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# Senior iOS App Development Engineer - Services Special Project

- **Company:** Apple Inc.
- **Location:** Cupertino, CA, United States
- **Experience:** Expert
- **Salary:** $184,700.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Apple IOS, Apple Xcode, Databases, Daemon Tools, Data Synchronization, Software Debugging, Programming Tools, Distributed Data Store, Memory Management, Electronic Data Interchange (EDI), Fault Tolerance, Inter-Process Communication, Performance Tuning, Cloud Services, Software Engineering, SQL Databases, System Programming, Systems Integration, Multithreading, Large Language Models, Concurrency, Backend, Git, Information Technology, Api Design, Objective C++, Restful APIs
- **Published:** November 2, 2026
- **Apply:** https://www.jobmonkeyjobs.com/career/28153259/Senior-Ios-App-Development-Engineer-Services-Special-Project-California-Cupertino-7413

## About the Role

Bachelor's or Master's degree in Computer Science or a related field

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

Strong systems programming expertise, including concurrency, multithreading, memory management, and performance tuning

Understanding of systems-level concepts such as inter-process communication (XPC), process lifecycle management, and resource constraints

Experience integrating client applications with RESTful APIs and cloud services

Proficiency with development tools such as Xcode, LLDB, Instruments, and Git

Strong communication skills, including the ability to collaborate across a diversity of backgrounds and experiences

Highly organized, maintaining patience and composure to effectively operate within ambiguity

Preferred Qualifications

Experience with CloudKit or similar distributed data synchronization technologies

Experience designing and delivering libraries, frameworks, or public/internal APIs

Strong debugging skills across the OS stack - 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 developing software that interfaces with large language models

Experience with SQL and database technologies

Track record of mentoring engineers and driving technical direction within a team

## Description

Designing and implementing frameworks, daemons, and system services that form the backbone of Services experiences on Apple platforms

Building efficient inter-process communication layers using XPC to enable secure, performant data exchange between system components

Architecting and implementing CloudKit-based data synchronization to deliver seamless cross-device experiences

Designing robust interfaces to REST endpoints and backend services, ensuring reliability and graceful degradation

Building and maintaining metrics and telemetry frameworks to measure feature health, performance, and user engagement

Driving architectural decisions across the team, participating in peer review of architecture, API design, and individual software changes

Mentoring and supporting other engineers on the team, raising the bar for engineering quality and technical depth