JobsOS Performance Engineer, CoreOS
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OS Performance Engineer, CoreOS

Apple

Location

Cupertino, CA

Type

Full-time

Posted

5/8/2026

Compensation

Not listed

Undergraduate with 2+ Years of Experience
Approval 98.9%·Filings 5,543·New hires 2,691·
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·FY 2025

Job description

The OS Performance team at Apple is looking for a Systems Engineer to enhance performance across Apple's software and hardware ecosystem. This role involves optimizing performance from high-level applications to low-level kernel components. The engineer will address performance issues and collaborate with various teams to develop solutions. This position offers the chance to impact user experience for millions of customers by ensuring devices perform smoothly and responsively.

Requirements

  • Bachelor's degree in Computer Science, related technical field or equivalent professional experience
  • Strong understanding of OS fundamentals
  • Proficiency in C/C++ or other system programming languages
  • Experience in Systems Engineering
  • Strong understanding of computer architecture, compilers, and low-level programming languages
  • Experience with kernel development
  • Experience in performance analysis, optimization, and debugging
  • Experience with performance profiling tools and methodologies
  • Excellent communication, teamwork, and organizational skills

Responsibilities

  • Drive performance excellence across Apple's software and hardware ecosystem
  • Optimize performance on currently supported hardware and next-generation products
  • Work with cross-functional partner teams to address performance issues
  • Develop innovative performance optimization ideas from conception to delivery
  • Create measurement tools and analysis frameworks
  • Establish testing methodologies that reflect real-world usage

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.

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