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Software Engineer - Systems Performance, CoreOS

2 days ago• San Diego, CA

The OS Performance team is looking for a software developer with a keen understanding of app development and systems design to support our efforts building Apple's family of operating systems. Our work enables iOS, macOS, tvOS, and watchOS to perform well, and gives developers the platform they need to easily write great performing apps.

A successful candidate may have experience with a specific layer of software (e.g. embedded, UI, server) but more importantly an interest in learning how the entire stack and flow of information works. The ideal candidate would also not only understand the fundamentals of designing and implementing a performant application for iOS, macOS, tvOS, or watchOS, but also have an appreciation for using data to drive decision making in software development.

Description

Work on various aspects of Apple's operating systems to tackle challenging multi-faceted performance problems. You will be solving problems in the areas of usability/UX, cross-platform compatibility, API design, and performance of the operating system. You will also have the opportunity to work directly with app developers on Apple platforms to discover and resolve API gaps. An ideal candidate will be ambitious and grow to understand many layers of software.

Responsibilities:

Analyzing app performance issues and engaging with systems teams to resolve those issues.

Building tools to better characterize performance issues that apps encounter on Apple platforms.

Influencing cross-functional teams across Software Engineering to pursue new features that better support apps.

Preferred Qualifications

App development experience on iOS, macOS, watchOS, tvOS, or visionOS

Understanding of Operating System fundamentals

Strong expertise using Objective-C or Swift

Practical knowledge of Apple SDK technologies like SwiftUI, Swift Data, Swift Concurrency, etc.

Minimum Qualifications

Expertise in at least one layer of software development (embedded, UI, server)

You understand how to apply data science rigor to decision making in software development

Aptitude to independently learn new technologies, prototype, and propose software design and solutions

Passion for product quality and attention to detail

Self-motivated and able to work independently

Excellent problem-solving and critical thinking

Prior development in Unix, Linux, or macOS

Excellent spoken and written communication

CS degree or equivalent experience

Pay & Benefits

At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $142,300 and $263,300, and your base pay will depend on your skills, qualifications, experience, and location.

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Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan. You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits

Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

Client-provided location(s): San Diego, CA
Job ID: apple-200687817-3543
Employment Type: OTHER
Posted: 2026-10-20T00:19:31

Perks and Benefits

  • Health and Wellness

    • Parental Benefits

      • Work Flexibility

        • Office Life and Perks

          • Vacation and Time Off

            • Financial and Retirement

              • Professional Development

                • Diversity and Inclusion

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