Staff Compiler Performance Engineer

What You Will Do (aka Responsibilities)

Define the performance strategy for Falcon: identify the largest opportunities across benchmarks and customer workloads and turn them into a technical roadmap
Lead design of complex, cross cutting optimizations in the optimizer and code generator, and of the interfaces between the compiler, the runtime and the garbage collector
Make architectural decisions on the Falcon optimization pipeline, compile time budget and tiering strategy
Lead enablement of Falcon on new hardware platforms and new Azul products
Mentor senior engineers, review critical designs and code, and set standards for performance methodology and validation
Represent Azul in the LLVM community: drive upstream design discussions and contributions that benefit managed language compilers

What You'll Bring (aka Experience, Skills)

8+ years of professional experience developing optimizing compilers or JIT compilers
Track record of technical leadership: owning the design of major compiler components or optimization frameworks used in production
Expert C++ skills and experience in large, long lived codebases
Deep expertise in compiler optimization and code generation, with a clear view of the tradeoffs between peak performance, compile time, warmup and code size
Expert performance analysis skills down to the microarchitecture level

Nice to Have

Recognized contributions to LLVM or another major compiler: code owner, maintainer or author of significant upstream work
Deep experience with JIT compilers for managed languages: HotSpot C2, Graal, V8, .NET RyuJIT or similar
Experience working closely with runtime and GC teams on speculation, deoptimization and barrier design