In this role, you will help secure the JavaScriptCore virtual machine at Apple. The JavaScriptCore team focuses on making JavaScript and WebAssembly execution both fast and secure. You will work on improving security and stability across all areas of the engine while addressing unique security challenges. This position involves driving innovations in the security architecture and ensuring best practices are followed.

• 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
• Experience with web browsers
• Experience with memory allocators and garbage collectors
• Experience with fuzzing, security architecture, and memory safety
• Knowledge of JavaScript and WebAssembly

• Work across all areas of the JavaScriptCore engine to improve security and stability.
• Drive new innovations in the security architecture of the codebase.
• Fix security issues and respond to fuzzing.
• Ensure that security processes in JavaScriptCore are updated to current best practices.
• Set the project up for a secure future.

• 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.