Compiler Performance Engineer

Azul

. Analyze performance of Java benchmarks and customer workloads, find gaps in generated code and trace them to their root cause in the compiler .

Posted 10/15/2026full-timeRemote • IndiaJuniorMid-LevelWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in compiler optimization and performance engineering, with a strong foundation in C++ and a solid understanding of low-level architecture. Capable of analyzing and improving code generation for x86_64 and AArch64, while contributing to LLVM and ensuring performance enhancements through rigorous testing.

Highest-signal resume keywords

C++ Design And Coding SkillsCompiler Optimization TheoryLLVM IR And Optimization PassesPerformance Profiling ToolsMicroarchitecture Knowledge

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Compiler EngineeringJIT CompilersPerformance EngineeringCode GenerationLoop OptimizationsVectorizationRedundancy EliminationAssembly LanguageJavaScala

Tools & Technologies

LLVMPerfVTuneAsync ProfilerHotSpot C2GraalGCCV8

Certifications & Qualifications

MSc In Computer SciencePhD In Computer Science

Industry Keywords

X86_64AArch64Compiler OptimizationData Flow AnalysisSSALoop TransformationsCustomer WorkloadsPerformance Impact

Tech Stack

Tools & technologies

AssemblyJavaKotlinScalaC++

About the role

Key responsibilities & impact

Analyze performance of Java benchmarks and customer workloads, find gaps in generated code and trace them to their root cause in the compiler
Implement and improve optimizations in Falcon's middle end and back end, including inlining, loop optimizations, vectorization, redundancy elimination and speculative optimizations
Improve code generation for x86_64 and AArch64
Write tests and benchmarks that prove improvements and protect against regressions
Contribute changes upstream to LLVM where appropriate
Work on real workloads with direct, measurable impact on customer performance

Requirements

What you’ll need

2+ years of professional experience in compilers, JIT compilers or low level performance engineering
Strong C++ design and coding skills
Solid understanding of compiler optimization theory: SSA, data flow analysis, loop transformations
Ability to read assembly and reason about why one instruction sequence is faster than another
Experience with LLVM IR and LLVM optimization passes, or with another optimizing compiler such as HotSpot C2, Graal, GCC or V8
Experience with profilers such as perf, VTune or async profiler
Knowledge of x86_64 and/or AArch64 microarchitecture
Experience with Java, Scala or Kotlin, or with JVM internals
MSc or PhD in Computer Science with a compiler or performance focus

Benefits

Comp & perks

Employee - Full-time - Regular
Remote work arrangement
Opportunity to work with a distributed team of compiler experts
Direct, measurable impact on customer performance