Sr Messages Infrastructure Engineer
Various Locations within San Francisco Bay Area
March 13, 2026
Apple Custom Ats
Summary
Join Apple’s Messages team as an engineer responsible for designing and ensuring the robustness of Messages core on-device architecture and sync infrastructure. Our team is dedicated to creating exceptional user experiences, as Messages is a crucial platform for secure global connections. You will focus on the foundational data structures, APIs, and persistence layers that power Messages across iOS, macOS, watchOS, and visionOS. Work on building and scaling infrastructure related to Messages in iCloud utilizing CloudKit, SQLite databases, and system daemons. You will have the opportunity to work closely with partner teams in iCloud, Telephony, IdentityServices. Come be part of the team helping our customers connect to their most important people in delightful, expressive ways.
Description
Every day, millions of people connect via Messages, expressing and sharing with the people who matter most to them in many different ways. We are constantly adding new communication tools for iMessage, all with end-to-end encryption for both individual and group conversations. We believe privacy is a fundamental human right, and you’ll incorporate this belief into everything we build.
Minimum Qualifications
Strong object-oriented development and design skills
At least 6 years of industry experience building mobile applications
The ability to adapt quickly to new technical environments and resolve sophisticated problems
A passion for modular, maintainable, testable code
Preferred Qualifications
At least 2 years of prior hands-on iOS or macOS application development
Experience with Swift and/or Objective-C preferred
Experience with databases (SQLite), sync frameworks (CloudKit), and system daemons (XPC)
Experience with system concepts including multi-threaded processing, synchronization, and interprocess communication
Experience maintaining legacy code and backwards compatibility, with a record of replacing legacy code with new things in non-disruptive ways
Specific experience defining and driving data structures, APIs, or persistence layers for communication features
