Swift On-Device Frameworks Engineer — Private Cloud Compute

Omaze; Greater London; On-site; GBP 100,000 - 160,000; Full time

Job summary

Apple seeks a Software Engineer to join the Private Cloud Compute (PCC) team. You will design and ship Swift frameworks that turn high-level inference requests into a compact wire protocol, manage long-lived connections, and stream multimodal output back to client apps with strict process isolation and privacy guarantees.

This role focuses on system-level Apple platform work, including building on-device client SDKs, XPC services, and performance profiling to minimize memory, latency, and energy

Qualifications

• Experience developing complex, system-level frameworks, daemons, or background services for iOS and macOS.
• 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.

Responsibilities

• Designing and evolving the on-device client SDKs and the XPC services they sit behind, balancing API ergonomics for client teams with strict process isolation and attestation guarantees.
• Implementing high-throughput, low-latency request paths: protobuf serialization of inference payloads, payload compression, multi-turn session state and lifecycle, retry/cancellation semantics, and streaming of incremental model output back to clients.
• Owning concurrency and resource management across async/await, AsyncStream, and GCD - including correct cancellation, back-pressure, and lifetime management of long-lived XPC connections.
• Building the telemetry, signposts, and privacy-audited logging for diagnosing failures across device, cloud, and inference layers without exposing user data.
• Collaborating with PCC server-side, Foundation Models, attestation, and platform-frameworks teams; writing design docs, leading reviews, and mentoring engineers.
• Profiling on real hardware with Instruments and driving down memory, latency, and energy costs in the request path.

Skills

Swift

Objective-C

C/C++

Concurrency

Networking

Tools

XPC

Protobuf

Instruments

GCD

Job description

Apple seeks a Software Engineer to join the Private Cloud Compute (PCC) team. You will design and ship Swift frameworks that turn high-level inference requests into a compact wire protocol, manage long-lived connections, and stream multimodal output back to client apps with strict process isolation and privacy guarantees.

This role focuses on system-level Apple platform work, including building on-device client SDKs, XPC services, and performance profiling to minimize memory, latency, and energy