Software OS Developer Engineer

Cupertino, California, United States Software and Services

How do we get the right diagnostic data to improve the quality of Apple products and software? This is the most important question that the Stability Engineering OS Team strives to answer each day. We are looking for an exceptional senior engineer to architect and build our OS diagnostic collection services. You will own critical components of our diagnostic infrastructure and work with engineers across Apple to develop and enhance operating system code that supports our mission.

We write code for all Apple platforms (iOS, tvOS, watchOS, visionOS, and macOS). Your code will ship on millions of devices used worldwide, directly impacting the quality and reliability of Apple products.

As a senior member of the team, you will take ownership of critical diagnostic infrastructure components and drive technical decisions that shape our data collection strategy. You'll architect solutions that perform efficiently within the constraints of all Apple platforms, with privacy and user trust always at the forefront. You will mentor other engineers, lead technical design reviews, and collaborate closely with teams across Apple to ensure our diagnostic systems provide the insights needed to continuously improve product quality.

Your work will directly influence how Apple identifies, diagnoses, and resolves issues affecting millions of users worldwide.

• BS in Computer Science or equivalent work experience
• 2-5+ years of experience writing sophisticated, performant code in C, Objective-C, or Swift with proven ability to test, debug, and productize at scale
• Strong object-oriented and systems software design skills with experience architecting large-scale systems or services
• Deep expertise in systems programming with meaningful development experience on iOS, macOS, or POSIX-compliant systems
• Proven software engineering skills including version control, code review, unit testing, and CI/CD practices
• Excellent debugging skills with hands‑on experience using debugging and tracing tools (LLDB, DTrace, Instruments, etc.)
• Understanding of privacy‑preserving data collection techniques and security best practices.
• Experience with performance optimization under constrained environments (memory, CPU, battery, network)
• Demonstrated ability to mentor junior engineers and provide technical leadership.
• Strong cross‑functional collaboration skills working with QA, Product, Security, and other engineering teams
• Excellent written and verbal communication skills with ability to articulate complex technical concepts

• Experience with embedded systems or resource‑constrained environments
• Mobile platform development (iOS, watchOS, or similar)
• Experience with telemetry, analytics, or observability systems
• Crash analysis and symbolication experience
• Contributions to open‑source projects
• Familiarity with differential privacy or other privacy‑enhancing technologies
• Experience and interest in using LLM technologies and their integration, understanding how to leverage AI capabilities to enhance code quality, automate development tasks, and improve software solutions.

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…