Senior iOS App Development Engineer - Services Special Project

Apple • Cupertino, CA

7d

About The Position

Apple’s Services team is seeking a senior iOS frameworks engineer to design and build foundational on-device systems that power Generative AI experiences across Apple’s services ecosystem. The role owns critical on-device framework and daemon components, focusing on platform-level systems and infrastructure beneath the UI layer.

The engineer will build frameworks, daemons, and system services; implement secure and performant XPC communication; architect CloudKit-based synchronization; integrate REST endpoints and backend services; and develop metrics and telemetry infrastructure. The role also contributes to architectural decisions, reviews architecture and software changes, and mentors engineers while promoting strong engineering quality and technical depth.

Requirements

• Bachelor’s or master’s degree in Computer Science or a related field.
• At least 6 years of software engineering experience on client-side or platform-level iOS systems.
• Strong proficiency in Swift and Objective-C, with experience shipping production-quality frameworks, daemons, or system APIs.
• Systems programming expertise, including concurrency, multithreading, memory management, and performance tuning.
• Understanding of systems-level concepts such as XPC, process lifecycle management, and resource constraints.
• Experience integrating client applications with RESTful APIs and cloud services.
• Proficiency with Xcode, LLDB, Instruments, and Git.
• Strong communication skills and ability to collaborate across diverse backgrounds and experiences.
• Highly organized, patient, and composed when operating within ambiguity.

Nice To Haves

• Experience with CloudKit or similar distributed data synchronization technologies.
• Experience designing and delivering libraries, frameworks, or public or internal APIs.
• Strong debugging skills across the OS stack, including frameworks, daemons, and supporting services.
• Experience optimizing software for performance, energy efficiency, and resource constraints on mobile platforms.
• Familiarity with metrics and telemetry frameworks, including instrumentation, data collection pipelines, and analytics.
• Experience with AI/ML principles or software interfacing with large language models.
• Experience with SQL and database technologies.
• Track record of mentoring engineers and driving technical direction within a team.

Responsibilities

• Design and implement frameworks, daemons, and system services for Apple Services experiences.
• Build efficient, secure inter-process communication layers using XPC.
• Architect and implement CloudKit-based data synchronization for cross-device experiences.
• Design reliable interfaces to REST endpoints and backend services, including graceful degradation.
• Build and maintain metrics and telemetry frameworks to measure feature health, performance, and user engagement.
• Drive architectural decisions and participate in reviews of architecture, API design, and software changes.
• Mentor and support other engineers, promoting engineering quality and technical depth.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior