Software Engineer - Private Cloud Compute, On-Device Client Frameworks

Requirements

• Experience developing complex, system-level frameworks, daemons, or background services for iOS and macOS (beyond standard UI-focused app development).
• Strong programming proficiency in Swift, alongside experience with Objective-C or C/C++ for lower-level system integration.
• Deep understanding of concurrency (Swift Concurrency, GCD), memory management, and asynchronous network programming.

Nice to Haves

• Experience designing or evolving wire protocols (e.g., Protocol Buffers), data-streaming pipelines, or connection management.
• Hands-on experience with Apple's Inter-Process Communication (XPC) to bridge sandboxed applications and system services.
• Familiarity with secure communication protocols, cryptography, or privacy-preserving architectures.
• Working knowledge of ML concepts and frameworks and proficiency in performance profiling with Instruments, and experience implementing robust client-side telemetry and logging using native Apple APIs.
• Familiarity with end-to-end systems that span device, network, and server tiers, and comfort reasoning about failure modes across that boundary.

What You'll Be Doing

• Designing and evolving the on-device client SDKs and the XPC services they sit behind.
• Implementing high-throughput, low-latency request paths.
• Owning concurrency and resource management across async/await, AsyncStream, and GCD.
• Building telemetry, signposts, and privacy-audited logging.
• Collaborating closely with other teams, writing design documents, leading reviews, and mentoring engineers.
• Profiling on real hardware with Instruments and optimizing performance in the request path.

Perks and Benefits

• Opportunity to work on privacy-preserving cloud inference platform for Apple products.
• Be part of a team setting high standards for correctness, performance, and privacy.
• Collaborate with various teams within Apple on system-level platform work.
• Work on libraries that run on every device, making every microsecond count.