The WebKit Performance team is seeking a passionate engineer focused on software optimization to enhance one of the most widely used frameworks globally. This role involves improving the performance of WebKit, which is essential for rendering web content on Apple platforms. The engineer will work on optimizing launch speed, processing speed, memory usage, and power consumption. Additionally, the position includes diagnosing performance issues and mentoring others in performance improvement techniques.

• BS in Computer Science or equivalent work experience
• Expertise in C++
• Experience with software performance measurement, analysis, and optimization
• Detailed understanding of data structures and algorithms
• Experience with pointers, memory management, threads, and processes
• At least 4 years of prior hands-on iOS or macOS application development
• Experience with Objective-C, Swift, and Cocoa APIs
• Experience with web technologies such as HTML, CSS, JavaScript, SVG, WebGL, and WebGPU
• Experience with UIKit and AppKit
• Excellent debugging, analysis, communication, and critical thinking skills

• Seek opportunities to improve WebKit performance as measured by execution time, memory consumption, and power use
• Diagnose performance issues identified in benchmarks and web applications
• Identify and correct recent performance regressions
• Help train and mentor others in performance improvement techniques

• 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.