OS Performance Engineer, CoreOS

Cupertino, California, United States$150,400 - $277,600

The OS Performance team at Apple is seeking an exceptional Systems Engineer to drive performance excellence across Apple's software and hardware ecosystem. This role involves working across the full software stack—from high-level applications and frameworks to low-level kernel components—ensuring that Apple delivers world-class performance on supported products. The position presents diverse challenges spanning from optimizing performance on currently supported hardware to unleashing the full potential of cutting-edge next-generation products. As a Systems Engineer on this team, you will have the opportunity to make a direct impact on the user experience for millions of customers worldwide by ensuring every device, regardless of generation, delivers the smooth, responsive experience Apple customers expect.

In this role, you will dive deep into performance issues surfaced across Apple's ecosystem and will be working with cross-functional partner teams from various apps and frameworks to decipher complex system conditions that impact performance and develop solutions to resolve them. You'll have the opportunity to drive innovative performance optimization ideas from conception to delivery, develop measurement tools and analysis frameworks, and create testing methodologies that reflect real-world usage. The ideal candidate will be someone who is self-motivated and enjoys debugging complex systems, with a natural curiosity for understanding how different components interact and impact overall performance.

Analyze and fix challenging performance problems in software for various user facing workloads in order to provide the best-in-class experience on Apple products.
Engage with other engineering teams from firmware, kernel, applications and hardware teams to gain a deep understanding of problem domains through technical discussions and strong collaboration.
Propose architectural changes, optimizations and offer solutions to end to end responsiveness issues.
Develop and use tools to profile and analyze performance issues across the software stack for user facing scenarios.
Develop and analyze telemetry to understand performance trends from the field across products and software releases.
Evaluate and optimize performance of new products and features in software for a great user experience.

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 language
Experience in Systems Engineering
Ability to collaborate across teams to drive development and performance optimizations

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

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 $150,400 and $277,600, and your base pay will depend on your skills, qualifications, experience, and location.

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.

Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant

At Apple, we believe accessibility is a fundamental human right. You’ll find that idea reflected in everything here — in our culture, our benefits and our digital tools. By welcoming as many perspectives as possible, we help you build a career where you feel like you belong.

Learn about accessibility in Apple’s workplace

Learn about reasonable accommodations for job applicants

Apple accepts applications to this posting on an ongoing basis.

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