For EmployersCoach ConnectReviewsAbout FairygodbossCareers @ FairygodbossPrivacy PolicyTerms & Conditions
Fairygodboss
CommunityJobsAdviceEventsReviewsFor EmployersCoach Connect
Sign inGet StartedGet started
CommunityJobsAdviceEvents
Apple

JavaScript Virtual Machine Compiler Engineer

24 days ago• Cupertino, CA

About us

Working at Apple means doing more than you ever thought possible and having more impact than you ever imagined.

★ 3.7 out of 5 · 120 reviews

  • Size: 10,000+ employees
  • Industry: Technology: Manufacturing
View company profile ›

Why you should apply for a job to Apple:

  • Ranked as one of the Best Technology Companies in 2020
  • 3.7/5 in overall job satisfaction
  • 3.1/5 in supportive management
  • 66% say women are treated fairly and equally to men
  • 65% would recommend this company to other women
  • 66% say the CEO supports gender diversity

Ratings are based on anonymous reviews by Fairygodboss members. See all reviews ›

In this role, you have the opportunity to push the state of the art of JavaScript and WebAssembly performance. The JavaScriptCore team at Apple is looking for system programmers with compiler (especially just-in-time) and virtual machine experience. You will be working to deliver a faster and more secure web for all Apple products by improving JavaScriptCore's already world-class JIT compilers, runtime systems, and the garbage collector. The work is challenging, and the impact is worldwide. Join us.

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 code.

In 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.

Preferred Qualifications

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

Minimum Qualifications

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

Pay & Benefits

At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $150,400 and $277,600, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan. You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits

Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

Want more jobs like this?

Get jobs in Cupertino, CA delivered to your inbox when you sign up.

Additional Information

  • Salary: $150,400 – $277,600
  • Posted: 24 days ago
Apply on company site
Apply on company site

Suggested Searches

  • Apple Jobs
  • All Jobs

Search Additional Jobs

  • Remote-Friendly JavaScript Virtual Machine Compiler Engineer Jobs
  • Cupertino, CA Jobs
Fairygodboss

Fairygodboss

  • Community Guidelines
  • Submissions & Editorial Guidelines
  • Privacy Policy
  • Terms & Conditions
  • The Muse

Advice

  • Community
  • Articles
  • Podcasts
  • Research
  • Pregnancy Week by Week
  • Browse Discussions

Jobs

  • Browse All Jobs
  • Remote Jobs
  • Company Reviews
  • Best Companies for Women

Events

  • Events Calendar
  • Virtual Career Fairs

Employers

  • Partner with Us

© 2026 FGB Muse Group Inc.

© 2026 FGB Muse Group Inc. All rights reserved.

  • About
    • About Us
    • Community Partners
  • Careers
  • FAQs
    • Community Guidelines
    • Submissions & Editorial Guidelines
  • Privacy Policy
  • Terms & Conditions