Join Apple's OS Performance Tools team to impact the performance of products used by billions worldwide. This full-stack engineer role focuses on developing cutting-edge performance analysis tools and services across various platforms, including iOS, macOS, and more. You will work at the intersection of operating systems, large-scale data analytics, and developer tooling. This position offers a unique opportunity to enhance product performance while providing developers with essential tools and data.

• 2+ years of experience building performant full-stack web applications using HTML, CSS, and JavaScript.
• Experience proposing and prototyping new services and solutions.
• Knowledgeable with SQL and NoSQL database technologies.
• Excellent spoken and written communication skills.
• Passion for product quality and exploring the latest technologies.
• Experience with ES6, Node.js, and Angular.
• Experience in diagnosing and improving performance at multiple layers of the stack.
• Understanding of operating system fundamentals.
• Prior development experience in Unix, Linux, macOS, or iOS.
• Experience with large data processing and visualization.

• Work on performance tools and services that model various aspects of Apple's operating systems.
• Create groundbreaking web services for analyzing and solving usability and performance issues.
• Enable teams to tackle challenging multi-functional performance problems.
• Provide developers with tools and data to write high-performing applications.

• 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.