OS Software Engineer, Evaluation

Apple Inc.; Cupertino (CA); On-site; USD 129,000 - 225,000; Full time

Benefits offered by this job

Relocation

Stock programs

Educational expense reimbursement

Discretionary bonuses

Job summary

Apple Inc. is seeking an engineer for the on-device Experimentation service to empower OS developers and measure impact across devices.

You will design features, write high-performance libraries, and collaborate with cross-functional teams while focusing on memory, power, and user experience across iOS, macOS, and related platforms.

The role requires strong OS fundamentals and low-level programming with an emphasis on developer experience and end-user impact.

Qualifications

• Strong foundation in operating systems concepts including concurrency and memory management.
• Hands-on experience with low-level or systems software through internships, coursework, or open-source projects.
• Excellent problem-solving, debugging, and communication skills with teamwork experience.
• Bachelor’s degree or equivalent practical experience.

Responsibilities

• Design and implement features and APIs for the on-device Experimentation service deployed across Apple OSes.
• Develop and maintain high-performance libraries that are easy to use by developers.
• Participate in all phases of the software development cycle from design to testing and debugging.
• Diagnose and resolve issues across different layers of the software stack and write tests.
• Collaborate with cross-functional teams to enable developer and product features.

Skills

Objective-C

Swift

C/C++

Kotlin

Concurrency

Education

Bachelor’s degree in Computer Science, Computer Engineering, or a related technical discipline

Master’s degree in Computer Science or Computer Engineering

Job description

Cupertino, California, United States Software and Services

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 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 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.

Description

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

Responsibilities

• 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

Minimum Qualifications

• Working proficiency in Objective-C, Swift, C/C++, Kotlin, or similar languages
• Strong academic foundation in operating systems concepts, including concurrency, multi-threading, synchronization primitives (mutexes, locks, semaphores), inter-process communication (IPC), and memory management.
• Hands-on experience developing low-level or systems software through internships, academic capstones, coursework labs, or substantial open-source/personal projects (e.g., building a shell, multi-threaded server, user-space service, or operating system project).
• Excellent problem-solving, debugging, and communication skills, with a track record of collaborating effectively in team or group-project settings.
• Bachelor’s degree in Computer Science, Computer Engineering, or a related technical discipline (or equivalent practical experience).

Preferred Qualifications

• Prior software engineering internship experience in systems software, embedded platforms, or platform engineering.
• Exposure to Unix/POSIX APIs, event loops/run loops (libdispatch/GCD, kqueue, epoll), or system daemons/services (launchd, systemd).
• 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
• Master's degree in Computer Science, Computer Engineering, or a related technical discipline (or equivalent practical experience).

Compensation

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 $129,300 and $225,300, 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.

Benefits

• Comprehensive medical and dental coverage
• Retirement benefits
• A range of discounted products and free services
• Reimbursement for certain educational expenses — including tuition
• Discretionary bonuses or commission payments
• Relocation

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.