Senior JavaScript Virtual Machine Compiler Engineer

Job Description

The JavaScriptCore team at Apple is looking for system programmers with compiler and virtual machine experience to improve JavaScript and WebAssembly performance.

Requirements

• 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

Responsibilities

• Improve the performance, security, and stability of the JavaScriptCore engine
• Enhance compatibility with other browsers
• Guide the evolution of JavaScript and WebAssembly languages via public standards
• Drive new innovations, add optimizations, tune performance, and implement language features

Benefits

• Employees at Apple are often offered comprehensive benefits that support physical and mental well-being—flexible medical plans, confidential counseling, onsite wellness centers at major campuses, and resources for fitness and daily life. Families typically receive fertility support, paid parental leave with gradual return, caregiving leave, and dependent-care guidance, while financial perks commonly include stock grants (with purchase discounts), 401(k) matching, and income-protection coverage. Employees also see robust time off, Apple University learning and tuition reimbursement, donation matching and paid volunteer hours, and deep product and partner discounts.