CloudKit Client - Software Engineer

Santa Clara Valley (Cupertino), California, United States
Software and Services


Role Number:200243431
The CloudKit team works cross-functionally with other software teams to provide the best service integration on iOS, macOS, tvOS, and watchOS devices. Hundreds of millions of iPhone, iPad, Apple Watch, Apple TV, and Mac users rely on our code to sync and back up their data when they’re on the move.

Key Qualifications

  • 5+ years of software engineering experience
  • Strong programming skills in Objective-C
  • Proven track record of working on rapid development cycles and shipping software on tight schedules
  • Experience with database performance work, parallelism, event-based programming, inter-process communication
  • Passionate about building system-level frameworks and APIs
  • Excellent written and verbal communication


We work on the client-side of the iCloud services, building the CloudKit and NSUbiquitousKeyValueStore APIs and their backing daemons on all Apple platforms (iOS, macOS, watchOS, tvOS). This job entails both low level (C/Objective C, libdispatch, POSIX APIs) and system-level skills (synchronization protocols, framework design, IPCs, multi-process performance work, system-wide resource sharing.) Reliability is essential, and we’re looking for engineers with a real passion for building complex systems that will seamlessly recover in the event of errors. In this role, you will: • Work with adopters to craft clear APIs • Work with the network and file system stacks to build performant daemons • Work with our server counterparts to design scalable features and protocols • Tackle challenges around scalability, reliability, power, and performance

Education & Experience

Bachelor's degree in Computer Science or equivalent experience

Additional Requirements

  • • Swift
  • • Experience designing and building developer-facing APIs
  • • Experience building on Apple Platforms (macOS, iOS, watchOS, tvOS, etc.)