JavaScript Virtual Machine Compiler Engineer jobs in United States
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Apple · 1 week ago

JavaScript Virtual Machine Compiler Engineer

positionCupertino, CA
timeFull-time
remoteOnsite
seniorityMid, Senior Level
money$147K/yr - $272K/yr

Apple is seeking a JavaScript Virtual Machine Compiler Engineer to enhance the performance and security of JavaScriptCore. This role involves improving the JIT compilers, runtime systems, and garbage collector, while also contributing to the evolution of JavaScript and WebAssembly standards.

AppsArtificial Intelligence (AI)BroadcastingDigital EntertainmentFoundational AIMedia and EntertainmentMobile DevicesOperating SystemsTVWearables
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Comp. & Benefits
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H1B Sponsor Likelynote

Responsibilities

Push the state of the art of JavaScript and WebAssembly performance
Deliver a faster and more secure web for all Apple products by improving JavaScriptCore’s JIT compilers, runtime systems, and garbage collector
Work across all areas of the engine, improving performance, security, and stability, as well as compatibility with other browsers
Guide the evolution of the JavaScript and WebAssembly languages via public standards
Drive new innovations, add new optimizations, tune performance, implement language features, and diagnose and fix existing problems

Qualification

C++CompilersJavaScriptWebAssemblyDebuggingPerformance analysisMemory allocatorsAssembly-level programmingJust-in-time compilersWeb browsersCritical thinkingCommunication skills

Required

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

Preferred

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

Benefits

Comprehensive medical and dental coverage
Retirement benefits
A range of discounted products and free services
Reimbursement for certain educational expenses — including tuition
Discretionary bonuses or commission payments
Relocation

Company

Apple

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Apple is a technology company that designs, manufactures, and markets consumer electronics, personal computers, and software.
dateFounded in 1976
location
Cupertino, California, USA
people-size10001+ employees
web-link
https://www.apple.com

H1B Sponsorship

Apple has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (6998)
2024 (3766)
2023 (3939)
2022 (4822)
2021 (4060)
2020 (3656)

Funding

Current Stage
Public Company
Total Funding
$5.67B
Key Investors
Berkshire HathawayMicrosoftSequoia Capital
2025-05-05Post Ipo Debt· $4.5B
2025-01-16Post Ipo Debt· $0.31M
2021-04-30Post Ipo Equity

Leadership Team

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Tim Cook
CEO
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Craig Federighi
SVP, Software Engineering

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Company data provided by crunchbase