← All roles

JavaScriptCore Security Engineer

Apple· Software and Services
Apply on company site
Cupertino, CA$150.4k - $277.6kfull-timePosted 6mo ago

About the role

Role focused on securing the JavaScriptCore VM within Apple's WebKit/JavaScriptCore engine. Work across the engine’s subsystems to improve security, respond to fuzzing, fix security issues, and drive security architecture and processes for a secure future.

Responsibilities

  • Improve security and stability across all areas of the JavaScriptCore engine (compilation pipeline, language runtime, garbage collector and memory allocators, and native API interactions).
  • Drive new innovations in the security architecture of the codebase.
  • Fix security issues and respond to fuzzing.
  • Ensure security processes in JavaScriptCore are up to date with current best practices and set the project up for a secure future.

Qualifications

  • BS in computer science or equivalent
  • Experience programming in modern C++
  • Excellent debugging, critical thinking, and communication skills
  • Experience developing privacy and security-sensitive software
  • Experience with compilers, parsers, and interpreters
  • Experience with assembly-level programming
  • Hands-on experience with VMs with just-in-time compilers (e.g. JavaScript engines and JVMs)
  • Experience with web browsers
  • Experience with memory allocators and garbage collectors
  • Experience with fuzzing, security architecture, and memory safety
  • Knowledge of JavaScript and WebAssembly

Skills

Required:C++DebuggingSecurity engineeringVirtual machines / JITJavaScript / WebAssembly

Benefits

  • Comprehensive medical and dental coverage
  • retirement benefits
  • discounted products and free services
  • reimbursement for certain educational expenses (tuition)
  • discretionary bonuses or commission payments (potential)
  • relocation assistance
  • employee stock purchase plan participation
  • discretionary employee stock awards (RSUs) via eligibility
Last updated Jul 3, 2026. Interested? Apply on the company site.

About Apple

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support.

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support.

AirPods Max 2Apple ArcadeApple CardApple Fitness+Apple MusicApple TVApple TV+Apple Watch Series 11
Company profileWebsite

More open roles at Apple