills.
• Demonstrated ability to collaborate across functional teams and work across domains (compiler, architecture, firmware).
• Experience with performance analysis of large-scale system-level applications including JIT environments and multiple languages.

Responsibilities

• Design, implement, and maintain compiler backend support (instruction selection, scheduling, register allocation, code generation) for Nuvacore's ISA across GCC and/or LLVM
• Diagnose and resolve codegen correctness bugs and performance regressions across the toolchain, from source to machine code
• Track and integrate upstream LLVM/GCC changes, and contribute upstream where it benefits the broader ecosystem
• Drive toolchain architecture decisions that span software/hardware and set direction for the compiler team
• Performance optimization of system libraries and dynamic language environments

Skills

LLVM/GCC backend

Backend design

x86/ARM/RISC-V

CI/CD

Code debugging

Job description

Nuvacore is building a high-performance CPU and is seeking a Compiler & Toolchain Engineer to advance its GCC/LLVM toolchains, core libraries, and runtime environments. You will work near the metal, implementing machine models and optimizing codegen across architectures.

You will partner with CPU architects to extract performance, diagnose codegen issues, and contribute upstream changes. The role emphasizes collaboration, performance analysis, and toolchain maturation.