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

Apple -
London

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Job details

Qualifications

Technical troubleshooting
Performance tuning
iOS development
iOS
Encryption
Machine learning
SDKs
Data pipeline
APIs
Design documentation
Swift

Full job description

The Private Cloud Compute (PCC) team builds Apple's privacy-preserving cloud inference platform - the system that lets generative-AI features on iPhone, iPad, Mac, and Vision Pro reach into the cloud without compromising user privacy. We are looking for a Software Engineer to join the team that builds the on-device client side of that pipeline: the system frameworks and sandboxed services that every Apple Intelligence and Foundation Models request flows through before it ever leaves the device.

This is system-level Apple platform work. You will design and ship the Swift frameworks that turn high-level inference requests into a compact wire protocol, manage long-lived connections, stream multimodal output back to client apps - all under strict process isolation and privacy guarantees. Your code will run on every device that uses Apple Intelligence - and the bar for correctness, performance, and privacy is set accordingly.

Description
You will be a key contributor to the Swift frameworks and XPC services that connect on-device apps and system daemons to PCC. Day-to-day responsibilities include:

Designing and evolving the on-device client SDKs and the XPC services they sit behind, balancing API ergonomics for client teams with the strict process-isolation and attestation guarantees required by PCC.
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 that let on-call engineers diagnose request failures across device, cloud, and inference layers without exposing user data.
Collaborating closely with the PCC server-side, Foundation Models, attestation, and platform-frameworks teams; writing design documents, leading reviews, and mentoring engineers on Apple platform fundamentals.
Profiling on real hardware with Instruments and driving down memory, latency, and energy costs in the request path - these libraries run on every device, on every inference, so every microsecond matters.

Preferred Qualifications
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.

Minimum Qualifications
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.

Apply Now

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ios developer jobs

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

Software Engineer (Linux)

Lead Software Engineer - Android

Backend engineer (Fin-tech)

Full Stack Engineer

Lead DevOps Engineer

iOS Developer

Software Developer (Entry Level)

Android Developer

Mobile Software Engineer - iOS

Backend Developer, Followscores

Backend Developer, Followscores

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