Compiler Performance Engineer

This is a fully remote position, open to applicants in India.

📋 Description

• Evaluate the performance of Java benchmarks and customer workloads, identify deficiencies in generated code, and trace them back to their root causes within the compiler.

• Develop and enhance optimizations in Falcon's middle end and back end, which includes inlining, loop optimizations, vectorization, redundancy elimination, and speculative optimizations.

• Enhance code generation for x86_64 and AArch64 architectures.

• Create tests and benchmarks that demonstrate improvements and safeguard against regressions.

• Contribute relevant changes upstream to LLVM when applicable.

• Engage with real workloads that have a direct and measurable effect on customer performance.

⛳️ Requirements

• Over 2 years of professional experience in compilers, JIT compilers, or low-level performance engineering.

• Excellent C++ design and coding capabilities.

• Strong grasp of compiler optimization theory, including SSA, data flow analysis, and loop transformations.

• Proficiency in reading assembly and analyzing why one instruction sequence may outperform another.

• Experience with LLVM IR and LLVM optimization passes, or familiarity with other optimizing compilers such as HotSpot C2, Graal, GCC, or V8.

• Familiarity with profiling tools like perf, VTune, or async profiler.

• Knowledge of x86_64 and/or AArch64 microarchitecture.

• Experience with Java, Scala, or Kotlin, or with JVM internals.

• A Master's or PhD in Computer Science with a focus on compilers or performance.

🏝️ Benefits

• Full-time regular employee position.

• Flexible remote work arrangement.

• Opportunity to collaborate with a distributed team of compiler specialists.

• Direct and measurable influence on customer performance.