The iCloud Mail, Calendar & Contacts Client Engineering team is dedicated to crafting exceptional products and user experiences for iCloud Mail across iOS, macOS, and the Web as well as responsible for developing system level client frameworks. This is an opportunity to join a team with a goal of providing new features and functionality to iCloud customers by integrating together the client-device and cloud domains as well as provide an avenue for exploratory work as needed. Your work will involve everything from building simple-to-use User Interfaces and experiences to Client frameworks with performance and power efficiency in mind. You love collaborating within the team and equally meaningfully, with cross-functional engineering teams. In addition to crafting efficient, testable, easy-to-maintain code, you recognize the importance of writing functional specifications and design documents.