On-Device Cloud Inference SDK Engineer (Swift)

Apple, Inc.; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

Apple, Inc. in London, England seeks a Software Engineer to join the Private Cloud Compute team. You will design the on-device client SDKs and the XPC services, ensuring privacy-preserving and efficient inference pipelines that run across iPhone, iPad, Mac, and Vision Pro.

You will implement high-throughput, low-latency request paths, manage concurrency, and build telemetry to diagnose failures without exposing user data. Strong Swift, Concurrency, and IPC experience are essential for success.

Qualifications

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

Responsibilities

• Designing and evolving the on-device client SDKs and the XPC services they sit behind.
• Implementing high-throughput, low-latency request paths: protobuf serialization, payload compression, multi-turn session state, retry/cancellation, streaming output.
• Owning concurrency and resource management across async/await, AsyncStream, and GCD.
• Building telemetry, signposts, and privacy-audited logging for failures across device, cloud, and inference layers.
• Collaborating with PCC server-side, Foundation Models, attestation, and platform-frameworks teams; writing design documents and leading reviews.

Skills

Swift

Swift Concurrency

GCD

Obj-C / C++

Async networking

Tools

Protocol Buffers

XPC

Instruments

Telemetry logging

Job description

Apple, Inc. in London, England seeks a Software Engineer to join the Private Cloud Compute team. You will design the on-device client SDKs and the XPC services, ensuring privacy-preserving and efficient inference pipelines that run across iPhone, iPad, Mac, and Vision Pro.

You will implement high-throughput, low-latency request paths, manage concurrency, and build telemetry to diagnose failures without exposing user data. Strong Swift, Concurrency, and IPC experience are essential for success.