Senior JavaScript Virtual Machine Compiler Engineer

Apple

Posted on : 20-08-2025

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1 Vacancy

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Job Location

Cupertino, CA - USA

Monthly Salary

Not Disclosed

Salary Not Disclosed

Vacancy

1 Vacancy

Posted on : 20-08-2025

Job Description

The JavaScriptCore team in WebKit is responsible for the JavaScriptCore engine and our mission is to make JavaScript and WebAssembly execution both fast and secure. JavaScriptCore engineers work on all aspects of the engine: the compilation pipeline the language runtime the garbage collector and the API for native apps. The compilation pipeline consists of the parser the bytecode frontend profile-guided type profiling and multiple optimizing compiler backend that turn JS and Wasm programs into efficient ARM and x86 machine this role you will work across all areas of the engine improving the performance security and stability of the engine as well as compatibility with other browsers. You will also help guide the evolution of the JavaScript and WebAssembly languages via public standards. You will drive new innovations add new optimizations tune performance implement language features in addition to diagnosing and fixing existing problems.

BS in computer science or equivalent
Experience programming in modern C
Excellent debugging critical thinking and communication skills
Experience with compilers parsers and interpreters
Experience with assembly-level programming
Experience with performance analysis
Experience with memory allocators and garbage collectors

Hands-on experience with VMs with just-in-time compilers (e.g. JavaScript engines and JVMs)
Experience with web browsers
Knowledge of JavaScript and WebAssembly

Required Experience:

Senior IC

Employment Type

Full Time

Company Industry

Key Skills

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About Company

Apple

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Senior JavaScript Virtual Machine Compiler Engineer

Apple

Job Description

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