AI/ML - Senior OS Software Engineer, Evaluation

Apple

Apple

Software Engineering, Data Science

Cupertino, CA, USA

USD 181,100-318,400 / year + Equity

Posted on Apr 16, 2026
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For the engineer that obsesses on how software can enable OS developers to evaluate and improve their features, there is no better place than Apple’s Experimentation team. The Experimentation team builds an end-to-end platform spanning the OS, data, and server for all the Apple OSes, operating at a scale of 2.5+ billion devices. We are addressing key challenges to accelerate the adoption of AI and an experimentation culture mindset across all Apple products/services. We are seeking seasoned engineers that can push the boundaries of low-level operating system technologies while maintaining a customer-centric focus on the developer and user experience.
The mission of Evaluation is to measure, understand, and proactively improve all Apple features. We are looking for an experienced engineer to build and extend the experimentation system for Apple to use across all our operating systems. You will be responsible for the on-device daemon and framework, that is at the heart of the experimentation platform. You will partner with feature teams across Apple to enable them to make a positive impact for the customers. You will ship code that runs on devices you use every day and powers a variety of Apple products. You will obsess over memory, power, performance in addition to the developer experience. Your technical leadership will drive critical design discussions, elevate peers through code reviews, and push the boundaries across the operating system.
  • Design and implement new features and APIs for the on-device Experimentation service that is deployed across multiple Apple operating systems
  • Develop and maintain high-performance libraries that are easy to use by developers
  • Participate in all phases of software development cycle: from problem definition and design, through implementation, testing, and debugging
  • Diagnose and resolve issues across different layers of the software stack
  • Write unit and integration tests for new and existing code
  • Work with cross-functional teams to enable developer and product features
  • An appreciation how an OS design impacts end-user experience
  • BS in Computer Science, or a related field with 7 years of work experience; or a MS in Computer Science, or related field with 5 years work experience
  • Industry experience in Objective-C, Swift, C/C++, Kotlin, or similar languages
  • System design and architecture skills
  • Strong understanding of operating system fundamentals such as threading, synchronization primitives, inter-process communication, and scheduling
  • Excellent collaborative skills, with the ability to work with a team to design system architecture
  • Proven ability to deliver Operating Systems production grade software
  • Skilled at programming interface design
  • Experience in iOS, macOS, or similar operating systems
  • An appreciation of how a platform design impacts end-user experience
  • Experience in experimentation or A/B testing and AI
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 $181,100 and $318,400, 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.

Apple accepts applications to this posting on an ongoing basis.

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